Roofing in Winter
CAN ROOFS BE REPLACED OR REPAIRED IN WINTER?
Roofing materials all behave differently in conditions below 40 degrees. There are types of materials that should not be installed in these conditions and some that can be installed any time of year, regardless of the weather.
Here’s some good information to keep in mind if you are curious about winter roofing options:
Low Sloped Roofs
Two low slope roofing systems are, in fact, able to be properly installed in the winter – PVC (Polyvinyl Chloride) and TPO (Thermoplastic Olefin). These thermoplastic single ply flat roofing products are mechanically installed and seams are hot air welded instead of using adhesives.
Rubber roofs, the alternative to these systems, should not be installed in temperatures below 40 degrees because the adhesives that seal it will freeze and not bond. Contractors who say they can and will conduct rubber roof projects are ignoring manufacturer suggestions and proceeding with this project can result in roof leaks and voided warranties. So, it’s a good idea to hold off on winter roof replacement if you’re looking at rubber roofs until it gets a bit warmer. The same goes for peel-and-stick materials, as adhesives won’t bond, creating leaks. This material can actually blow off your roof.
Asphalt shingles are the most commonly used material for sloped roofs and can be installed in the winter, but caution must be taken by roofers installing it. They must be careful not to bend and crack the shingle. Also, because asphalt shingles are dependent on a proper seal between the overlapping shingles, which requires heat from the sun to bond, these materials often do not seal properly until warm weather rolls around. This can cause them to blow off or leak.
Asphalt shingles are also susceptible to ice dams – large ice formations along the eaves of roofs caused by poor ventilation or inadequate insulation in the attic. Ice and water shield membrane is a great method to prevent ice dam leaks, but it also requires the sun’s heat to properly adhere to the roof deck, so some of the same shortcomings may apply.
Metal roofs can be installed in the winter without compromising quality. Cold conditions do not affect metal roofs since they won’t crack due to improper handling. They are designed to allow for expansion and contraction, so the outside temperatures won’t make a difference. Just be sure to use a premium breathable synthetic underlayment to combat moisture caused by poor ventilation and always upgrade intake and output ventilation whenever possible.
Call Holt Roofing Company with any questions or to set up an appointment for an estimate. We may not be able to do the work this minute, but we will absolutely be able to put you on our schedule for early 2018!