Cure It GRP User manual

Installation Guide
Installation, handling, storage
and technical information

• 20 year materials guarantee from the manufacturer
• 20 year workmanship guarantee from the installer
• Optional 10 year insurance-backed guarantee available
• Fire retardant (to BS476-3:2004)
•Provenpedigreeasawaterproongmaterialwiththepotential
to last for the lifetime of the building
• Made from specially formulated resins and topcoats designed
 forroongapplications
• Superb appearance - available in a range of colours
•Threenishoptionsincludingnon-slip
• Can be used for almost any application regardless of size
or complexity
• Straightforward to install
•Goodenvironmentalprole
• High security - cannot be cut with a knife
• Cold applied - free of the risks associated with ‘hot works’
• Maintenance free
• No seams, joints or welds
• Easy to repair in the unlikely event it is damaged
• Completely UV resistant
• Can be used toconvertanexistingatroofforuseasa
balcony or roof garden
• Can be used to permanently contain water for applications
such as ponds or pools
•Willwithstandfoottrafcasstandard
• Canbespeciedtowithstandheavy,frequentfoottrafcfor
walkways/balconies
• Canbeusedforalmostanyapplication,including:atroofs,
industrial applications, pitched roofs, walkways, balconies,
green roofs, steps or complex gulleys/gutters
Summary of features
www.cureit.com
March 2017
FS 616789
ISO 9001:2008

Cure It Data Sheet 4
Key Steps to The Perfect Cure It Roof 5
Component Parts of a Cure It Roof 6
Tools and Materials 7
Stages of Installing a Cure It Roof 8
Stage 1 - Laying the Deck 9
Stage 2 - GRP Edge Trims 10-13
Stage 3 - Laminating 13-15
Stage 4 - Topcoating and Finishing 16
Hardener Addition 17
Material Quantity Estimation 18
General Advice 19
Troubleshooting 20-23
WarmRoofPart‘L’SpecicationGuidance 24
GRP Trims 26
CONTENTS PAGE
Contents
Training is recommended before using the Cure It system

4
General information
Cure It Data sheet
Product description
ACureItGRProofisasingle-plyGRPlaminateconsistingofCureItRoongResinandReinforcementMatappliedinsituoveragoodquality
OSB3deck.Theroofisnishedwithpre-formedGRPedgetrimsandacoatofpre-pigmentedCureItTopcoat.
Material features
-Materialsarespeciallyformulatedforroongapplications
- 20 year guarantee on materials
- Fast ‘wet-out’
- Low styrene emission
-Highexibility
- Adjusted for seasonal variations in temperature
- Good topcoat bonding characteristics
- Includes technical support
- Full training and on-site support available
- Supplied pre-pigmented Graphite Grey (BS 00 A 13)
- Range of colours available
- Fire retardant to BS476-3:2004 (no restrictions on usage)
-Suitableforfoottrafcapplicationswith600g/m²ReinforcementMat
Longevity
TheCureItroongsystemmaterials(CureItRoongResin,CureItRoongTopcoat,RoongEdgeTrims,Hardener,ReinforcementMat)will
remainwithinthespecicationoftheCureItMaterialSafetyDataSheetwhenstoredcorrectlyandwillformastructuralwaterproofmembrane
thatwillremainwatertightforaperiodof20yearsfromthedateofmanufacturewheninstalledasspeciedintheconditionssetoutinthe
Cure It guarantee.
Properties in relation to re
AatroongsystemcomprisingofaCureItGRPlaminatewithCureItTopcoatwhentestedtoBS476-3:2004wasdesignatedEXT.F.AB
(nolimitationsonuse).F.AAratingisavailablewiththeexposedaggregatenish.
Resistance to wind uplift
TheCureItGRProongsystemisfully-bondedtotheroofsubstrate.Thesystemwillberesistanttoanywindupliftthatcouldreasonablybe
expected during the product’s lifespan.
Areas of usage
TheCureItwaterproongsystemcanbeusedforwaterproongapplicationsofalmostanysizeorcomplexity.
Warm roof specication
TheCureItsystemcanbespeciedtocomplywithcurrentpart‘L’regulations.(seepage24)
Resistance to foot trafc
In standard 450g/m2specicationtheCureItsystemwillberesistanttoanyleveloffoottrafcthatitcouldreasonablybesubjectedtoduring
its lifespan. 600g/m2specicationisavailableforapplicationssubjecttoheavyfoottrafcsuchaswalkways/balconies.
Finish options
TheCureItwaterproongsystemissuppliedtoBS480000A13GraphiteGrey.Therearetwonon-slipoptionsavailable:exposedaggregate
(granulated non-slip slate coating applied at 0.75kg/m2)andcoatedaggregatenish(granulatednon-slipslatecoatingappliedat0.15kg/m2).
Standard Specication
OSB3 18mm T & G
CureItRoongResin@1.5kg/m2
Cure It approved Reinforcement Mat
CureItRoongTopcoat@0.4kg/m2
Cure It Hardener (1-4%)
Cure It GRP edge trims
Trim adhesive applied around the perimeter
Applied as per the Cure It Installation Manual

5
General information
Key steps to the perfect roof
Installing your rst roof
Training is always recommended before installing a Cure It GRP roof. Training is available either on-site with a trained and experienced installer
or can be arranged with your distributor. Please contact Cure It technical on 03301 222666 to book onto a training course or contact your
distributor for further details.
Key steps to the perfect roof
After reading this manual please refer to this page. Always remember the following key rules when installing a Cure It GRP roof. These are
areas where mistakes are most commonly made:
Decking
• When using OSB3 18mm T & G boards always lay the boards with the tongue and groove gap face up (usually writing face up).
• Always stagger the joints.
• Do not use sections of boards less than 400mm.
• Leavea25mmexpansiongapagainstanywalls(thiswillbecoveredbythellettrim/ashing).
• Non T & G boards need to have joints gapped as per the manufacturers instructions then taped (with masking tape)
and bandaged (laminate bandage across the joints).
• For all decking use ring shank nails or screws (nailgun recommended) to penetrate 40mm into the joist at 200mm centres on each joist.
GRP Edge Trims
• WhenxingtheGRPedgetrimsalwaysusetrimadhesivetobondthetrimsaroundtheperimeter.Withouttrimadhesive,thetrims
 willpullupontotheroofandaredifculttox.
• GRP edge trims should be used around the entire perimeter of the roof.
• Useanexpansionjoint(E280trim)iftheroofisover100m².
Applying the Cure it Resin/Reinforcement Mat
• Bandage all joints between trim sections and between trim and decking.
• DonotuseCureItroongmaterialsinwetordampconditionsorapplyontoanydampormoistareas.TheyWILLfail.
• Never apply Cure It directly onto brickwork.
• When dealing with a complicated detail that isn’t covered in this guide call the Cure It technical support team (details on back cover).
• When the Cure It Resin and the Reinforcement Mat have been applied, lightly sand the entire area with 40 grit sandpaper before topcoating.
• Alwayshavealargevisqueensheetonsite.IntheeventofrainSTOPandcovertheroofwiththesheet.
• Always stir the resin and topcoat thoroughly in the can before use.
• HardenerisrequiredforboththeResinandTopcoat.
• Always measure the hardener from a safety dispenser. Use suitable protective goggles and gloves when handling the hardener.
• BeforelayingtheReinforcementMat,ensurethattheareahasbeencoatedwithCureItRoongResin.
Do not lay Reinforcement Mat onto a dry deck.
• The laminate should become transparent when consolidated with the paddle roller. Apply more resin if the reinforcement
mat is too dry (still white).
Topcoating/nishing
• Don’t forget to add hardener to the topcoat.
• Apply the topcoat within a day of the laminate.
• Wipe the surface with acetone if it has been left over night.
• Lightly sand the area and acetone wipe if it has been a couple of days.
• Follow the re-topcoating notes on this guide if the roof has been left any longer.
• Donotapplyresinortopcoatontosurfacesabove35C.

