Dunster House ATLAS P5-4030GAZAT User manual

INSTALLATION MANUAL
ATLAS OPEN GAZEBO
4.2m x 3.2m
P5-4030GAZAT
Please note:
1. If you have bought shingles, please use our shingle installation instructions.
2. If you have bought Atlas Single Carport/Garage or wall panel packs for your gazebo, please follow
the instructions provided at the end of these manuals for how to assemble the panels.
3. If you have bought Atlas Single Garage, please refer to the instructions provided with the garage
door pack on how to assemble doors.
4. Fixings are supplied with Gazebo (except for those required to secure Bracket to base)
Unique Product Reference Number:
__________________________________
Manufacturer:
Dunster House Ltd.
Caxton Road
Bedford
Bedfordshire
England
MK41 0LF
Customer Service Department:
[e-mail]
www.dunsterhouse.co.uk
V6

Queries Procedure
Important Information
You will need
Please retain all documentation relating to your purchase.
In the unlikely event that you need to contact us, please do so in writing to:
Email: [e-mail]
Post: Dunster House Ltd, Caxton Road, Elms Farm Industrial Estate, Bedford, MK41 0LF, England.
Our Customer Service department is open 9 a.m. to 5 p.m. Monday to Friday. Please include your Sales Order (SO)
number or post code in any correspondence with Customer Service to enable them to locate your file.
The Nature of Wood
The wood provided for your garden building is softwood which has been kiln dried and is pressure treated for
protection against fungal decay and insect infestation. Wood is a natural product which may have knots, knot holes,
imperfections, cracks and warping.
Due to the inherent properties of wood we make no guarantees with regards to the above, nor will replace any
lengths of timber for any of the following reasons:
•Any timber that contains knots where they do not influence the structural stability of the product.
•Cosmetic appearances - colour variations e.g. caused by the structure or age of the product.
•Timber that has shakes, cracks or gaps that do not influence the structural strength of the product.
•Any timber that has been covered or buried underground.
•Twisted timber that can be installed.
•Queries arising from a neglectful manner of construction be in the foundation or erection of the product.
•Queries due to modifications by the owner causing timber to deform.
Any valid queries will be satisfied by the exchange or replacement of the defective parts only.
Your Gazebo has been designed with the self build in mind. However, it is important that the assembly
instructions are followed carefully.
Precautions:
•Always use working gloves.
•It is essential to have an assistant.
•All screw holes need to be pre-drilled using a 3mm drill bit (not provided) to avoid timber splitting.
The Gazebo is pressure treated so you will not need to treat it immediately or apply a preservative.
Pressure treatment does not mean that the timbers are waterproof, so you may wish to apply water repellent.
Water repellent can also be applied to timbers treated with a preservative.
Colour Transfer
This product has been pressure treated with wood preservative and a brown colour additive. Consideration should
be given to the propensity of the material to stain light colour adjacent surfaces, such as paving flags, render or
coated timber surfaces. We recommend contact between the timber and these surfaces is limited, and careful
consideration to storing the product prior to assembly should been taken in order to prevent such discolouration.
2 People Measuring Tape Spirit Level Drill/Driver
Gloves Ladder Hammer Utility Knife
Mallet Pozidriv bits 3mm Drill bit Saw
Socket Set Spanner 16mm Masonry Drill Bit (Wall panels only)

Page 3
Components required for Atlas Open Gazebo 4.2m x 3.2m
120x120x2260.A
4x Post (Pressure Treated)
120x120x2260.C
2x Post (Pressure Treated)
45x140x3200.A
2x Beam (Pressure Treated)
45x140x2170.A
2x Beam (Pressure Treated)
45x140x2282.A
4x Rafter (Pressure Treated)
45x140x1785.B
6x Rafter (Pressure Treated)
2260 120
120
3200
140
45
2282
140
45
1785
140
45
2260 120
120
45
140
2170

