Modern roofing systems are meant to be weather-resistant, but there are many variables that result in some roofs being more resistant to wind damage than others. In today’s post, local roofing contractor Ben’s Construction Inc. takes a look at the factors that make some roofs less vulnerable to wind damage.
The building’s shape, as well as the roof slope, plays a key role in its wind resistance. Generally, vertical surfaces like exterior walls receive the full force of high winds instead of letting it flow over the surface. Therefore, the steeper the roof slope, the greater the wind damage inflicted on it. This is why building codes in coastal areas require roofs with low slopes — the wind flows over the roofing surface instead of ramming it head on.
The roof needs to be as close to seamless as possible to avoid giving wind a grip and tear off the roofing surface. This is why asphalt shingles with adhesive-backed edges are becoming more commonplace. When installed properly, these asphalt shingles behave like a monolithic surface that lets wind flow over the surface. This underlines the importance of proper installation, as even the best roofing system won’t perform as designed when not installed properly. If you are planning on getting a new roof, make sure that the roofer has trained and experienced installers, covered by a workmanship warranty or quality guarantee.
Some roofing materials offer better wind resistance than others. Above, we have discussed how asphalt shingles require adhesive backing to improve its wind resistance. In comparison, standing seam metal roofs are resistant to wind damage because of the way they’re installed. The seams are oriented vertically, which makes them parallel to the wind; instead of hitting the seams head-on, wind flows over them.
Heavy roofing materials like slate and tile are wind-resistant mostly due to their combined weight. Combined with fasteners that anchor each piece to the roof, they provide better wind resistance than most modern roofing systems. Flat roofs are either fully fastened to the roofing substrate or have a virtually seamless single layer, which makes them less vulnerable to wind damage.
Planning on getting a wind-resistant roof? Give your local roofers at Ben’s Construction Inc. a call at (508) 962-2417. You can also fill out our contact form to schedule a consultation.
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