The 18mm roof grade deck is then fixed on top of the rafters leaving suitable air flow between the insulation and the deck.
Cold deck flat roof detail.
Guidance advice on.
In terms of the thermal design of a flat roof what are the options and the best practices of flat roof build ups.
The sandwich warm deck roof is the most common type of flat roof.
In the case of a flat roof insulation is usually either a rigid board above the deck or a mineral glass wool quilt immediately.
The recognised flat roof build ups for best design practices are.
This is known as a cold roof because the roof deck and roof space are close to the external air temperature.
This video shows the key features of a flat roof cold deck construction and how to draw the details to a scale of 1 10.
The insulation is placed below the waterproof covering and is either mechanically fixed or bitumen bonded on to the top of the deck.
Introduction warm cold roofs this guidance offers guidance on the difference benefits between warm and cold roofs.
The epdm rubber roof membrane is then installed using the contact adhesive onto the deck.
Hopefully this video will help explain the difference between cold flat roof construction and warm flat roof construction this videos show detailed drawings.
Cold deck roof a cold deck roof is where the insulation is placed between the joists rafters or in between the ceiling joists in the case of a pitch roof.