6
This diagram shows a breakdown of a typical
CureItroonginstallationanditscomponentparts:
1
10
3
4
5
6
7
8
9
11
2
General information
Component Parts of Cure It Roof
1 B260 Raised edge trim
2 D260 Fillet trim
3 C100Simulatedleadashing
4 A200 Drip edge trim
5 C1 universal external corner
6 2400mmX600mmX18mmOSB3TongueandGroovedecking
7 CureItlaminatecomprisingofroongresinandroongmat
8 CureItRoongTopcoat
9 AT 195 External Angle Trim
10 D260 Fillet Trim
11 F300 Flat Flashing
1 C100Simulatedleadashing.
2 The edge of this roof was masked off before the aggregate
 nishwasapplied.
3 C1 preformed universal external corner.
4 C4 Preformed universal internal corner.
5 A200 drip trim - Laid to facilitate water running off the roof.
6 A slight fall is engineered into the substrate to avoid
standing water.
7 B260 Raised edge trim.
8 D260 - laminated into the substrate, remains unattached
 behindtheC100ashing.
MostCureItroonginstallationsareforsimpledomesticatroofsliketheoneshownbelow.Roofsliketheseincorporatethefourmost
commonlyusedtrims:A200,B260,C100&D260.Theroofshownbelowhasbeennishedinapigmentedgreentopcoatwithanexposed
aggregatenish.
2
4
5
6
8
3
7
1

7
General information
Tools and Materials
Other tools
• Strong shovel
• Wrecking bar
• Claw hammer
• Circular saw/jig saw
• Mastic gun
• 5” Grinder + stone blade for cutting trims
• Cure It Extension Pole
• Cure It Sanding Head
• 40 Grit aluminium oxide paper
• Soft and stiff sweeping brushes
• Visqueengroundsheet(incaseofrain)
• Nail gun
Other materials
• 19mm x 38mm treated tile batten
• OSB3 decking board (2400x600x18mm T&G)
• 63mm paslode nails (all nails should be galvanised and at least 60mm
long and should be ringshank nails, screw or better)
• 13mmgalvfeltnails(forxingtrims)
• Leadsealant(forsealingashingsintowallonly)
• Decorators wipes
• Rubbish bags
• Slate granules
Personal protection equipment
• Eyewash station
• Protective goggles
• Disposable gloves
• Suitable footwear
• Resin resistant overalls
• P3 Dust Mask
• Carbonltermask(optional)
Cure It roong materials
• CureItRoongResin
• Cure It Topcoat This is available in Graphite Grey as standard (BS 00 A 13) or a selection of
pre-pigmented colours
• GRP Edge trims
• Cure It Reinforcement Mat This is available in 2 weights: 450g/m2for most roofs and 600 g/m2for applications
where the roof will be subjected to heavy foot traffic (i.e. a walkway or balcony.)
• Bandage
• Cure It Hardener Hardener can be supplied in different strengths to compensate for seasonal
variations in temperature
• Acetone
• Trim Adhesive
• FinishingTissue Thisisusedtoachieveahighqualitynishondetailedareas
Roong tools
• Cure It mixing bucket For easy measurement of materials and hardener addition
• Brushes Required for detail work
• 70mm + 140mm rollers These can be extended with a Cure It extension pole
• Consolidating rollers/paddle roller These can be extended with a Cure It extension pole
• Hardener safety dispenser This is an essential tool for safe hardener addition

8
General information
Stages of installing a Cure It roof
The installation of a Cure It roof can be divided
into 4 stages:
Preparing and decking the roof
(page 9)
The old roof covering is removed and the roof
is re-decked with OSB3 18mm tongue and
groove boards.
Fixing the edge trims
(page 10-13)
GRPedgetrimsarexedtotheperimeterofthe
roof and can be used to adapt the Cure It laminate
to almost any application.
Laminating
(pages 13-15)
Joints between decking, gutters, GRP trims and
protrusions e.g. pipes are bandaged at this point.
The entire roof is then laminated with a layer of GRP.
Topcoating and nishing
(page 16)
The roof is then topcoated, with the client’s
specicationofcolourandnish.

