Flat Roof Material Layout

Of course flat roofs are not flat but have a very slight roof pitch of between 1 4 to 1 2 per foot.

Flat roof material layout.

Underneath the basics flat roofs are usually constructed with a ceiling nailed to joists which support a deck usually wood in residential construction a vapor barrier insulation and a roof board. Once made of tar paper these types of roofs gradually are using more advanced materials such as fiberglass membranes. But flat roofs take a pounding from harsh weather which is why they rarely last as long as a good sloped roof. Built up roof bur the traditional hot tar and gravel roof is built from three or more plies of waterproof material alternated with hot tar and ballasted by a layer of smooth river stone.

Gravel is an excellent fire. Flat roofs usually come with a 10 to 20 year warranty but can last 25 years if you build the roofs right and maintain them using commonsense rules. And if you want to know more about keeping your home design safe and up to date check out the other articles on our website. From there the flat roof system you choose will determine the materials you apply.

And their horizontal lines abound in the west and in urban areas. Just enough slope to drain water but also flat enough to be a problem if not constructed properly.