Leofric Building Systems FAIRFORD SHED User manual

INSTRUCTION
MANUAL
FAIRFORD SHED

Fixing Accessories
Leofric Building Systems - Fairford Shed Instruction Manual Page 1
DESCRIPTION USED FOR PRODUCT
M8 x 120mm MUSHROOM
HEAD BOLT
Securing Panels and Wall Plate
Together
M8 x 140mm MUSHROOM
HEAD BOLT
Securing Corner Panel to Wall
Panels
M8 HEX NUT Securing Panels and Wall Plate
Together
M8 WASHER Securing Panels and Wall Plate
Together
M8 PLASTIC TAPER WASHER Securing Panels and Wall Plate
Together
48mm GALV TRUSS HANGER Securing wooden trusses to the
Wall Plate
30mm GALV TWIST NAIL Truss Hanger
M8 x 75 COACH SCREW Gable Fascia to Wall
M1500 ANGLE BRACKET Batten to Gable Fascia

Leofric Building Systems - Fairford Shed Instruction Manual Page 2
DESCRIPTION USED FOR PRODUCT
40mm POLY TOP PIN Gutter Board
No. 10 x 50mm C.S.K WOOD
SCREW
Batten to Inter Truss
28mm BLACK SELA CAP Roof Sheet
28 x 6mm BLACK SELA
WASHER
Roof Sheet
No. 10 x 38mm C.S.K WOOD
SCREW
Roof Sheet
M6 x 50mm MUSH HEAD BOLT Batten to M1500 Angle Brk’t
M6 NUT Batten to M1500 Angle Brk’t
M6 WASHER Batten to M1500 Angle Brk’t
WOOD TEK 6.3 x 32 T19 M1500 Angle Brk’t to Gable Fascia
CLEAR SILICONE TUBES Seal Panels
BLACK BASE SEAL STRIP Base of Panels to Concrete Slab

DESCRIPTION USED FOR PRODUCT
30 x 30 x 90 DEG UPVC ANGLE
mr
Base of Panels to Concrete Slab
No. 10 x 50mm C.S.K WOOD
SCREW
Batten to Inter Truss
Leofric Building Systems - Fairford Shed Instruction Manual Page 3

Concrete Shed Base
Why do I need a concrete base? Can’t I use paving blocks or slabs, or just put it on tarmac?
e design of the concrete prefabricated building with panels bolted together requires a strong concrete ra
base. Any movement in the base will cause the shed to move.
e concrete base is the customer’s responsibility
e old saying, “a building is as good as its foundations”, is as true for your concrete sectional shed as it is for
any other type of building. e better the specication of the base, the more peace of mind you will have in
the future. If you skimp on the base, you may regret it later!
Concrete base design
Your concrete base needs to be designed properly to be strong enough not to crack or sink over the lifetime of
your shed.
Your shed base should be designed to suit the soil on your site. For instance, if the soil is clay, with the
likelihood of movement in the future, you will need to reinforce it, and probably make the ra thicker. If
your building is over 30 sq.m, you will need to gain approval from your local control oce, who will need to
inspect and approve your concrete shed base plans.
Ensure that you have a CLEAR and LEVEL base on which to assemble the garage.
Leofric Building Systems - Fairford Shed Instruction Manual Page 4