9
Stage 1
Laying the deck
Preparing the deck
When laying decking, it is important to remember that the decking board will absorb moisture if in contact with water. Any moisture trapped
within the roof will cause board movement, delamination and possibly failure. Ensure that conditions are dry before decking the roof. After
removingtheolddecking,checkthatallroongjoistsaresoundandfreefromrot.Replacetheseasrequired.Any'play'inthejoistsshouldbe
addressed at this stage. Re-bed loose joists or use noggins to ensure the joists are all stable. This is important to prevent issues with noise in
thenishedroof.Ensurealljoistspansarelessthan600mm.Ifpossible,buildafallintothesubstratesothattheroofcandraincompletelyand
remain free from standing water.
Laying the deck
18mm OSB3 tongue and groove boards are laid at 90° to the roof joists. The boards must be laid with the gap side of the tongue and groove
joinuppermost.Notonlydoesthisgiveabetterkeyforthelaminate,italsoallowstheresintoowintotheboardjointtoeffectivelygluethe
boards together.
Start to lay the boards at the furthest edge from the drip. If the board is laid along a wall, an expansion gap of 25mm should be left. Align the
endoftheboardwiththefascia,layingtheboardsfromendtoend.Trimthelastboardintherowushwiththefascia.Usingtheoff-cut(if
greaterthan400mm,)starttolaythenextrowofboardsbyttingthetonguermlyintothegrooveoftherowalreadylaid.Ensureeachrunof
decking is staggered with at least a 400mm off-set between the joints in each row.
When two rows have been laid the boards can be aligned to run straight. Fix the boards to the joists using a ring shank nail or screw with
40mm joist penetration at 200mm centres. Continue to lay each row in turn using the off-cut from one row to start the next row. The last row
is simply cut off in line with the fascia.
Fixing the deck to different substrates
Timber
WhenxingtheOSB3boardtotimberjoists,thepreferredmethodiswithanailgun.Thisisthemostefcientwayofxingthedecking;it
alsominimisesdamagetotheceilingbelow.A63mm(orlongerforawarmroof)galvanisedringshanknailshouldbexedat200mmcentres,
whichequatesto4nailsacrossa600mmboard.ThenailsMUSTbedrivenintoajoist.Someinstallersmaywishtousescrewguns.Thisis
acceptable providing the screws have a minimum of 40mm penetration into the joist. The boards can also be nailed using a hammer. This is
obviously time consuming and WILL lead to internal damage of the ceiling. All nails must be non-rusting (galvanised or sheradised).
Steel
Fixing to steel is easily achieved with the use of self-drilling/self-tapping screws of the appropriate length.
Firringsxedtoaatrooftoaidrun-off
25mm spacing between
walls and boards
200mm
Board laid at
90° to joists. Ringshank nails or
screws with 40mm
joist penetration.
63mm galvanised
ringshank shown
Alignthersttworowsofboardsbeforexing.
Theremainingboardscanbexedrowbyrow
Joists should
bewellxed
and sound
18mm 2400mm x 600mm
OSB3 boards recommended.
Laid with the gap between the
tongue and groove face up
Off cut must be
400mm minimum
IT IS ESSENTIAL THAT THE DECK IS LAID CORRECTLY
FOR A WARM ROOF CONFIGURATION REFER TO THE GUIDANCE ON PAGE 24

10
Stage 2
GRP edge trims
ThefollowingpagesincludeinstructionsforxingthemostcommontypesofGRPedgetrims.Foracomprehensivelistoftrimapplicationssee
the trim application pages of this manual. All trims are supplied in 3m lengths as standard with the exception of F300. Heavy duty trims are
available by special order.
EdgetrimsaremanufacturedinGRP.Onesidehasahighadhesionnish(mattnish),theothersidehasaglossynish,alwaysbondtothe
mattnish.
Alltrimsmustbexedwithnailsorstaplestothedeckingboard.
WiththeexceptionoftheF300FlatashingandtheD260Anglellet,thetrimsmustbebondedinplaceusingthetrimadhesive.Silicone
sealantorgeneral-purposemasticsarenotsuitableadhesivesforthexingoftrims.
Cure It Trim Adhesive
CureItTrimAdhesiveisappliedwithaskeletonguntothebattensaroundtheperimeteroftheroof.Acontinuousbeadissufcienttoholdthe
trims in place. The trims should be ‘rubbed’ into place to ensure good bonding.
Joining Trims
Trims are either nailed to the decking boards using a 13mm galvanised clout nail or stapled in place with a gas powered or compressed air
stapler.Holdthetriminplaceensuringthefaceisvertical.Drivexingsinateachend,thenthemiddleandthenat100mmcentresthereafter.
Most common trim types and application instructions:
A170/A200/A250 - Drip Trim
TheAtypetrimisadriptrim,ttedtothelowestedgeoftheroofusuallywheretherainwater
owsintothegutter.Twosupportbattensshouldbexedtotheperimeteroftheroofto
providespacefortheguttertotbehindthetrim,withtheouterbattenattached10mmlower
thantheinnerbattentoallowthetrimtositushwiththeroof.Applyadhesivetothebatten
in a continuous strip then rub the trim into place and nail to the decking. Do not nail through
the front of the trim. If the pitch of the roof is only minimal, rainwater is likely to hold behind
the trim. A planing machine can be used to take 2mm off the deck to allow the trim to lay
ushwiththeboard.
TRIM DETAILS: A170: This is designed for applications where it is not possible to use the
larger A200. A200: This is the standard size drip trim. A250: This drip trim is ideally suited for
use on warm roofs.
Decking GRP Layer and bandage
Support batten
Brick
Fascia
Gutter
A170
Trim adhesive
A170/200/250 Application diagrams:
NOTE: If the fall of the roof is only slight, the end of the
decking board should be planed by 2mm before the battens
areattached,toallowthetrimtositushwiththerestof
the roof.

11
Stage 2
GRP edge trims
B230/B260/B300 - Raised Edge Trim
Asinglebattenisxedlevelwiththetopedgeofthedeck.ApplytheCureItTrimAdhesiveina
continuous strip along the batten, then rub the trim into place and nail through the top of the trim
into the decking. Do not nail through the front of the trim. If a ladder is likely to be leant against a
B type trim for regular access to the roof, the trim will need to be reinforced to avoid deformation.
The trim can either be doubled up by slotting a section of extra trim within the section where the
ladder will be used or it can be reinforced with an extra layer of Cure it laminate and then tissue to
maintainasmoothnish.Alternately,awoodenbattencanbeshapedandttedintotheridgeof
the trim to ensure that it remains rigid.
TRIM DETAILS:B230:Thesmallestsizeofraisededgetrimttedtotheedgesoftheroofto
containanddirecttheowofwater.B260:Thestandardsizeraisededgetrim.B300:Largerraised
edge trim for use on warm roofs.
C100/C100MT/C100L/C100LMT/C150/C150MT/C150L- Simulated Lead Flashing
TheCtrimisusuallyttedintoabedjointofthebrickworkora35/50mm(dependingonthe
trimtype)deepchasecutoutwithananglegrinderttedwithamortarchasedisc.Applythe
Cure It Trim Adhesive in a continuous strip to the back of the C trim. Fit the trim into the slot
andpressrmlybacktothewalltooverlaptheDtrim.Applyaleadsealantalongthelength
of the trim into the slot to seal the trim in. Do not topcoat.
TRIMDETAILS:C100:Standardsimulatedleadashingwith100mmverticalfaceand35mm
wall penetration. C100MT: As C100 with self securing moisture trap. C100L (Long leg): As
C100 with 50mm wall penetration. C100LMT (Long leg with Moisture Trap): As C100 with
50mmwallpenetrationandselfsecuringmoisturetrap.C150:Simulatedleadashingwith
150mm vertical face and 35mm wall penetration. C150MT (Moisture Trap): As C150 with an
integral, self-securing moisture trap. C150L (Long leg): As C150 with 50mm wall penetration.
Cross-section showing 35mm chase
cut into brickwork with angle grinder.
TheC100MTisttedwithCureItTrimAdhesiveappliedtothe
back of the trim and is sealed into place with lead sealant.
Decking GRP Layer and bandage
Support batten
Brick
Brick
Fascia
B260
Trim adhesive
OSB 3 deck
GRP laminate
Slate batten
Joist
Bandage
Trim adhesive
Channel
Finish chase with lead sealant
C100MT
GRP Layer and bandage
Decking25mm Gap
D260
C100/C100MT/C100L/C100LMT/C150/C150L/C150MT/ Application diagrams
B230/260/300 Application diagrams
Bond with trim adhesive

