Below 40 f shingles are brittle and crack easily when hammered or bent.
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.
Installation temperature requirements for asphalt shingle roofs ideally shingles should be installed at temperatures ranging from 40 f to 85 f.
While the asphalt shingles will be the primary water shedding roof layer there are many benefits to installing a roof underlayment.
Once you ve done that cut your shingles to size if they re not already.
Then begin nailing the shingles to the roof working in rows and starting at the edge of the roof.
Above 85 f it is easy to tear the shingles or mar the granular coating.
To install asphalt shingles start by installing underlayment and new flashing on the roof.
The felt is laid in horizontal courses overlapping the eave ice and water protector by 4 and the valley membrane flashing by 6.
Continue to chalk additional guidelines based on the width of the shingle through at least four courses rows across the roof.