Page 4
Components required for Atlas Open Gazebo 4.2m x 3.2m
45x140x1035.A
4x Rafter (Pressure Treated)
45x140x1035.B
4x Rafter (Pressure Treated)
45x140x962.A
1x Ridge (Pressure Treated)
45x140x630.A
12x Brace (Pressure Treated)
20x120x300.A
24x Post Trim (Pressure Treated)
F.1043.A
2x Roof Board (Pressure Treated)
F.1043
38x Roof Board (Pressure Treated)
1035
140
45
1035 45
140
962 45
140
630
140
45
120
300
1043 19
95
1043 19
53

Roof Board Sizes
DIM 'A' QTY
F.46.A 8
F.129.A 8
F.211.A 8
F.292.A 8
F.374.A 8
F.455.A 8
F.537.A 8
F.618.A 8
F.700.A 8
F.782.A 8
Roof Board Sizes
DIM 'A' QTY
F.863.A 8
F.944.A 8
F.1026.A 8
F.1108.A 8
F.1189.A 8
F.1271.A 8
F.1352.A 8
F.1434.A 8
F.1516.A 8
F.1597.A 8
PARTS LIST
DESCRIPTIONPART NUMBERQTY
40mm Ring Shank Nails568
Simpson BracketBracket LS308
M6 Clave NutClave nut48
Dunster House logo PlateDH LOGO METAL1
Simpson BracketH2.5 Bracket14
Circular WasherIFI 542 - 1224
L BracketL Bracket - 70x70x556
M6 Plain washers - Normal series - Product grade AM6 Circular Washer48
Hexagon bolts, product grade BM6x45mm Hex.Head Bolt48
Hexogon head wood screwsM10 x 120mm Hex head screw24
Sprider Bracket
SMB0142
Fixing35mm Screw210
Fixing100mm Screw18
Fixing120mm Screw4
45x45x2830
(Pressure Treated)
Page 5
x2 SMB015 Support (Pressure Treated)
Roof Board
Components required for Atlas Open Gazebo 4.2m x 3.2m
Dim 'A'
95
19
2830 45
45
2175 45
140
45x140x2175.A
2 x Half Beam (Pressure Treated)

Page 6
Assembly Steps for Atlas Open Gazebo 4.2m x 3.2m
** Avoid splitting timber parts by pre-drilling all screw holes **
- H2.5 Simpson Bracket
- Clave nut
- M10x120mm Hex, Head Screw
- Bracket LS30
- Circular Washer - SMB015 Bracket
- 70x70x55 L Bracket
- M6x45mm Hex.Head Bolt
- 35mm, 70mm, 100mm,
120mm, Screws

Page 7
Assembly Steps for Atlas Open Gazebo 4.2m x 3.2m
** Avoid splitting timber parts by pre-drilling all screw holes **
Step 1.
120x120x2260.A4x
45x145x3200.A2x
100mm Screws
18x
•Prepare 2 assemblies of the Beams and Posts as shown in the diagram below.
•Fix by screwing through the Posts into the Beams using (2x) 100mm screws per Post.
2725
Make sure the notches in
Beam are in line with the
cut-outs in the Posts
120mm Screws
Posts and Beam Layout
100 mm Screws
6x- 120x120x2260.A
2x 45x140x4245.B
120x120x2260.C
2x 120x120x2260.C
45x140x3200.A
45x140x2170.A
45x140x2175.A
45x140x2170.A
45x140x2175.A

