When there is a problem with your roof, you call the GAF Warranty department. They will contact a GAF certified roofing contractor to inspect and repair roof. If the repair is covered under warranty there will be no charge.
The GAF System Plus Warranty covers labor and material.
If you have any question about the warranty you can contact Clyde Allen the GAF representative 801-664-6882
Note: GAF Manufacturer of shingles recommend you to hang shingles over drip metal on roof eaves 1/4 inch and 1/4 inch on rakes of roof.
If this is not done it causes water to roll back under shingles and causes leaking on eaves and rakes of roof.
GAF Manufacturer recommend 6 nails per shingle in high wind areas, and shingles to be Gauged at 5 1/2