Leofric Building Systems - Fairford Shed Instruction Manual Page 5
You should thicken the edges of the base to a depth to suit the ground conditions. e thickness of the
concrete in the base will also depend on the soil conditions. e concrete mix design should be suitable for
a shed base – speak to your supplier and tell them what the concrete is intended for so they can provide the
correct mix. A minimum concrete thickness of 100mm (4”) is normally recommended, laid over at least the
same thickness of well compacted clean hardcore. e hardcore should be “blinded” with sand if you are
going to lay a damp proof membrane (dpm), normally 1200g polythene sheet. Steel reinforcement mesh will
further strengthen your base, your local agent or local builder will advise.
If you intend to store items in your shed once it has been built, we recommend the inclusion of a dpm.
Without the dpm there is no guarantee that damp will not spread into the building. Don’t forget that the base
will need time to “go o” or cure, before building on it. Allow at least a week, and more in winter.
e concrete base should be square. e shed needs to sit on a base about 75mm (3”) larger all round. When
setting out your base, make sure that the shuttering is square. To make sure your base is square, measure the
diagonals AD and BC – they should be the same. If not, adjust your shuttering until they are – your base will
then be square.
e external dimensions should be 150mm (6”) larger (75mm each side and front and rear) than the size of
the building you have bought. If in any doubt, seek advice and conrmation of the size of your building from
the company.
e concrete base should be level. ere must be no slope from side to side, back to front or front to back.
If you build your concrete shed on an unlevel base, the panels may not t together properly it may be dicult
for you to lay the necessary concrete llet, and the roof may not t properly. If the fall is to the rear, you may
well get puddles forming at the back of the shed.
e base must be higher than the surrounding area. It should stand out of the ground by at least 25mm (1”).
If not, water will stand on the base and may leak under the panels.
If the ground slopes down to the base, you should ideally dig out a trench 150mm (6”) deep around the base,
backlling with gravel or pea shingle, aer retaining the existing ground. Don’t forget to take into account
surrounding ground levels when you position your personnel door – if the ground is higher than the base, it
will catch as you open it. Obvious when you think about it, bit late when you have built the shed!
So, your base should be designed to suit your local conditions. It should be strong enough, at, square and
level, higher than surrounding ground and 150mm (6”) larger than the building size (external dimensions).
Finally, your concrete base should be positioned properly. Don’t forget that the personal door will project
from the side of the building when it is being opened, so position the base so that the door doesn’t foul a wall
or other building when you open it.

PLEASE LOOK UP! Trees, buildings etc can overhang, branches and gutters can aect the positioning, just
because it ts on the base, doesn’t mean it will t at eaves height!
Don’t position the building too close to other buildings or walls, as this can form a water trap – always specify
gutters on your shed to minimise the potential for water leaking into your shed. Allow for guttering on your
building if you order it – add in 150mm each side ++for guttering.
If you are using a local builder to carry out the base works for you, please give him this before he starts work.
Leofric Building Systems - Fairford Shed Instruction Manual Page 6

Leofric Building Systems - Fairford Shed Instruction Manual Page 7
With a CHALK LINE mark out the external size
of your shed ensuring that it is square, then apply
black Bitumen tape to the base just inside of the
CHALK LINE, so you can still see the CHALK
LINE when your concrete panels are in position.
Step 1
Step 2
Starting in the LEFT hand REAR CORNER assemble your corner using the HEEL AND TOE
method of assembling, assemble 3 panels either way loosely, then using a SPIRIT LEVEL upright your panel
and tighten the bolts ensuring that the tops are ush against each other.
Once you have done this continue with the rest of your building keeping it fairly even until all of your
concrete is assembled. Place your doors and windows in the required positions with the header panels tted
above them.

Where required, a window consists of the frame, two
short panels and a lintel. Butt the short panels
together and to a standing standard panel. Secure with
bolts 4” (100mm) long, nuts and tapered washers.
Fit plastic angle to top of panels. Stand the window on
the short panels with the outside face of the
panels and the small sill projecting over the short
panels. Support the window until the lintel and the
adjacent panels are xed.
Place the concrete lintel on top of the window and
secure to the adjacent standard panels. Secure with
bolts 4” (100mm) long, nuts and tapered washers.
NOTE that there must be at least one standard panel
width between windows or between a window and a
personal door.
Window Fixing
Fix the window to the short panels and to the lintel with 80mm Self Drill Screws.
Leofric Building Systems - Fairford Shed Instruction Manual Page 8
Windows

Leofric Building Systems - Fairford Shed Instruction Manual Page 9
Fort Knox Personal Door
Butt the door frame against the adjacent standard panel
in the required position. Secure with Coach bolts 4”
(100mm) long, nuts and tapered washers.
Place a lintel above the frame and x to the standard
panels with Hexagon Head bolt 4” (100mm) long, nuts
and tapered washers.
Closure Set
Fit square bar through the hole in the door and place
the handle / lock sets on the ends of the square bar.
Fix the handle / lock sets with the screws provided and
check operation of handles and lock.
Doors
NOTE: It may be necessary to remove and rex the
weather strip from the steel frame to gain access for
the Coach bolts.

