These roofs generally cost $4 – $8 per square foot installed. Modified bitumen roofs consist of five layers-insulation, modified base sheets, modified bitumen membranes, adhesive, and surfacing. It can withstand heavy environmental pressure and has a high tensile strength, meaning it won’t break easily under tension. Modified bitumen, an asphalt-based roof material designed for low-sloped roofs, has been used in the United States since 1975. Costs vary based on factors such as your location, the size of your roof, and the type of metal roofing you choose. They can withstand extreme weather conditions such as high winds and hail.Īn average flat roof replacement project can cost anywhere from $4 – $30 per square foot. Many people love metal roofs because they’re versatile, beautiful, and long-lasting. *Cost figures in this article were sourced from HomeAdvisor and internal data. Depending on the material, flat roofs typically last just 10 –15 years, although some flat roof materials can last for decades. Flat roofs can’t be built with asphalt shingles, though, because water does not drain off them properly. Asphalt shingles are the most popular material for sloped roofs and last up to 20 years. Some homeowners enjoy the versatility of flat roofs and use the space to plant rooftop gardens.įlat roofs usually don’t last as long as their sloped cousins, however. You won’t need to spend hours working with complex architectural details.įlat roofs are energy efficient, keeping homes warm in the cold months and cooler in warm climates.
#Flat roof systems residential install
Generally, flat roofs are cheaper to install than other types of roofs and may cost less to repair or replace because fewer materials are involved. These roofs may be called single-ply or single-layer roofs.
They are typically composed of a single layer of waterproof material, often made up of a deck board with felt and adhesive layers, but sometimes made from a sheet of metal.
Flat roofs are roofs that are pitched at 10 degrees or less.
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