Page 8
Assembly Steps for Atlas Open Gazebo 4.2m x 3.2m
Step 2.
45x45x630.Ax12
45x140x4245.B2x
35 mm Screws24x
70x70x55 Bracket
6x
100mm Screws12x
M10x120mm Hex Head Screws
24x
M10 Washer
24x
** Avoid splitting timber parts by pre-drilling all screw holes **
•Position prepared assemblies and remaining Beams. Join using the same principles as shown in 'Step 1'.
AB
•Make sure your posts are level vertically (use a spirit level).
•Use a tape measure to check the distance of the top and bottom diagonals (4 diagonals in total).
•Make sure they are all the same before continuing with installation.
•If they are different, slightly move posts to make all diagonals equal (A=B on the top and on the bottom of posts).
•If you have bought Atlas Single Carport/Garage or optional wall panels for your Gazebo, please refer to
the instructions provided at the end of this manual to find out how to install the panels.
•You will need to fix these in place now.
•If you have bought Atlas Single Garage, please refer to the instructions provided with garage door wall
pack to assemble door.
•Measure diagonals to check for squareness. Check Posts and Beams to make sure they are level !!
•Fix 70x70x55 Brackets to Posts using (4x) 35mm screws.
•Secure the Gazebo Posts to the ground using 70x70x55 Brackets. (Fixings not supplied)
•Fix (2x) 45x140x630.A Brace to each Post using (2x) M10x120mm Hex Head Screw and (2x) Washers.
M10x120mm Hex Head Screw
45x140x630.A
L Bracket - 70x70x55
SCREW 35mm

Page 9
Assembly Steps for Atlas Open Gazebo 4.2m x 3.2m
Step 3.
45x140x1785.B3x
45x140x962.A1x
45x45x28301x
SMB014 Bracket
2x
H2.5 Bracket
3x
M6x45mm Hex Head Bolt and Washer
12x
Clave Nut
12x
35mm Screws30x
** Avoid splitting timber parts by pre-drilling all screw holes **
Chamfered edge
Non-chamfered edge
•Connect (3x) 45x140x1785.B Rafters by sliding onto the chamfered arms of SMB015 Bracket.
•Fasten using M6x45mm Hex Head Bolts, Washers and Clave nuts.
•Repeat this step.
•Connect one (1x) 45x140x962.A Ridge similarly onto one non-chamfered end of SMB015 Bracket (see
diagram below)
•Lift one set of (3x) Rafters and SMB015 Bracket and Ridge together and align notches on Beams and
Rafters.
•Position (1x) 45x45x2830 SMB015 Bracket Support underneath SMB015 Bracket until all Roof Boards are
fastened.
•Refer to diagram on next page for Rafter spacing dimensions.
3x- H2.5 Bracket
M6x45 Hex Head Bolt and Washer
Notch
Clave nut
Important!
Non chamfered arms
must face towards
the posts
3x- 45x140x1785.B
45x140x962.A
2x- 45x45x2830
440

Page 10
Assembly Steps for Atlas Open Gazebo 4.2m x 3.2m
Step 4.
45x140x1785.B3x
45x140x2282.A
4x
45x45x28301x
120mm Screws
4x
SMB015 Bracket
1x
Clave Nuts
20x
M6x45mm Hex Head Bolt & Wash.
20x
35mm Screws30x
H2.5 Bracket
3x
** Avoid splitting timber parts by pre-drilling all screw holes **
•Lift other set of (3x) Rafters and SMB015 Bracket together and align notches on Beams, Rafters and Ridge.
•Position (1x) 45x45x2830 SMB015 Bracket Support underneath SMB015 Bracket until all Roof Boards are
fastened.
•Once SMB015 Support is in place at correct height, fit 45x145x2282.A Rafters by slotting and bolting them into
place.
•The Rafters should also be fixed onto Posts as shown using 120mm Screws.
•Check length of diagonals for squareness.
120 mm Screw
4x- 45x140x2282.A
3x- 45x140x1785.B

Page 11
Assembly Steps for Atlas Open Gazebo 4.2m x 3.2m
Step 5.
45x140x1035.A
4x
H2.5 Bracket
8x
45x140x1035.B
4x
Bracket LS30
8x
35mm Screws112x
** Avoid splitting timber parts by pre-drilling all screw holes **
•Fix remaining Rafters to 45x140x2282.A and Beams using Bracket LS30 and 35mm screws.
•Use H2.5 Brackets to fix rafters to Beams using 35mm screws.
•Space out brackets as per the diagram bellow.
H2.5 Bracket
35mm Screw
35 mm Screws
E
qu
a
l
E
q
u
a
l
Dimensions repeated
around gazebo

