Normal defective product storm damage foot traffic etc.
Worn asphalt roof.
It is a high performance water based system that will provide an exceptional level of protection and will not peal or flake.
In fact if an existing roof deck the structural surface beneath the roofing system is in good condition new asphalt shingles can even be installed over older shingles reducing the need and cost of a tear off of the old roofing.
The roof just looks old and worn.
Neighbors are getting new roofs.
Moss can grow.
3 tab asphalt roofing shingles with algae dark stains.
The warning signs that your roof is worn out that was posted by angie s list is pretty much spot on.
Visible signs of aging on a 3 tab asphalt shingle roof.
A qualified and honest roofing or general contractor should be able to tell you if your roof is worn out or if you can get another 5 to 10 years out of it.
Two coats are recommended since most asphalt shingled roofs that need to be coated are porous and worn out and will tend to absorb the first coat while the second coat leaves a protective surface film that stops shingle granule loss cracking curling and leaking.
Asphalt shingle leaks can be caused by a variety of things including folded shingles nail holes and flashing issues around corners chimneys or vents.
These wear factors affect most asphalt roof shingle types whether organic felt based or fiberglass fabric based and whether the shingle type is cutout or three tab strip type or a laminate type roof shingle.
Buy more than you ll need at the home repair store.
Causes effects of loss of protective mineral granules from roof shingles asphalt roof shingle defects.
This document describes most of the factors which determine the life expectancy of an asphalt shingle roof roofing shingle wear factors.
You should be able to count up how many damaged.
To complete the job properly you ll need.
Check with your contractor to see if this is a viable money saving option for your roofing project.
Shingle shield roof coating features a durable 2 part acrylic formula that is specifically designed to bond to worn damaged roofing surfaces providing a strong coating to help rejuvenate and extend the life of your roof.
Most shingles that are in need of replacement are three tab asphalt shingles.
If your roof involves some other variety of shingle you ll need to match your new shingles to the old.
Homes built around the same time period can be experiencing the same types of weather conditions can mean that your roof is nearing its useful life.