External Sheet to be Uniclad
profile in Aluzink coated steel to 0.55mm nominal thickness, including
alloy coating.
1.2 External Sheet Finish.
External finish to be Dobel 200XT Plastisol in standard colour. Reverse coat grey
backing coat. Alternative external finish Pvf2
1.3. External Sheet Fasteners.
Fasteners to be approved self drilling screws with stainless steel bonded washers
16mm diameter to specification recommended by fixings supplier, with caps to colour
match outer sheet. Fasteners to be fixed through profile trough at every pitch at eaves
and end laps and at every second profile pitch at intermediate supports.
1.4 External Sheet End Laps.
Laps to be a minimum length of 100mm.
1.5 Profile Fillers.
Profile Fillers to be polyethylene, tightly fitted behind flashings.
2.0 SPACER SYSTEM.
2.1 Spacer Specification.
Spacer system to be Uniclad Unigrid System consisting of structural grade galvanised
steel bars and bracket supports with thermal break seal pads. Bracket size 60mm - 200mm
to accommodate required insulation thickness and 'U' value.
2.2 Spacer Fixings.
Spacer system to be fixed to purlins with self-drilling screws, (normally two per
bracket), minimum length 25mm.
3.0 THERMAL INSULATION.
3.1 Insulation Specification.
Thermal Insulation to be mineral fibre roll. All edges to be close butted to achieve
continuity. Ensure insulation is not compressed between outer and liner sheets.
3.2 Insulation Thickness:
to be as required to achieve the specified 'U'value.
4.0 LINING
4.1 Lining Specification.
Lining to be Uniclad UC/1000 in hot-dip zinc coated steel, 0.40mm nominal thickness,
including alloy coating.
4.2 Lining Finish.
Liner coating to be Lining Enamel with bright white internal finish and grey backing
coat.
4.3. Lining Fasteners.
Liner profile to be fixed with self drill screws at every second trough to each support.
4.4 Lining End and Side Laps.
End laps to be not less than 40mm long.
4.5 Lining Sheet Profile Fillers.
Profile Fillers to be polyethylene foam, tightly fitted so as to prevent ingress of
internal building air.
5.0 FLASHINGS AND TRIMS
5.1 Flashings Specification.
External and Internal flashings and trims to be manufactured from the some material as
the Uniclad sheet used adjacently. Flat dimensions exceeding 200mm are to have a bend or
stiffener in order to avoid 'oil canning'.
5.2 Flashings Fasteners.
Flashings and Trims to be fixed of centres not exceeding 300mm using screws or sealed
aluminium rivets at 150mm maximum centres.
5.3 Flashings Laps.
Vertical and sloping flashings are to hove the same end lap detail as the adjacent
Uniclad sheeting. Horizontal flashings should hove butt end joints, with the joint
covered by a 150mm butt strap sealed to the flashing at each end.
