How To Nail Asphalt Roof Shingles
The issue happens because 3 tab asphalt shingles run on a 5 inch exposure you see 5 inches of the shingle out of the full 12 inches while dimensional shingles run on 5 inch exposure.
How to nail asphalt roof shingles. Nail the shingles from one side to the other so they remain flat on roof. How to nail asphalt roof shingles to resist wind damage roof damage to asphalt shingles caused by high winds from hurricanes tornados and other storms can be reduced by. Nail metal flashing called drip edge along the bottom edge of the roof deck near the gutters. If you are putting a layer of asphalt shingles over an existing layer of asphalt shingles on to a 3 4 inch deck or a plank deck then you should be using 1 1 2 inch nails.
Working your way up and across begin laying your courses. Be mindful of the proper nailing technique so that your nails always hold the top edge of the course beneath it. Then secure another nail an inch above each. Use sticky back ice and water shield as underlayment where ice dams or leaf and twig dams are likely to build up and at.
Gaf mastering the roof chapter 08 proper fastening is critical to the perfvormance of any roof system. Fasten shingles with corrosion resistant nails. Use the correct roofing nail material size and grade as specified in the shingle installation instructions. If you try to upgrade your 3 tab shingle to a dimensional shingle when nailing over it causes an aesthetic issue.
If your decking is less than 3 4 inch then a 1 1 2 inch nail will suffice. Stay consistent and you will increase the uplift resistance of the shingles. Apply six nails to each shingle rather than the standard four. Drive nails flush with the shingle but not deep enough to damage the shingle.
Generally as you start shingling the roof lay a row of shingles beginning from the lower left corner of the roof and nail down the shingles as you go along.