12
Stage 2
GRP edge trims
D260/D300 - Fillet Trim
TheDtrimisallettrimforuseagainstabuttingwalls.Itwillalsoprovideexpansionand
perimeter ventilation and is compatible with C2 left and right and C3 internal and external
corners. Place the D trim against the vertical face and push down diagonally into the corner
untilthetrimtssnugly.WheretheDtrimneedstobejoineditshouldbeoverlappedand
bonded with adhesive and bandaged together.
TRIM DETAILS:D260:Anglellettrimwith135and70mmtrimanges.D300:Anglellet
trimwith175mmand70mmanges.
F150/F300/600/900 - Flat Sheeting
TheFtrimisaatashing,whichcanbeusedasalayboardattheintersectionofapitched
roofandatroofoftenfoundondormersandtofabricateguttersinsitu.TheFtrimshould
not be laminated over completely as it may crack. It is nailed or stapled to the deck and bent
up the roof slope. In this situation, the F trim also acts as an expansion facility and must only
bexedtothedeckalongthebottomedge.TherearemanyotherapplicationsfortheFtrim
including vertical details where laminating would be time consuming, under the feet of air
conditioningunitstoenablere-roongwithoutdisconnectinganduseonsomeparapetwall
details etc. The trim should be nailed to the deck around its edges and bandaged over any
joins or nail penetrations. Any unlaminated trim can be topcoated with the rest of the roof.
Laminate onto the mat side only.
TRIM DETAILS: F150/F300/600/900: Flat sheeting supplied in 150, 300, 600 and 900mm
widths in 20M rolls. F300 Also available in 3M + 10M rolls.
D260/D300 Application Diagrams
F300/600/900 Application diagrams
Brick
35mm Channel
C100MT
GRP Layer and bandage
Decking
25mm Gap
D260
Decking
Laminate and bandage
F300 laid well
under roof felt
Roof felt
Final coarse of tiles
Joists
Laminate is laid over
the edge of the F300
Therstrunoftilesis
replaced over the F300
Sarking felt
overlaps
the F300
25mm gap to allow for
expansion of the decking.
The D trim is pushed right up
tothewallbeforebeingxed
to the deck and not the wall.
The D trim remains
unattached behind
the C100.
Bond with trim adhesive

13
Stage 2/3
Edge trims/laminating
AT195 Internal and External
The AT195 Internal and External trims are used wherever the laminate needs to cover an area
which needs to continue at another laminated surface. The AT195 Ext is supplied with a high-
adhesionnishonitsinnerfasciaandshouldbeusedforcappingapplications.TheAT195Int
trimissuppliedwithahighadhesionnishonitsouterfasciaandshouldbeusedforinternal
corners, step applications or in gulleys*. The trim should be nailed at both edges if possible.
Always bandage over the join between where the nails penetrate the trim and the decking
before applying the laminate.
TRIM DETAILS: AT195 Ext: External angle trim. AT195 Int: Internal angle trim.
Cure It Reinforcement Mat
Beforethereinforcementmatislaidout,thedeckmustbecleananddryandallthetrimsxedinplace.Themathasacutedgeanda
feathered edge. Always overlap the feathered edge on top of the cut edge.
The mat is usually best laid parallel to the drip trim. Start by rolling the mat out, overlapping the trim by at least 50mm but not over the edge
of the trim. Leave the ends long at this stage. Roll out each 1m wide strip overlapping each time by at least 50mm right across the roof. The
ends can be cut off with a Stanley knife into the corner of the trim to leave a straight and neat edge.
Decideonthebestplacetonishlaminatingtherooffrom.Rollthematuptothefurthestpointfromtheladder.Leavetherollsontheroof
where they have been laid out to avoid any mix up if there is a deviation in size or angle from one length of mat to another.
Corners and joints
Cut200mmsquaresofmatforeachcornerand200mmstripsofbandageforeachtrimjoint.
Laminating the roof
Cure It Roong Resin
CureItRoongResinissuppliedintinsof20kg(foreaseofmixing,simplyusethemeasurementsontheCureItMixingBucket).
The Cure It Mixing Buckets are graduated in kilos which will allow easy calculation of the amount of hardener needed depending on the
ambient temperature. Hardener must be added to all resin and topcoat in order for it to cure.
Remove the lid from the can using a long screwdriver to bend back all of the lugs on the lid. It is very important to stir the resin in the can
before use, ensuring the additives that have separated get thoroughly mixed in.
Itisgoodpracticetomixasmallquantityofresin(1or2kilos)tostart
with to laminate the corners and bandage the trims. This will give the best
indicationofthecuringtimeoftheresinandconrmifthecorrectamount
of hardener has been added to the mix. Always use a hardener dispenser,
it is best to aim for a curing time of between 20 to 30 minutes. Refer
to the Cure It Mixing Bucket for guidance on adding hardener or refer
to the hardener addition chart on page 17.
*A D260 should always be used for areas with parapet walls or abutting walls to allow for expansion.
D260/D300 Application Diagrams
Techniques:IfalaminateofGRPrequiresaperfectnish,
i.e. it is somewhere likely to be frequently overlooked
such as a balcony, join lines between reinforcement mat
rolls can be avoided by feathering the reinforcement mat
This is achieved by roughly ripping a small strip off the
cut end of the reinforcement mat. When this is laid on top
of another feathered roll, the join will be seamless.
Brick
AT195 Int
AT195 Ext
Decking
GRP layer and
bandage
AT195 ext
Cure It laminate
AT195 int
Decking
Bandage
SEE THE TRIM APPLICATION SECTION ON PAGES 26 FOR FURTHER GUIDANCE

