For roofing contractors in the southern states it s a welcome relief to the brutally hot summer roofing seaso n.
Roofing felt in cold weather.
Shingles installed in cold weather may not immediately seal until warmer temperatures are present for the sealant to activate.
Typically contractors avoid cold weather roofing for three specific reasons.
Yes asphalt shingles can still be installed successfully in cold weather providing a few important changes are made to the usual practices.
Extra care should be taken when handling and or installing asphalt shingles when the air and surface temperatures are at or below 40 f 5 c.
Roofing in cold weather is unlike roofing in any other temperature.
The cold weather shrinks the felt to 9 feet long by 9 feet wide.
For contractors in northern areas it means it s time to adapt to the winter roofing season.
In fact roofing in the cold weather requires special preparations and procedures.
These formations don t allow the snow on the roof to melt and they often cause roof leaks.
The best time to lay a felt roof using cold applied adhesive is when the weather is warm but this means that working on a flat roof can be exhausting work with the sun s heat and the heat reflected from the felt already laid.
The background on cold weather roofing.
Eaves protector membranes and roll roofing casma recommends using winter weather membranes to seal your eaves valleys skylights vents and plumbing pipes rather than warm weather roll roofing which can buckle or wrinkle when applied in cold weather.
People who want to use a nail gun for this purpose must be experienced because when they use it for roofing in cold weather it is not uncommon to injure themselves.
We will assume that the felt is originally 10 feet long by 10 feet wide.
I know that cold weather is not really going to shrink felt a whole foot but for the sake of clarity let s say cold air shrinks the felt by 1 foot.
The rolls of felt are quite heavy and to avoid damage must be handled with care.
Weather adhesives and tools.
If the temperature dips below freezing frost ice and snow become a serious safety factor on the roof.