Drainage
Acrylic or fibreglass domes should not rely on sealants alone for weathertightness. The design of the penetration flashings should allow for adequate water drainage.
A water diverter-type penetration design must be used for penetrations wider than 600 mm, and proprietary rubber flashings must be placed at 45° to the roof pitch, as described in Penetrations.
Acrylic domes must not be used with unpainted galvanised flashings, and plastic roof lighting must not drain onto galvanised roof cladding or gutter.
To avoid inert catchment corrosion galvanised metals must not be used in conjunction with plastic roof lighting.
Clause:
014_008_007_000_000_000_000_000_000
Clause Number:
14.8.7
/cop/installation/translucent-sheeting#drainage
Revision Category:
0 - Clause Removed
Draft Clause:
013_008_007_000_000_000_000_000_000
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