14
Stage 3
Laminating
Laminating
Corners and bandaging
Laya200mmsquarepieceofmatontheroofdeckand‘wetout’onboth
sides with resin (see hardener addition chart) using a 70mm application
roller. Place the mat onto the face of the adjoining trims with the bottom
edge on the radius of the trim. Fold around the corner and fold over the
top of the trim down on to the deck. It will be easier to dress and feather if
the mat is cut vertically from the top corner of the trim upwards. Using the
70mm roller, 50mm laminating brush and small consolidating roller, feather the corners into place. Any joint in the trims should be bandaged
using the same mix of resin. If any boards are not completely engaged these joins should be bandaged, even a small gap may cause resin to
leak through the boards which will lead to porosity in the laminate.
If any nails holding the trims are not going to be covered with laminate on the deck or corners they should be laminated with a small piece of mat.
The deck of the roof can be laminated before the corners and bandages have cured.
Bandaging for all other details can be completed as outlined in the GRP Edge Trim section.
Laying the main laminate
Unroll 1m of previously cut mat along the lowest part of the roof and align so it
can be unrolled across the roof without running off-line. Carefully roll the mat back.
Togetaratioof3:1one-thirdCureItRoongResin(withhardeneradded)shouldbeappliedontheboardandtwothirdsresinandhardener
on the mat dip the 140mm application roller into the bucket of resin. Lift the roller out of the bucket and without letting the excess run off,
drop3rollersfullontotheboardandcoat1squaremetre.Thiswillensurethatthereisaratioofone-thirdresinontheboard.
UnrollthematontotheCureItRoongResincoatedboard.Instripsof140mm(1rollerwidth)wetoutthematbydropping1rollerfullinthe
middleofeach140mmrun,pushtherollerawaytotheendofthe1metrerun,thenpullbackoverthefull1metre(gure4.)
Continueacrossthe1m²(approximately6runs)andthenrolltherolleroverthewholeareaagaintoensuregoodevencoverage.
Wetoutthenext1m²ofboardinthesameway,rememberingtouseonethirdoftheCureItRoongResinontheboardandtwo
thirdsofresinonthemat.Rolloutthematoverthenext1m²ofwetoutboardandcontinuetorollouttheCureItRoongResinas
previously described.
Note:
• Never attempt to lay a roof in wet weather or when wet
weather is forecast.
• If it starts to rain while you are laying a roof, the roof must be
 coveredandmustnotgetwet,alwayskeepalargevisqueen
 sheetonsitetocovertheroof.Thevisqueenwillnotbondto
the curing laminate
• If rain is forecast while laying boards, the boards can be
temporarily sealed with a coating of resin. Always ensure that
as much of the roof is covered as possible, ensure that edges,
or areas of possible water ingress are covered.
• If decking has become damp, do not attempt to lay laminate
on top.
• Always ensure that the surface you are laying onto is completely
dry and free from debris before you start. A wet surface can lead
to delamination
Note: Avoid spillages by masking off the roof properly,
anesprayiscausedwhenusingtheconsolidatorroller,
wind can carry this a considerable distance. It is important
to ensure that this is considered before the resin is used
on the roof. When resin has cured, there is no easy way
of removing it from car paintwork without damaging the
paintwork. (see spillages in the troubleshooting section.)
YOU MUST FOLLOW THESE INSTRUCTIONS TO
GAIN THE CORRECT RATIO OF RESIN TO GLASS.
Any other protrusions such as pipes, skylights or other
potential weakspots should also be laminated around/over
at this point.
Any joints between trim lengths are bandaged over.
A polyester roller is used to apply the resin to the
Reinforcement Mat.
CureItRoongResinisappliedtothedeckbeforethe
Reinforcement Mat is laid on the roof.
After the Reinforcement Mat has ‘wet out’, the consolidator
roller is used to expel air from the laminate and ensure the
Reinforcement Mat has been saturated by the resin. No
white patches should be visible.
As the Reinforcement Mat absorbs the resin, the laminate
becomes transparent.

15
Stage 3
Laminating
DeckiscoatedwithCureItRoongResin
Figure 4.
Premium cost options:
WhenaclientspeciesaCure
It roof there are a number of
different options available for the
weight,colourandnishofthe
roof. All of these should be charged
at a premium.
- The Cure It laminate can be
 speciedintwoweights:450g/
 m²and600g/m².450g/m²is
the standard weight for most
installations and will withstand
 foottrafc.600g/m2should be
 speciedwheretheroofwillbe
subject to regular heavy foot
 trafcsuchasawalkwayor
balcony. This would normally be
 speciedwithanaggregateslip
 resistantnish.
-Theroofcanbenishedinany
BS4800 colour.
-Theroofcanbenishedwitha
standard smooth or two choices
 ofnon-slipnish(seenextpage.)
Consolidating
LettheCureItRoongResinsoakintothemattobreakdownthebinderfor2to3minutes.Usingthe
paddle roller and applying a little pressure, roll back and forth along the 2 edges and the end of the wet
mat. Now roll the paddle roller over the whole of the wet out mat, ensuring the paddle roller makes at least
2 passes over the whole area. In colder weather the resin will be thicker and will take a little longer to wet
out.Whenalaminateiscorrectlywetoutitshouldbetransparent,thereshouldbenowhiteoropaque
areas.Takecareneartheedgeoftheroofandinwindyconditionsasanespraywillbeemittedfrom
the roller.
Make regular close inspections of the laminate as it is consolidated, checking for ‘pinholes’ and areas short
ofCureItroongResin.Pinholesinthelaminatewillleadtoporosityandwaterpenetration.
Whilecompletingthenextmetrewiderunoflaminate,putaquick‘washcoat’oftheresin
(1 roller full per 2m2)overthepreviousrunofnishedlaminate.
On all overlaps of the mat, pay extra attention to the ‘feathering in’ as this will improve the overall
appearanceofthenishedroof.
Preparation for topcoating
Taking care and paying attention at this stage will produce a roof of superb appearance. Using a Cure It
sanding pad with a 40 grit sand paper, lightly sand the corners and trim bandages. Sand off any unsightly
bres,takingcarenottosandtooheavilyonthecorneritselfasthismayleadtoholesappearing.Cutany
excess cured mat protruding beyond the trim with a sharp Stanley knife.
Sealanyabutmentswithwallsusingaclearsiliconesealant.FitanyC100simulatedleadashingbeforetop
coating and seal off the chase with a clear silicone sealant or Cure It Trim Adhesive. Occasionally mortar will
berequiredtonishthechase.
RollerisdippedintoCureItRoong
Resin and then applied to 1m length
of mat, one roller width at a time.
Consolidator roller is used after
allowingtheCureItRoongresinto
break down the reinforcement mat
binder for a minute or two.
Finished laminate
should be transparent.