Leofric Building Systems - Fairford Shed Instruction Manual Page 10
Intermediate Trusses
Lower intermediate trusses into truss hangers and x in
position with square twisted nails 1 1/2” (40mm) long.
Truss Hangers
Place truss hangers equidistantly on wall plate at a
maximum distance of 3’4” (1m) apart.
Ensure hangers on opposite walls are in line so that the
intermediate trusses will be square to the walls.
Fix the truss hangers by nailing square twisted nails 1
1/2” (40mm) long into the tops of the wall plates. e
inside face of each truss hanger must be ush with the
inside face of the wall plate.
Fit your internal ROOF TRUSSES into position using the COACH SCREWS at 4 intervals then prop them
up so they are upright and attach your TIMBER PURLINS to the roof.
Step 3
Now attach your uPVC fascia boards to the outside of your building, making the two ends ush with your
front and rear fascias. e gutter brackets can be attached to your desired fall.
Step 4
Fixing Gutter Brackets to Wall Plate
Using a string line mark positions for gutter brackets on the outside edge of the wall plate, a fall is not
necessary for the gutter.
Fix one bracket 1’ (300mm) in from each end of the wall plate with the tops of the brackets in line with the
mark. Fix brackets with two No. 8 countersunk screws 5/8” (16mm) long. Fix remaining brackets
equidistantly between end brackets, and not more than 3’ (900mm) apart.

Leofric Building Systems - Fairford Shed Instruction Manual Page 11
Step 5
NOW you are ready to attach your ROOF SHEETS. Place your roof sheets one at a time making sure you
have ADJUSTABLE OVERHANG either side and that they are square, and x them as required using the
WASHERS and CAPS supplied.
Roof Sheets
WARNING: Whilst xing roof sheets, a ladder
or duck-boards must be used to avoid damage.
Observe utmost caution when working on roof
sheets which are wet or frosty.
A No8 x 65 round head screw and sela washer and cap to be used to x the roof sheet. Lay the rst roof
sheet against the back front fascia with the same overhang each side x, to timber roof battens with No8 x 65
round head screw, screws evenley spaced.
Lay the rest of the roof sheets along the roof with a minimum of one overlap, x in the same way as before.
Fixing
When the fascias are securely xed, place the sheets on the roof structure.
Mark accurately the position of all xing holes on the roof sheeting for intermediate purlins.
Fix all screws complete with plastic sealing washers in the positions shown,
tightening suiciently to seat the plastic washer rmly over the corrugations.

Leofric Building Systems - Fairford Shed Instruction Manual Page 12
Bolt a metal bracket (S89) to the top and bottom
of the rear corner panel at which the downpipe
is to be tted - special holes are provided for this
purpose.
Attach one plastic pipe clip to the barrel of the
downpipe at a position corresponding to the
top metal bracket and a second clip to the shoe,
which slots over the bottom of the downpipe.
Oer up the downpipe to the gutter outlet and
secure to the previously placed metal brackets
via the plastic with one seam bolt and nut per
bracket.
Silicone
External Finish - Joints
Ensure joints are clear then seal the external joints
between panels by applying mastic with the gun
provided. Cut the nozzle of the cartridge so that a
bead of approximately 1/4” (6mm) is delivered.
Aer applying to the outside of all joints press
nishing granules into the surface of the mastic.
Where, as an optional extra, the outside walls are
to be separately nished with a textured weather
coating Do Not apply a mastic lling.
NOTE: Where guttering is tted, before
securing the roof sheets lay the felt strip
provided along the top edge of the rear wall panels
so that half the width of the felt drapes into the
gutter.
Silicone all internal joints with clear silicone as detailed above.