Austin Roofing: Article About Average Lifespan Of A Roof
A number of factors can affect how long a roof will last. The type of roofing material used is one of the factors as different materials have vastly varying lifespans in average conditions.
Rubber roofing (EPDM) and modified bitumen have an average lifespan of 10 to 16 years. Three tab asphalt shingles have an expected lifespan of 15 to 18 years, but architectural shingles last from 24 to 30 years. Metal roofing and concrete tile have the longest expected life of the different roofing mediums. Metal (galvalume) roofing should last 30 to 46 years in average conditions, and concrete tiles are expected to last 35 to 50 years.
These timeframes are all estimates based on what could be considered average conditions, but many factors can shorten the lifespan of a roof. The majority of homes do not exist in strictly average conditions, and Austin roofing materials are subject to many of the risk factors for a shortened lifespan. Dark color will absorb more heat and shorten the life of a roof. The angle of the roof also has an effect, and the higher the pitch of the roof, the longer it may last.
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Roofs that slope in a south facing direction are exposed to more sun and will have a shortened life expectancy.
Many other factors can affect the lifespan of a roof as well. The quality of the materials used and the quality of the workmanship of the installation are two such factors. Discount or economy roofing shingles can shorten the life of a roof, and poor installation can do the same. Having multiple layers will also shorten the roof's life as can an attic that is poorly ventilated or not ventilated at all.
Another factor that affects the lifespan of a roof is local climate and weather. Huge temperature fluctuations over a 24 hour period can cause roofing materials to expand and contract, and this can cause accelerated wear and tear. Hot summers, extremely cold winters and severe weather can all shorten a roof's life. Trees can also wear a roof if branches are in contact with the surface, and accumulated leaves produce acids that will cause additional wear and tear.
The expected lifespan of a roof can vary greatly depending on a variety of factors. Where a home is located, what direction it faces, the color of the roof and the quality of the materials and installation are all factors in how long a roof will last.