16
Stage 4
Topcoating and Finishing
Topcoating the roof
TheTopcoatisaresinandshouldbetreatedinthesamewayasthebaseresin.Itrequirestheadditionofhardenerforittocure.
Always try to apply the topcoat immediately after the laminate is semi-cured (can be walked on, no stickiness) If this is not possible then
ensure topcoating is carried out within 24 hours to gain good bonding with the laminate. If the topcoating is left longer than 24 hours then
wipe down the laminate with acetone to gain a good bond of the topcoat to the laminate.
Remove the lid and stir the topcoat well before use. Ensure the styrene and wax at the bottom of the tin is fully mixed in. Pour out into the
mixing buckets enough topcoat to cover the perimeter of the roof (including the edge trims.) Use a 70mm application roller to coat the trims.
Arollerwillgetabetterandmoreevennishthanapaintbrush.Rollthetopcoatalongthefaceofthetrim.Holdtherolleratanangletothe
bottomofthetrimtocoverhalfoftheradiusreturnonthefrontofthetrim.Toprotectthefasciafromtopcoat,holdapieceofashingtrim
behind it as you topcoat the radius on the underside of the trim.
Calculatehowmuchtopcoatyouwillneedtousetocoverthemainbodyoftheroof.Addtherequiredamountofhardenerandstirwell.
Usingthe140mmapplicationroller,covertheremaininglaminatewithjustenoughtopcoatforthebrepatterntobevisible.Donotcoatthe
roof too thickly or the topcoat will crack. If a coloured topcoat is needed rather than the standard graphite grey, a colour pigment will need to
beaddedtoacleartopcoat.A20kgtinoftopcoatrequires2kgofcolourpigment.Itisessentialtomixthepigmentthoroughlyintothetopcoat
to avoid patchiness and uneven colour.
Cleaning Tools and Equipment
Buckets can be re-used for many jobs. When hardener is added to each mix, coat the entire inside of the bucket. When the resin has cured
after approximately 30 minutes it can be peeled out, leaving the bucket like new and ready for the next job.
Paintbrushes can be dropped into a re-sealable container of acetone and left for the next job. Use only paintbrushes that have unpainted or
uncoated handles, as the coatings will come off and contaminate the resin. Application rollers have sleeves that are removable. It is too time
consuming to clean the roller sleeves. Unscrew the nut with pliers and drop the used sleeve into the bucket of used resin.
Either use disposable latex gloves when handling hardener or resins or clean hands with hand cleaner. Do not clean hands with acetone. Wipes are
also a useful addition to your toolkit. As well as cleaning hands they are good for removing uncured resin splashes from windows and fascias.
Slip Resistant Finishes:
SlateGranulescanbeusedwithCureItTopcoattoachieveanExposedAggregateorCoatedAggregatenish(CoatedwithTopcoat).
Forthebestnishedappearanceavoidcoatingtheperimeteroftheroofandthetrimswithaggregate,andretainasmoothnish.To
achievethis,thetrimsshouldbetopcoatedbeforethegranulatedslateisapplied,alongwiththerst100mmoftheroofinboundof
the edge. When the topcoat has cured, use 50mm masking tape to neatly mask off the topcoated area of the roof, and then follow the
instructionsbelowfortherequirednish:
Exposed Aggregate
Applythetopcoattotheroofinmetrewidestripsstartingawayfromtheaccesspointattheusualrateof0.4kg/m².Aftertherstmetre
run,sprinklethegranulatedslateoverthetopcoatusing0.75kg/m²allowinga200mmborderadjacenttotheun-topcoatedareaofthe
roof. The border will prevent the next run of topcoat being applied onto the roof from becoming contaminated by the slate granules.
Continue to apply topcoat to the next metre strip and apply the granules to cover the previous border and leave another 200mm border
onthenextstrip.Repeatwithsubsequentrunsworkingtowardstheaccesspoint.
Curing time will vary. This can take at least 20-30 minutes in warmer weather and may be an hour or longer in colder conditions. Ensure
that the topcoat has completely cured before sweeping the excess granules together and collecting the excess in a bag or bucket to use
on the next job. Remove the masking tape from the perimeter. (See pic on page 6).
Coated Aggregate
Applythetopcoattotheroofinmetrewidestripsstartingawayfromtheaccesspointattheusualrateof0.4kg/m².Aftertherstrun
sprinklethegranulesovertheareaatarateof0.15kg/m².Rollthegranulesintotherunoftopcoatwiththeapplicationroller.
Repeatthisprocessforsubsequentrunstocompletetheroof.Thegranuleswillcureintothetopcoat.Removethemaskingtapefromthe
perimeter of the roof once the roof has cured.
DO NOT LEAVE ACETONE IN OPEN CONTAINERS. IT IS HIGHLY FLAMMABLE

17
Hardener addition
Hardener Addition
There are a number of important rules of thumb to follow when deciding how much hardener to add:
• Never use less than 1% even in the summer, just mix less resin at a time.
• Never use more than 4%, the gel time will not reduce any further beyond 4%.
• Neverunderestimatetheeffectoftemperature.Resinswillnotcureatorbelowfreezingandwillalwayscuremuchquickerindirectsunlight.
• When topcoating late in the day, add more hardener to allow for the lack of sunlight.
• In cold weather use winter hardener, in warm weather use summer hardener, in very hot conditions use slow hardener.
• Remember: Any hardened resin left in the bucket will exotherm. Heat is generated as the resin cures, so it should be kept well away from
other stored materials. Water can be poured over the resin to suppress the heat gain.
• Always mix the hardener into the resin thoroughly before using the resin (i.e. a good couple of minutes for a 10 litre bucket.) Failure to
do this can result in ‘streaking’ on the laminate, where streaks of uncured resin will remain visible and ultimately lead to a failure
in the laminate.
• Fastcurescanresultinaninadequatebond.
Deck/Resin
temp 22-35
o
C 18-22
o
C 12-17
o
C 0-11
o
C
Percentage
Hardener 1% Hardener 2% Hardener 3% Hardener 4% Hardener
Table of Percentages in Millilitres, Per Weight of Resin Used
Amount of
Resin Hardener Usage
1 Kilo 10 ml 20 ml 30 ml 40 ml
2 Kilo 20 ml 40 ml 60 ml 80 ml
3 Kilo 30 ml 60 ml 90 ml 120 ml
4 Kilo 40 ml 80 ml 120 ml 160 ml
5 Kilo 50 ml 100 ml 150 ml 200 ml
6 Kilo 60 ml 120 ml 180 ml 240 ml
7 Kilo 70 ml 140 ml 210 ml 280 ml
8 Kilo 80 ml 160 ml 240 ml 320 ml
9 Kilo 90 ml 180 ml 270 ml 360 ml
10 Kilo 100 ml 200 ml 300 ml 400 ml
11 Kilo 110 ml 220 ml 330 ml 440 ml
12 Kilo 120 ml 240 ml 360 ml 480 ml
13 Kilo 130 ml 260 ml 390 ml 520 ml
14 Kilo 140 ml 280 ml 420 ml 580 ml
15 Kilo 150 ml 300 ml 450 ml 600 ml
16 Kilo 160 ml 320 ml 480 ml 640 ml
17 Kilo 170 ml 340 ml 510 ml 680 ml
18 Kilo 180 ml 360 ml 540 ml 720 ml
19 Kilo 190 ml 380 ml 570 ml 760 ml
20 Kilo 200 ml 400 ml 600 ml 800 ml
WINTER
HARDENER
WINTER/SUMMER
HARDENER
SUMMER
HARDENER
SUMMER/EXTRA
SLOW HARDENER

