5 Best Of Flat Roof Construction Detail Australia New Update 2021. Some roofs actually slope in several directions ensuring optimal water runoff. Flat roofs are built with a slight pitch of at least 18 per foot so water can drain either to centralized drains scuppers or a gutter system.
But it is often much more. Timber is by far the most common material for house framing in Australia. You can do this with a foam layer that exactly fits your roof.
In modern double roof construction the whole of the roof is constructed of lightweight roof trusses called trussed rafters See Module 4.
For a loft a conventional roof could be used. From there the flat roof system you choose will determine the materials you apply. Flat Roof Construction for Residential. Double roof with hipped end There are many designs and combinations of double roofs.