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A1 Roofing - Commercial roofer,commercial roofing contractor, roofing repairs,flat roof repairs in paramount and los angeles ca

We Offer the Highest Quality Commercial Roofing in Southern California.

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timthumb (1)Flat Roof Systems

Introduction to Membranes A roof membrane makes a roof system watertight. It is installed over the insulation (see picture). In some systems, a roof membrane may be installed right over a …


timthumb (3)Sloped Roofs

The terms low-slope and steep-slope describe roof slope. Slope is how much a roof slants. A low-slope roof is one that has a slope of less than 3 inches per foot. This means that …


timthumb (5)Roofing Terminology

Asphalt: A bituminous waterproofing agent applied to roofing materials during manufacturing. Back Surfacing: Fine mineral matter applied to the back side of shingles to keep them from sticking. Base flashing:That portion of the flashing …


timthumb (2)Low Slope Roofs

There are two kinds of roofs: low-slope and steep-slope. Low-slope roofs are usually found on commercial and industrial buildings, such as factories and warehouses. But many apartment buildings and townhouses …


timthumb (4)New vs Re-Roofing

A roof system can be installed on a new or existing building. Roofing a new building is called new construction. An entire roof assembly is installed from the deck up. When …


timthumb (6)Roofing Maintenance

A proven and cost-effective way to extend the life of your roof All roofs are exposed to severe and relentless forces: the sun’s heat and UV rays, thermal shock, building movement …