1 find out the date of the building permit.
Find out age of roof.
This is a significant investment so you should find out the exact date when your current roof was installed before you purchase your home.
The dark streaks are caused by algae.
Roofs last a long time with the typical asphalt shingle roof lasting between 15 to 25 years depending on the type of installation.
Estimating roof age is difficult.
1 do you see dark streaks on your roof.
99 of shingles manufactured today are algae resistant.
While it s very tough to determine a roof s exact age you can get a general sense by looking for some of the signs above.
This resistance is achieved by a.
If you didn t think to ask during the home sale it s not too late.
How old is that roof.
However there are some ways to find this out on your own.
A roofing expert is going to be pretty good at examining the types of shingles the state of them and comparing that with the environment to give you a legitimately scientific estimation of its age.
Twenty percent of these were off by seven years or more straight line depreciation.
This the most accurate way to age a roof but not all jurisdictions require building permits for roof replacement and sometimes the homeowner has the roof replaced without a permit.
In some cases those signs point toward needing a roof replacement.
Most roofing experts suggest that roofs will last between 25 30 years.
If your roof shows.
There are four ways to determine the age of a roof of a home your are considering buying or already own.
Unless you live in a very rural town that is void of any zoning laws or building codes or if the roof on your home predates the local government chances are there is a public record in your local town village city or county clerk s or code enforcement officer s office that details any major exterior renovations to your home including a roof replacement.
We re going to go over a few of these.
In 4 out of 5 claims 80 percent the permit documented roof age was older.
The best way is to find solid proof with paperwork.
No adjustment for condition.
Other signs of an aging roof include leaks and water damage wear and tear on your roof s valley and missing or rusted flashing.
How do you know the age of your roof.
Ask the previous owners.
There are a few methods to finding out the age of your roof if it s unknown.
Here are two quick things you can do to help you determine the age of your roof.
Copper offers an old world appeal to your roof as it ages to a pale green patina and can last up to 100 years.