Roof Board Sizes
QTYDIM 'A'
8F.46.A
8F.129.A
8F.211.A
8F.292.A
8F.374.A
8F.455.A
8F.537.A
8F.618.A
8F.700.A
8F.782.A
8F.863.A
8F.944.A
8F.1026.A
8F.1108.A
8F.1189.A
8F.1271.A
8
F.1352.A
8F.1434.A
8F.1516.A
8F.1597.A
Page 12
Assembly Steps for Atlas Open Gazebo 4.2m x 3.2m
Step 6.
Roof Boards
160x
40mm Ring Shank Nail
568x
F.104318x
** Avoid splitting timber parts by pre-drilling all screw holes **
•Start to fix the Roof Boards by positioning the longest board flush to the ends of Rafter and 22mm to the
centre. See diagram below.
•Use 1x Ring Shank Nail for every Rafter it touches.
•Repeat the above steps for every roof section.
Leave a 2mm gap between each roof board
•Using the same principle from the previous step continue to place roof boards rising up to
the gazebo apex (place roof boards in levels rather than sections in order to keep roof
boards square.)
•Leave a gap of approximately 2mm between each Roof Board using a 2mm spacer (not
provided).
•Work your way up to the apex of the roof.
F.46.A
F.129.A
F.292.A
F.374.A
F.455.A
F.537.A
F.618.A
F.700.A
F.782.A F.863.A
F.944.A
F.1026.A
F.1108.A
F.1189.A
F.1271.A F.1352.A
F.1434.A
F.1516.A
F.1597.A
Diagram illustrates roof boards being placed.
F.1597.A
F.1043
F.1043
F.1516.A
F.1434.A
Completed Roof
F.1597.A
F.1043
F.1597.A
F.1597.A Ring Shank
Nails
Ring Shark
Nails

Page 13
Assembly Steps for Atlas Open Gazebo 4.2m x 3.2m
Step 8
F.1043.A2x
40mm Ring Shank Nail
4x
20x120x300.A 24x
35mm Screws48x
** Avoid splitting timber parts by pre-drilling all screw holes **
•Fix the remaining Roof Boards F.1043.A using ring shank nails.
•Fix four (4x) 20x120x300.A Trim onto each of the Posts using 2x 35mm screws per Trim.
Congratulations on your new Open Gazebo !!
Step 9
Diagram illustrates F.1043.A being
placed at the top of the gazebo apex.
35mm Screw
F.1043.A
F.1043.A

Page 14
Assembly Steps for Atlas Open Gazebo 4.2m x 3.2m
Plastic Waterproof Membrane:
•Fully cover the roof with the plastic waterproof membrane leaving a minimum of 30mm overhang.
•Use a staple gun or tacks to secure the membrane to the roof boards.
Felt:
•Starting at the lowest edge of the roof, lay the felt horizontally across the roof boards.
•Make sure that the lowest edge of the felt overhangs the eaves edge of the roof by approximately 40-50mm, and by
approximately 50mm on the front and back edges.
•Nail at approximately 200mm intervals.
•Overlap by 200mm if you need to connect two rows of felt.
•Continue laying the next layers of felt and nail into the roof boards at 200mm intervals horizontally and with 300mm
intervals vertically.
•Overlap the layers by 200mm and we recommend you seal any joints using the optional felt lap adhesive.
•Repeat this process on the opposite side of the roof.
IMPORTANT
•When the felt has reached the ridge, fold over a length of felt to cover both sides of the upper layers of felt by 200mm
or more, seal the joints and nail together.
•Make sure to nail the felt on both sides of the ridge.
•Diagrams used for visualisation purposes.
•Quantity of layers of the felt may vary.
(Felt)
Roof Membrane
Cut felt at
and angle Cut felt at
and angle
Roof Membrane
(not supplied)
Second layer Second layer 200mm overlap
200mm overlap
200mm Felt strips 200mm Felt strips
Cut out of felt
Cut out of felt
Use silicone for top
section and ridge parts
Use silicone for top
section and ridge parts
Overhang
Roof Felt
Roof Boards
Waterproof membrane
Minimum
20mm Clout nails

