Three Types of Roofing -

Flat Roofs
Tile Roofs
Shingle Roofs

Links to more information about tile styles -

Sand-Cast Tile
Cholla Tile

Clay Tile
US Tile

Concrete Tile
Eagle Tile

Shingle Roofing
Owens Corning


General information





Flat Roofs

roof optionsThe flat roof is the ever-popular architectural design in Arizona and it continues to preserve the history and heritage of ancient dwelling styles still in existence today. The Sonoran and Native American flat roof building even takes precedence to the consequences of over-exposure to the hot desert sun and harsh elements. Other architectural styles may compete with the natural landscape of the Sonoran Desert and hilly backdrop but this flat roof design responds elegantly to the topography and environment of our beautiful Southwest lifestyle.

A-S Urethane Systems specializes in flat and low pitch roofs. They use their superior DURAGARD polyurethane foam application which is designed to last far longer than any other conventional roofing system on the market.

A Flat Roof, unlike the traditional sloped form, is horizontal with a slight grade to allow water to escape. Originally, tar and gravel was used in the application. These materials were sufficient in normal conditions but often failed in cold and extremely hot climates.

Low pitch roofs are used in areas with low rainfall and steep pitch roofs are necessary in areas with high rainfall and snow.

There are numerous flat roof applications such as coal tar pitch, asphalt, and turbo seal. However, A-S Urethane Systems applies the DURAGARD Roofing System that provides a continuous membrane covering with superior resistance to severe conditions and pools of standing water. This state of the art application is customized for commercial, industrial and residential use.

The Conventional Roof

Higher pitched roofs allow for products such as tiles or shingles which do not work well on low-slope roofs. It is necessary for these types of roofs to have a single-ply membrane or built-up roof system under these products.


All types of tile roofs are applied on both residential and commercial buildings.

Tile roofs are very aesthetic but are only as water-tight as the underlayment used. Generally, the minimum standard for underlayment is 30lb felt. However, our harsh Arizona climate demands an underlayment of 40lbs or better.


Shingles are chosen for design purpose and installed on residential roofs with slopes of 3 inches per running foot or greater. They are applied over 15-30 lb felt. Shingles weigh from 150 to 400 lbs per 100 square feet and have a lifespan of 20 to 40 years. They are made from fiberglass and asphalt and have a decorative granular texture.