Cold Flat Roof Fascia Detail

For cold flat roofs the vapour layer needs to be positioned underneath the insulation layer on top of the room below to create an effective barrier.

Cold flat roof fascia detail.

The position of the insulation dictates which type it is. Whether the joists are angled or you use firrings. Or 050 stain less stl. Flat roof details and information relating to insulating a flat roof.

No flat roof is truly flat. Your flat roof construction detail drawing has one obvious mistake. Downspout strap detail 1 4 dia. The other is putting osb and insulation on even a slightly sloping roof means everything from the top of the joist up will not be plumb but run at an angle.

Cold rolled brass 060 alum. Hopefully this video will help explain the difference between cold flat roof construction and warm flat roof construction this videos show detailed drawings. Ventilation must also be provided through the eaves or roof ridges using fascia vents or the skylight upstand on the roof. Details both in 2d and 3d to give a clear understanding.

In a cold roof construction the sarnafil membrane is installed directly to the structural decking usually timber with firrings to fall. See more ideas about fascia roof edge roofing. Whatever new flat roof covering you choose epdm rubber kemper. X 5 8 bolt brass alum.

Similar to the pitched roof a flat roof can be insulated as a cold or a warm deck. No one online shows you this which is. This detail for cmu installation only. There must be an adequate void minimum 50mm between the deck and the insulation traditionally mineral wool to allow free movement of air and to prevent moisture vapour being transmitted from the building outwards where it could condensate in the roof.

Attention should be paid to bs5250 control of condensation in. Detail for attachment to metal panel siding or fascia. I explain problems with insulating a roof using the warm and cold roof construction methods.