Page 15
Assembly Steps for Atlas Open Gazebo 4.2m x 3.2m
Important:
•If your shingles have a peelable plastic backing remove this before installing them to the roof.
•Felt lap Adhesive is an optional extra.
Step 1: Starting on the lowest edge of the roof, place a row of shingles over the top of the roof membrane, place slots
running upwards with the black edge of the shingle overhanging the roof by 15-20mm and nail along the bottom edge
of the tile using 4 nails provided. Carefully trim off any excess at the end of the row and keep any full 'tabs'.
Nails
15-20mm overhang
Shingles
Membrane
Lay a second layer of shingles on top of the first row. This time rotate the shingles 180 degrees so that the slots
are running downwards. Nail through the center band of the tile using 4 nails supplied.
Step 2:
Nails
Second layer of shingles with
the slots facing downwards.
Step 3: Lay the next row of shingles with the slots in the downwards position, offsetting the tiles by half a tab. Secure by
nailing through the center band.
Regular Shingle Installation
Lay shingles from the center
outwards for more even placement.
20mm Clout nails
•Place membrane over top of roof leaving a 15-20mm overhang on each side. if membrane does not overlap
whole area of roof face overlap a second piece with at least a 20mm overlap. Secure membrane to roof
boards using staple gun.
Membrane:
Apply felt lap adhesive to the underside
of each shingle tab (no amount larger
than 10mm in diameter to each corner).
'1 Tab'

Page 16
Assembly Steps for Atlas Open Gazebo 4.2m x 3.2m
Step 4:
Step 5:
Step 6:
Diagrams below are to represent shingle tiles
building up across the roof boards.
Continue to lay the shingles in a row off-set and by overlapping each row until you have reached the ridge. (Use the
off cuts to fill in the spaces at the beginning and end of the rows).
Cut the shingles into three tabs and taper the adhesive edge. Rotate shingles to run parallel with the ridge, gently
bend over the ridge and secure in position with nails. Once all ridge shingles meet at the tip of the roof overlap
shingles and secure into place with nails.
Newly cut ridge shingles
Overlap as shingles build up the ridge. This diagram represents shingle ridges overlapping and
being nailed into place at the tip of the gazebo roof.
Place further shingles across the top ridge of the gazebo using shingles cut out from the previous step. Secure
these into place with nails provided.
Important: Adhesive layer (Bitumen) on the back of the shingles will adhese the shingles together in warm
sunlight.
Dunster House Shingles installation video - https://www.youtube.com/watch?v=IFMFYYSUEUI
Regular Shingle Installation
Cutting line

Page 17
Assembly Steps for Atlas Open Gazebo 4.2m x 3.2m
Important:
•If your shingles have a peelable plastic backing remove this before installing them to the roof.
•Felt lap Adhesive is an optional extra.
Membrane:
Place membrane over top of roof leaving a 15-20mm overhang on each side. if membrane does not overlap
whole area of roof face overlap a second piece with at least a 20mm overlap. Secure membrane to roof boards
using staple gun.
Step 1: Starting on the lowest edge of the roof, place a row of shingles over the top of the roof membrane, place hexagon
shingles running upwards with the black edge of the shingle overhanging the roof by 15-20mm and nail along the
bottom edge of the tile using 4 nails provided. Carefully trim off any excess at the end of the row and keep any full
'tabs'.
15-20mm overhang
Shingles
Membrane
Lay a second layer of shingles on top of the first row. This time rotate the shingles 180 degrees so that the
hexagon shape is now running downwards. Nail through the center band of the tile using 4 nails supplied.
Step 2:
Step 3: Lay the next row of shingles with the Hexagon in the downwards position, offsetting the tiles by half a tab. Secure
by nailing through the center band.
Nails
Nails
Second layer of shingles with
Hexagons slots facing down.
Hexagon Shingle Installation
Lay shingles from the center
outwards for more even placement.
20mm Clout nails
Apply felt lap adhesive to the underside
of each shingle tab (no amount larger
than 10mm in diameter to each corner).
'1 Tab'

