Roof Apshalt Age

How old is your existing asphalt shingle roof.

Roof apshalt age.

It also depends on whether the old roof was removed and you only have one layer of shingles and if it is properly ventilated. One thing i have had a very difficult time with while trying to constantly become a better inspector is estimating the age of the roof shingles and it seems to be one of the most common questions i get. I can obviously tell when shingles are at or near the end of their useful life and i can also tell when they are less. This is an inexpensive flat roofing option but typically only lasts about 10 years.

Estimating roof age is difficult. 10 to 16 years. 30 to 45 years. Asphalt shingles are the most common of roof shigles and they have been around since the 1920s so they are an enduring roofing material.

If the roof was installed over another layer or several layers and it is older than 20. 24 to 30 years. Roofs last a long time with the typical asphalt shingle roof lasting between 15 to 25 years depending on the type of installation. 10 to 16 years.

Built up or modified bitumen. Three tab asphalt shingles are a linear traditional style that is rapidly declining in popularity and gradually disappearing altogether. 35 to 50 years. Dimensional roofing shingles are preferred by today s discerning homeowners.

I am a home inspector for about two years now in the saint louis area. Obviously the best way to know your roof s age is by keeping records from the last time the roof was replaced. Most experts agree that a typical roof will last between 20 and 25 years.