Roof Asphalt Shingle Installation

Below 40 f shingles are brittle and crack easily when hammered or bent.

Roof asphalt shingle installation.

Once you ve done that cut your shingles to size if they re not already. Above 85 f it is easy to tear the shingles or mar the granular coating. Continue to chalk additional guidelines based on the width of the shingle through at least four courses rows across the roof. While the asphalt shingles will be the primary water shedding roof layer there are many benefits to installing a roof underlayment.

Then begin nailing the shingles to the roof working in rows and starting at the edge of the roof. Starting at the bottom of the roof map out a guideline with chalk. The felt is laid in horizontal courses overlapping the eave ice and water protector by 4 and the valley membrane flashing by 6. Use your chalk and tape measure to mark about 12 inches up on the roof for the first set of shingles.

Although placing new roofing over old may be allowed by some codes roofovers tend to be inferior and won t last as long as a roof installed over stripped sheathing.