Page 18
Assembly Steps for Atlas Open Gazebo 4.2m x 3.2m
Step 4:
Step 5:
Step 6:
Diagrams below are to represent shingle tiles
building up across the roof boards.
Continue to lay the shingles in a row off-set and by overlapping each row until you have reached the ridge. (Use the
off cuts to fill in the spaces at the beginning and end of the rows).
Cut the shingles into three tabs and taper the adhesive edge. Rotate shingles to run parallel with the ridge, gently
bend over the ridge and secure in position with nails. Once all ridge shingles meet at the tip of the roof overlap
shingles and secure into place with nails.
Cutting Lines
This diagram represents shingle ridges overlapping and
being nailed into place at the tip of the gazebo roof.
Place further shingles across the top ridge of the gazebo using shingles cut out from the previous step. Secure
these into place with nails provided.
Important: Adhesive layer (Bitumen) on the back of the shingles will adhese the shingles together in warm
sunlight.
Dunster House Shingles installation video - https://www.youtube.com/watch?v=IFMFYYSUEUI
Newly cut ridge shingles
Overlap as shingles build up the ridge.
Hexagon Shingle Installation

Page 19
Assembly Steps for Atlas Open Gazebo 4.2m x 3.2m
•The guttering pack includes wooden wedges which should be fixed to
the eaves edging using one screw per wedge.
•The outermost wedges should be positioned approximately 200mm
from the ends of the eaves edging, Fig. A. Note - the wooden wedges
are there to create a right angle for the guttering brackets to fix to.
•If the pitch of your roof is very shallow, you do not need to use the
wedges.
•Fix the support brackets to the wooden wedges using two screws per
bracket, Fig. B.
•To install the water butt, connect the stop end outlet to one end of a
length of gutter, and connect a gutter union to the other end.
•Click the gutter into the support bracket nearest to the edge of the
cabin where you would like to position the water butt, Fig. C.
•Fix the gutter union to the wooden wedge with one screw, ensuring
that there is 1 degree of fall towards the water butt to allow the
guttering to drain.
•Connect the next gutter section to the second union and click this
assembly into the first union and screw to the wooden wedge, Fig. D.
•A support bracket should be fitted centrally between the two gutter
unions.
•Mark its position with a pencil, remove the guttering to gain access
and screw into place using a wooden wedge if required, (see point 2).
•Continue adding sections of guttering to fit the length of your cabin,
repeating the previous steps and finish off by connecting the stop end
to the last section of gutter, trimming the guttering to the correct
length where necessary.
•The stop end should finish approximately flush with the end of the
eaves edging, Fig. E.
•Connect the downpipe to the stop end outlet and position the water
butt below the downpipe, with the lid removed.
•Mark and trim the downpipe so it extends into the water butt by
approximately 150mm.
•Note - the hole in the water butt lid will need to be cut out to match
the diameter of the downpipe.
•Once all the guttering components have been positioned correctly
screw the downpipe bracket to the cabin wall, Fig. F.
Fig. A
Fig. B
Fig. C
Fig. D
Fig. E
Running outlet
Downpipe
Water Butt
Downpipe Fixing Bracket (x2)
Support Bracket (x2)
Gutter Union
90 Degree Gutter Angle
Gutter Union Support Bracket
Water Butt
Support Brace
Downpipe
Running outlet
Guttering wedge
Support bracket
Stop end outlet
Gutter union
Stop end
(Guttering)

INSTALLATION MANUAL
Additional Wall Panels
Atlas Gazebo
Please note:
1. These instructions will enable you to assemble additional wall panels to your Gazebo.
The configuration of the panels shown on the illustrations may very from the product you have purchased.
2. For illustration purposes we have shown the 3 standard wall layout in theses instructions. You can mix and
match the panels as they are designed to work in any configuration.
3. Avoid splitting timber by pre-drilling ALL screw holes
IMPORTANT INFORMATION
Please remove component 45x140x630.A (Brace) if components CP1 and or CP8 are being installed.