COLD WEATHER ROOF INSTALLATION
Typically It’s 40 degrees or Colder..!
The typical shingles planned for your roof replacement have been safely and successfully installed in cold climates for almost a century. That’s in Canada, the United States and all over northern Europe.
But working in the winter’s cold may allow a perfectly brilliant new roof, but there are several things to keep in mind. Not just for the owner but also the crews.
1. On a steep roof in the winter, if it’s very cold we have to be cautious about ice; and even cold surfaces are more slippery than warm and dry ones. Just wait until it’s free of ice and frost.
2. When installing the asphalt shingles in near freezing weather, remember they can become brittle and less flexible.
a. Don’t flop bundles at the top ridge of a roof as you carry them up to the work area. The folding over the shape of the ridge might crack or crease the shingles.
b. Makes sure the shingles are “flat” on the surface of the roof deck when you nail; otherwise the force of the hammer or nail gun may break the new shingle.
3. Most modern shingles, especially the ones offered by Carolina Storm Roofing, are manufactured with a heat-activated strip along the center. This is a special asphalt sealant that binds one course of shingles to the one below and above. As the shingles are exposed to higher temperatures over the next few week, from sunlight, the entire roof face can become one unified sheet of waterproof protection for your home.
a. A few roofers, like CarolinaStormRoofing, will hand seal those shingles to add more protection until the bonding temperatures arrive. This process of dabbing a few spots of asphalt roofing cement on the shingles helps prevent any wind uplift damage until the shingles are firmly “set” in place. Special attention is paid to the top six courses of the roof and all along the “rakes” of the roof. (Rakes are the term for the slanted diagonal edge of a roof at dormers and gables.)
4. The woven valley favored by most roofers, including Carolina Storm Roofing, does require each shingle to be bent, something a cold shingles dislikes. In very cold weather, we might suggest an open metal valley treatment.
5. And one last note to builders, both professional and amateur homeowners: The top Ridge Shingles will
also be at risk in the cold when it comes time to shape them over the peak. Consider storing the Hip & Ridge shingles in a warm place until it is time to install them, maybe the sunny or heated cab of the crew van…
6. Do not re-roof over existing shingles in cold weather. While it is legal in this area, the lumpy and uneven may be easily seen after the job is complete.
7. As inspectors walk the roof in cold weather, the shingles are more susceptible to cracking and breaking.
8. Snow removal is another issue; it is our recommendation that roofing be suspended until the snow is gone.