18
Ready reckoner
Cure It materials estimation chart
ThisguideisanapproximationofthequantitiesofmaterialsrequiredwhenlayingaGRProof.Itshouldbenotedthatthesevaluesarenotan
accurate representation of the materials that will be needed for all GRP roofs of these sizes, detail and complex surfaces will adversely affect
thesevalues.Thematerialsinthetoptablearerequiredforeveryinstallation,manyofthematerialsinthelowertablecanbereused.GRP
Edge Trims are not shown. Always use a hardener safety dispenser.
Roof
Size
(M²)
70mm
Soft Roller
140mm
Soft
Roller
Small
paddle
Large
paddle
Brushes
(25mm -
100mm)
Acetone
(Litres)
Gloves
(Box)
Finishing
Tissue
150mm - 25m roll
Hardener
Dispenser
Cure It
Mixing
Bucket
5*2 2 1 1 2 1 1 1 1 2
10*2 4 1 1 2 3 1 1 1 2
25 4 6 1 1 4 5 1 1 1 3
50 4 8 1 1 4 5 2 1 1 4
75 6 10 1 2 6 10 2 1 1 5
100 8 12 1 2 6 10 3 1 1 5
200 12 20 3 4 10 15 5 1 1 5
Roof
Size
(M²)
Cure It Resin Cure It Topcoat Cure It Reinforcement Mat Hardener Bandage
- 1 roll
= 75m
OSB3 (8’X2’)
Inc. 5%
waste
Cure It
Trim
Adhesive
Kg cans
required Kg cans required Kg rolls required
(1% - 4%
Maximum)
bottles
required
5 8 1 x 10kg 2 1 x 5kg 2.5 6.6kg 100ml - 400ml 1 x 1kg 1 4 1
10 18 12m kit 4 12m kit 6 12m kit 12m kit 12m kit 12m kit 9 12m Kit
15 25 1 x 10kg
1 x 20kg 6 1 x 10kg 7.5 16.5kg 300ml - 1200ml 2 x 1kg 1 11 1
20 35 2 x 20kg 8 1 x 10kg 10 16.5kg 400ml -1600ml 2 x 1kg 1 15 2
25 42.5 1 x 10kg
2 x 20kg 10 1 x 10kg 12.5 16.5kg 500ml - 2000ml 2 x 1kg 1 19 2
30 50 1 x 10kg
2 x 20kg 12 1 x 5kg 1 x 10kg 15 16.5kg 600ml - 2400ml 3 x 1kg 1 22 2
35 57.5 3 x 20kg 14 1 x 5kg
1 x 10kg 17.5 16.5kg & 6.6kg 700ml - 2800ml 3 x 1kg 1 26 2
40 65 1 x 10kg
3 x 20kg 16 1 x 20kg 20 16.5kg & 6.6kg 800ml - 3200ml 4 x 1kg 1 30 3
45 72.5 4 x 20kg 18 1 x 20kg 22.5 33kg 900ml - 3600ml 4 x 1kg 1 34 3
50 80 4 x 20kg 20 1 x 20kg 25 33kg 1000ml - 4000ml 4 x 1kg 1 37 3
55 87.5 1 x 10kg
4 x 20kg 22 1 x 5kg 1 x 20kg 27.5 33kg 1100ml - 4400ml 1 x 5kg 1 41 4
60 95 5 x 20kg 24 1 x 5kg
1 x 20kg 30 33kg 1200ml - 4800ml 1 x 5kg 2 44 5
65 102.5 1 x 10kg
5 x 20kg 26 1 x 10kg 1 x 20kg 32.5 33kg 1300ml - 5200ml 1 x 1kg 1 x 5kg 2 48 5
70 110 1 x 10kg
5 x 20kg 28 1 x 10kg 1 x 20kg 35 33kg & 6.6kg 1400ml - 5600ml 1 x 1kg 1 x 5kg 2 52 5
75 117.5 6 x 20kg 30 1 x 10kg
1 x 20kg 37.5 33kg & 6.6kg 1500ml - 6000ml 1 x 1kg
1 x 5kg 2 55 6
80 125 1 x 10kg
6 x 20kg 32 2 x 20kg 40 33kg & 16.5kg 1600ml - 6400ml 2 x 1kg 1 x 5kg 2 59 6
85 132.5 7 x 20kg 34 2 x 20kg 42.5 33kg & 16.5kg 1700ml - 6800ml 2 x 1kg
1 x 5kg 2 62 6
90 140 7 x 20kg 36 2 x 20kg 45 33kg & 16.5kg 1800ml - 7200ml 3 x 1kg
1 x 5kg 2 66 7
95 147.5 1 x 10kg
7 x 20kg 38 2 x 20kg 47.5 33kg & 16.5kg 1900ml - 7600ml 3 x 1kg 1 x 5kg 2 70 7
100 155 8 x 20kg 40 2 x 20kg 50 2 x 33kg 2000ml - 8000ml 3 x 1kg
1 x 5kg 2 73 7
Edge trims and corners will also be required. Training recommended before use. *Cure It Accessory Starter Pack contains ancillary items that can be
used up to 10m2roof size.

