Cold Flat Roof Fascia Detail

Detail for attachment to metal panel siding or fascia.

Cold flat roof fascia detail.

In a cold roof construction the sarnafil membrane is installed directly to the structural decking usually timber with firrings to fall. 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. Whether the joists are angled or you use firrings. 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.

Similar to the pitched roof a flat roof can be insulated as a cold or a warm deck. To be 48 oz. No one online shows you this which is. A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less.

Attention should be paid to bs5250 control of condensation in. Ventilation must also be provided through the eaves or roof ridges using fascia vents or the skylight upstand on the roof. The position of the insulation dictates which type it is. Downspout strap detail 1 4 dia.

Installing a warm roof can be extremely straight forward and simple to do. X 5 8 bolt brass alum. This detail for cmu installation only. No flat roof is truly flat.

Flat roof details and information relating to insulating a flat roof. 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. It must provide adequate protection against the elements keeping the buildings structure and interior dry. Your flat roof construction detail drawing has one obvious mistake.

When we talk about a warm roof vs a cold roof what we re really talking about is the insulation of the flat roof. A flat roof must be strong durable and stable throughout its lifetime. Details both in 2d and 3d to give a clear understanding. Basically there are two options to choose from when insulating a flat roof.

Or 050 stain less stl.