Typical Residential Flat Roof Detail

A classic flat roof is either almost completely level or has a very slight pitch of 3 in 12 inches or less.

Typical residential flat roof detail.

Of course flat roofs are not flat but have a very slight roof pitch of between 1 4 to 1 2 per foot. Of all these membrane types epdm synthetic rubber is the most common single ply membrane roof material in both residential and commercial use. Some roofs actually slope in several directions ensuring optimal water runoff. Other roof protrustions sothat notiiing obstructs tiieflow ofair from eave to ridge.

However over the last few decades new and advanced materials have been developed. From there the flat roof system you choose will determine the materials you apply. Flat roofs are always built at a slight incline at least 1 8 inch per foot. Andrew t boyne architect.

This will help you create a flat roof framing plan. Just enough slope to drain water but also flat enough to be a problem if not constructed properly. Most flat roofs are typically not as long lasting or durable as sloped ones because the latter shed snow and rain a lot quicker. When framing a flat roof you will need to create a slight incline.

And their horizontal lines abound in the west and in urban areas. The insulation is placed below the waterproof covering and is either mechanically fixed or bitumen bonded on to the top of the deck. The parapet roof by far the most common type of flat roof isn t actually flat at all. But flat roofs take a pounding from harsh weather which is why they rarely last as long as a good sloped roof.

A parapet roof involves a typical sloped roof that is concealed behind a parapet wall so that it gives the impression of being flat. Cold roof insulation between rafters wnapor barrier on warm side below orw sheatiiing roofing roofing 2 x 8 sleepers notched for vent aligned wi rafters flashing over rooang fascia sheatiiing 2 x 4 sleepers aligned w rafters provide. The sandwich warm deck roof is the most common type of flat roof. Most often used in commercial and industrial applications this flat roof system contains layers of waterproof membrane such as a treated fiberglass basemat tar and gravel to seal the flat roof surface.

Inverted warm deck roof the insulation boards in an inverted warm deck are laid over the structural deck and the waterproof covering. Traditional homes often have sections of flat roof over shed dormers above porches and garages and on balconies. You can do this with a foam layer that exactly fits your roof.