If more than about 35 of your roof is going to need repair due to wind or hail especially if it s already 12 years old the cost effective decision might be to replace it all.
New roof installation temperature.
Here s what goes into a contractor s quote.
Metal shingles and standing seam roofs may be installed in any weather including cold temperatures.
Thermoplastic single ply membranes tpo pvc with heat welded seams can also be installed in cold weather.
The best time to install a new roof is when the weather is warmer than 50 degrees the shingles need heat from the sun to seal.
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.
40 degrees is a good rule of thumb.
Repair is costlier on a per square foot basis because it is more time consuming to integrate new shingles into a roof here and there than to install them over the entire roof.
If you re installing roofing shingles in cold weather below these temperatures your shingles may become brittle and more prone to breakage.
If the installer does not follow the cold weather instructions few can afford to because it requires you to hand seal each shingle you can have a shingle blow off.
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.
Of course new shingles need to undergo thermal sealing which can take several days and even weeks in temperatures of 40 degrees fahrenheit or higher.
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.
Each shingle manufacturer will specify if they have minimum temperatures for install.
The best temperature range for roof installations is between 70 and 80 degrees fahrenheit 21 27 degrees celsius but when is it too cold to roof.
Roof replacement during the summer summer is one of the busiest times of the year for roofing companies.
Another positive point is that roofing material prices will be cheaper in these months.
If you have a favorite roofing material that you d really like to install in your new home but are worried about its energy efficiency it s good to know that most materials do have a cool roof option.
Tear offs require many unseen parts like underlayments and starter strips.
A new 3 250 square foot roof can range from 6 500 to more than 20 000.
Many roofing products have adhesive properties that require the sun s heat for activation.
It is recommended to install them when the outside temperature is above 40 f degrees.