19
General advice when laying a Cure It roof
Repairing a Cure it roof
If the roof surface becomes damaged by impact or has to be cut for any reason it can be easily repaired using the following procedure:
1. Wipe off the damaged area with acetone and lightly abrade the GRP surface with a hand grinder for a distance of 100mm from the damaged
area or edge to be joined.
2.Cutthe450/600gm²glassto200mmextrathanrequiredtocovertheaffectedareaandriptheedgesforafeatherednish.
3.Mixsufcientresinwithhardeneraspreviouslydescribed.Brushresinontotheareatobelaminatedattherateof0.5kg/m2.
4. Place the glass over the area, wet out the glass with resin at the rate of 0.5kg/m2. Stipple well with the brush or use
a paddle metal roller for larger areas.
5. Ensure that the laminate is free from air and completely consolidated and allow to cure.
6. Mix the Topcoat with hardener as previously described and apply with a brush at the rate of 0.4kg/m2.
7. Allow to cure.
This procedure will ensure that the patch or joining piece applied will bond to the original laminate and form a weatherproof patch over the
damaged or cut laminate.
Advice when using Cure It during Winter months
• Always check the local weather forecast.
• During the Winter, avoid topcoating a roof after 2-3pm unless it is a clear bright day and not too cold. The heat from the sun contributes a
great deal towards the curing of the laminate during colder months. After the sun has set, it is unlikely that the topcoat will cure over night.
 Ifleftuncured,thetopcoatmaycurewithdebrisandleavesstucktothesurface,orwithanundesirablenishifitrains.
• EnsurethatthesurfacetemperatureoftheboardsischeckedbeforelayingtheCureItRoongResinorTopcoat.(canuseinfraredthermometer)
• EnsurethattheCureItRoongResiniskeptwarmbeforeuseiftheambienttemperatureisbelow10
o
C.
• AlwaysensurethattheCureItRoongResinremainsindoorsinawarmplacethenightbeforeitisused.
• DonotuseCureItRoongResinorTopcoatintemperaturesbelow5
o
C.*
• Ifitbeginstorain,covertheroofwithavisqueensheet.
• Ifyouareunabletolaminateoveraprepareddeck,thencoatthedeckingwithhardenermixedwithCureItRoongResinandcoverany
exposed edges. This will seal the deck and prevent moisture uptake until the laminate can be applied. Always cover the edges of the roof
and uncoated boards with a polyethylene sheet.
• Always ensure the deck or substrate to be laid onto is completely dry before laying the laminate. Sweep off any excess water and mop up
the excess with dry cloths before allowing the roof to dry naturally. Wiping the surface with acetone can speed up this process.
• Do not start to lay a roof if a period of rain is forecast.
Advice when using Cure It during Summer months
• Always check the local weather forecast.
• DonotuseCureItRoongResinorTopcoatintemperaturesabove35oC.
• AlwaysmixsmallerbatchesofCureItRoongResinthanyounormallywouldtogiveadequatetimetoapplyitbeforeitstartstocatalyse.
• AlwaysuseextraslowhardenerinhotterweatheriftheCureItRoongResinstartstocuretooquickly.
• Always apply the laminate in the shortest runs possible across a roof. The shorter the length of laminate, the less likely it is that the Cure It
 RoongResinwillcatalysebeforeitcanbeconsolidatedintothelaminate.
• Use a temperature sensor to measure the surface temperature of the laminate before applying the topcoat. On surfaces that are too hot,
the wax component of the topcoat will melt and the topcoat may remain tacky to the touch, this will usually mean that any loose debris will
stick to the roof and the colour of the topcoat will also be impaired.
• If possible, topcoat the roof out of direct sunlight or wait until later in the day before applying it, this may mean that the roof will take you
longer but it will save you time spent returning to the roof to re-topcoat it at a later date.
Safe working practices
It is always the installer’s responsibility to ensure safe working practices for themselves and their employees and always pay attention to the
risks for other members of the public that may be nearby at the time. Installers should always assess any potential risks when working on a
contractandmakesufcientmeanstoaddressthem.Inadditiontothesenotes,theinstallershouldalsobeawareofthehealthandsafety
information that applies to most materials (see the relevant material safety data sheet for further information).
*
If the temperature is below 5
o
C, use extra cold resin and topcoat. This can be used between 0
o
C - 10
o
C.

20
Troubleshooting guide
Problems that occur while laying the roof
1) Failure of Cure It Roong Resin to Harden
Description of problem - Laminate is still wet and resin is uncured with no other symptoms.
Possible cause Remedial action
•CureItRoongResinmayhavebeeninadequatelymixed. •
Add Hardener to another batch of resin, ensuring that you use the
• Unsuitable hardener may have been used correct hardener. Always add extra hardener (doubling up if
(e.g. Extra slow or summer hardener used in winter.) necessary but not exceeding 4%) and roll vigorously into the
uncatalysed resin.
• Not enough hardener may have been used for the temperature. •
Larger laminates or laminates that have been left for a long time
or contaminated by dirt, debris or water etc. may need replacing
completely.
•
Always check the ambient temperature before mixing batches of
resin and consult the hardener chart for guidance if unsure.
2) Cure It Roong Resin cures too fast
Descriptionofproblem-CureItRoongResincuresbeforeitcanbeproperlyappliedandconsolidatedintotheReinforcementMat.
Possible cause Remedial action
• Unsuitable hardener may have been used • If the ambient temperature is very hot extra slow hardener
(e.g. Winter hardener used in Summer.) • Reduce the size of the batches mixed.
• Weather may be too hot for Summer hardener. • Always ensure that you are laying the shortest possible runs across
  arooftogiveyouadequatetimetoproperlyconsolidatethelaminate.
3) It begins to rain while laminating/topcoating
Description of problem - Roof has not yet cured and it begins to rain.
Possible cause Remedial action
N/A •
STOP! Cover the roof with a non-woven polyethylene sheet and try
to ensure that non of the laminate gets any moisture onto it.
•
Always ensure that you check the local weather forecast before you
start a roof.
•
Always have enough polyethylene sheets with you to cover the roof.
  Resincontaminatedwithwaterwillnotcureandrequireare-skin
(see below.) Continue when the weather and surfaces are
completely dry. Check for water contamination (below).
4) Water contamination (white staining of laminate)
Description of problem - Water contaminated resin usually appears as a white staining or milkiness. The resin will not fully cure.
Possible cause Remedial action
•CureItRoongResinhasbeencontaminatedbywater, •
Any white areas should be laminated over fully with a 450g/m2
either from wet board or rain. laminate - ensure the area is completely dry before sanding with 40
grit sandpaper and wiping with acetone. Re laminate with 100mm
overlap of unaffected area.
5) Streaky laminate/topcoat
Description of problem - Laminate has partially cured, but has streaks of wet resin or lighter/darker colours running through it.
Possible cause Remedial action
•CureItRoongResinmayhavebeeninadequatelymixed. •
Always ensure that topcoat is applied thinly (0.5mm.) This makes it
• Pigment may not have been mixed in thoroughly. possible to reapply another layer of either properly hardened or
• May be contaminated by water. thoroughly mixed, pigmented topcoat. If using pigment or hardener,
add more to the second coat.