Most experts agree that a typical roof will last between 20 and 25 years.
How often to replace your roof.
When determining how long your roof will last there are several important factors to keep in mind.
You ve already invested so much into your home so don t hesitate to invest in a good roof.
On average your roof should last you between 20 and 50 years.
All this affects even the best kept roof after such an extended period.
How often should you replace your roof.
By this time it has undergone significant wear.
After 45 75 years slate roofing is rarely subject to an entire roof replacement.
You should get a roofing contractor to perform a roof inspection every year to see what condition your roof is in and tell you if it needs to be replaced.
Most roofs with asphalt shingles will last an estimated 15 to 20 years.
An average roof needs to be replaced after 15 50 years depending on the material used ventilation and climate factors like humidity heat and cold.
An asphalt shingle roof should last between 20 and 30 years says claude mcgavic executive director of the national association of home inspectors.
Knowing when a roof was installed and what it s made of offers insight into how much life it has left.
You can expect architectural asphalt shingles to last a bit longer at an average of 25 to 30 years.
For instance a typical asphalt shingle roof lasts 20 to 25 years while a roof installed.
Two major signs of imminent roofing replacement are powdering on the underside and major delamination or flaking.
If you have a 40 year old roof there could be.
It has weathered three decades of storms wind and rain plus snow in the winter and heat in the summer.
It also depends on whether the old roof was removed and you only have one layer of shingles and if it is properly ventilated.
A more expensive roof will last you longer and you won t have to maintain it as often.
If the roof was installed over another layer or several layers and it is older than 20 years chances are you need a new roof.
Below are some different roof types their estimated lifespans and their relative cost.
These suggested time frames will vary depending on the climate that the roof is exposed to.
In general this is the recommended replacement schedule based on the material used.
When your roof is between 20 and 25 years old you should start thinking about a replacement.
Severe winters and humidity may wear out the materials more quickly.
Galvalume or metal roofing materials have an estimated lifespan of 30 to 45 years and concrete tile generally lasts between 30 and 50 years.
Here are some common estimates to take into consideration for how often to replace a residential or commercial roof.
