Falt Roof System

The material usually organic felt or fiberglass felt is saturated in asphalt and rolled onto the roof s surface.

Falt roof system.

The most common of the flat roof systems are the five described below. Vegetative roofs can effectively provide an advantageous means for storm water control. Wind uplift is a primary concern when installing a retrofit single ply roof system rsprs over a structural metal panel roof. Of course flat roofs are not flat but have a very slight roof pitch of between 1 4 to 1 2 per foot.

From there the flat roof system you choose will determine the materials you apply. Material from which this system is comprised gets its name from some of the material used and the way it is applied to the roof it covers. Pros and cons for flat roof materials all three types of flat roofing cost 250 to 350 per square 100 square feet but prices vary according to region and size of the roof. 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.

It has a very low slope between 1 4 to 1 2 inch per foot so that it drains water. Just enough slope to drain water but also flat enough to be a problem if not constructed properly. These roofs have living plants that are typically installed in tray systems on the top of the flat roof surface. Astm e 1592 physical testing was performed on three test roof assemblies in order to determine the wind uplift resistance of an rsprs installed over existing structural metal panel roof systems fastened directly into purlins.

To sum up the difference between flat roofs i have compiled a scoring system out of ten for domestic properties 10 being the best and 1 the worst. The variation in lifespan depends often on whether the flat roof holds water the amount of details and joints as well as the quality of workmanship. Keep in mind a roofing membrane as a base to the system is vitally important to maintaining the roof s integrity and water tightness.