It is essential that the correct installation and fixing procedures are followed.
Side Lap Details
To prevent the ingress of driving rain, side laps should be sealed and face away from the prevailing wind. In all cladding applications adequate end lap is critical. For roofing applications, the end lap is largely dependent upon the roof pitch. Please refer to the table below for guidance.
Fixing Order - Dependant Upon Prevailing Wind Direction
Fixing and End Lap Requirements
|
Roof
Pitch
|
Location
|
|
Sheltered
|
Exposed
|
|
Side lap
fasteners
centers
(max)
|
End
lap
(min)
|
Sealant
side and
end laps
|
Side lap
fasteners
centers
(max)
|
End
lap
(min)
|
Sealant
side and
end laps
|
|
Over 15º
|
450 mm
|
150 mm
|
No
|
300 mm
|
150 mm
|
Yes
|
|
10º - 16º
|
450 mm
|
150 mm
|
Yes
|
300 mm
|
150 mm
|
Yes
|
|
5º - 10º
|
450 mm
|
200 mm
|
Yes
|
300 mm
|
200 mm
|
Yes
|
|
Walls
|
450 mm
|
100 mm
|
No
|
300 mm
|
100 mm
|
Yes
|