When people ask about the average life of a roof, the answer should vary widely because of several factors that make one roof different from the next. While a three-tab asphalt shingled roof will last between 15 and 18 years, that’s not going to be the case with every roof of that material, and this is due to a number of issues, including the quality of the materials being used, weather and the skill level of the contractors who put it on.
The typical home is built with a wood frame and the roof is a steep slope, covered by asphalt shingles, though a minority of homeowners will choose cedar or other materials. The rafter and attic spaces are typically closed off, which means they could be prone to moisture problems. One of the most common ways to fight moisture buildup is to provide proper ventilation.
In an improperly vented roof, moisture is allowed to rise up and condense in the attic. This will damage insulation and studs and any other material that has prolonged contact with the ...
