Touching up problem areas with sealant can help as well but in most cases don t expect a wood roof to last more than 20 or 30 years.
How long should a shingle roof last.
The pitch or slope of the roof also affects how long asphalt shingles last.
These are the big boys.
That said standing seam metal roof will last well over 50 years without problems if installed properly and with the seamless 24ga coated steel.
When roofs have a low slope water snow leaves and other debris are left sitting on the shingles longer.
Where i live in south dakota the average asphalt shingle roof will last an average of 7 10 years because of quick temperature changes and hail.
As long as you maintain your roof and repair damaged shingles you can extend the life of a composite shingle roof 10 15 years.
You ll pay 250 to 600 per square for a wood shingle roof and warranties run up to 30 years.
Replacing those in patches is an easier job than replacing your whole roof.
Tile and slate roofing.
Asphalt tile roofs tend to last anywhere from 15 to 25 years.
This means excessive moisture can remain on the roof which can lead to mold mildew and rot.
Biannually if possible you should check your roof for any place where tiles are missing or disturbed.
Tile roofing is especially popular in the south and west and is an extremely durable material.