Roof Asphalt Shingle Installation

Installation temperature requirements for asphalt shingle roofs ideally shingles should be installed at temperatures ranging from 40 f to 85 f.

Roof asphalt shingle installation.

Use your chalk and tape measure to mark about 12 inches up on the roof for the first set of shingles. Continue to chalk additional guidelines based on the width of the shingle through at least four courses rows across the roof. To install asphalt shingles start by installing underlayment and new flashing on the roof. Installing asphalt shingles over an existing shingle roof it s not ideal to install new shingles without removing the old ones but follow this pro advice if you do.

While the asphalt shingles will be the primary water shedding roof layer there are many benefits to installing a roof underlayment. 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. Once you ve done that cut your shingles to size if they re not already. Starting at the bottom of the roof map out a guideline with chalk.

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