Below that crews may have issues with their equipment air compressors and hoses working properly and shingles may not seal espescially on northern facing slopes.
Roof shingles installation temperature.
Each shingle manufacturer will specify if they have minimum temperatures for install.
On roof summer temperatures for asphalt shingles 10 76 c about 50 f to 170 f research on shingle durability tests asphalt shingles at temperatures typically up to a maximum of about 170 f well below the temperatures that occur during manufacture of the product.
The shingles have a tendency to break or crack easily when temperatures are below 40 degrees.
If you re installing roofing shingles in cold weather below these temperatures your shingles may become brittle and more prone to breakage.
40 degrees is a good rule of thumb.
Ideal temperature to get the best results and to prevent breakage or softening of materials install roofing when the temperature is between 50 and 60 degrees f if at all possible.
If shingles are applied below 40 without the specialized adhesive you risk a voided warranty.
According to roofing construction estimating by daniel benn atcheson the best temperatures to install asphalt shingles is between 40 and 85 degrees f 4 and 26 degrees c.
Some manufacturers will even void the warranty.
If the roofing job needs to be done immediately due to leaks or wind damage lay a tarp over the damaged section of the roof or install temporary roofing.
If winter installation is unavoidable most asphalt shingle manufacturers require a specialized adhesive manually applied to each shingle for temperatures below 40 f 4 celsius.
You can still properly install shingles even below 40 f as long as you follow some rules and recommendations for cold weather installations.
In hot temperatures roofers often start very early in the morning and break at midday.
The ideal temperature for installing asphalt shingles is between 40 f 85 f 4 26 degrees celsius.
Ideally shingles should be installed at temperatures ranging from 40 f to 85 f.
Above 85 f it is easy to tear the shingles or mar the granular coating.
If you re wondering what temperature is too cold to install shingles here s the answer.