Wind Ratings
Wind Ratings | Metal Roofing | Roofing | Rockwood
When Rockwood’s mountain breezes turn into 120-mph gusts, HEP makes sure your home stands firm. Our wind-rated metal roofing systems are engineered with interlocking panels, concealed fasteners, and high-strength substrates that shrug off flying debris and the sudden pressure changes that peel away ordinary shingles. The result is a roof that looks striking on day one and keeps its sleek profile through decades of Tennessee storms, blistering summers, and ice-laden winters.
Beyond brute strength, HEP’s craftsmen bring precision and pride to every installation, sealing out moisture, reflecting solar heat, and often lowering insurance premiums thanks to superior wind uplift ratings. Whether you’re safeguarding a cozy lakefront cottage or a sprawling hilltop estate, our team handles everything—from free inspection to final cleanup—so you can relax beneath a beautiful, worry-free layer of metal roofing that’s built to outperform and outlast.
FAQs
What wind speeds can a properly installed metal roof in Rockwood withstand?
Most residential-grade metal roofing systems we install in Rockwood are engineered, tested, and warranted to resist uplift pressures created by winds of 140–150 mph (equivalent to a Category 4 hurricane). Some premium concealed-fastener panels and structural standing-seam products are rated up to 180 mph when fastened over solid decking with high-strength screws. Your exact rating will depend on panel profile, fastening schedule, roof height, and exposure category.
How is a metal roofs wind rating determined?
Manufacturers submit their panels and attachment systems to rigorous uplift testing such as UL 580, UL 1897, and ASTM E1592. These tests simulate real-world wind pressure, measuring the force required to detach panels from their substrate. The resulting uplift values are compared with design wind loads calculated under the International Building Code (IBC) and ASCE 7 for the Rockwood area. When the tested capacity is greater than the calculated design pressure—with an appropriate safety factor—the product earns its stated wind rating.
Does installation affect the final wind resistance of my metal roof?
Absolutely. Even the strongest panel can fail if its not installed to manufacturer specifications. In Rockwood we use: • High-strength #12 or #14 self-tapping screws with corrosion-resistant coatings • Fastener spacing as tight as 6 in. on center along edges and ridges • Full-length, continuous clips on standing-seam panels to allow thermal movement while keeping panels anchored • Sealant tape or butyl mastic at sidelaps to block wind-driven water • Edge metal and ridge caps secured with stitch screws every 6 in. per ANSI/SPRI ES-1 guidelines A certified installer and a final inspection are the best guarantees your roof performs to its published wind rating.
Can a high wind-rated metal roof lower my homeowners insurance in Rockwood?
Many insurers that serve Roane County recognize the superior wind performance of metal roofing and offer discounts of 5–15 % on the wind/hail portion of your premium. To qualify, youll typically need: (1) proof of product testing such as an ICC-ES or UL evaluation report, (2) installation certification or invoice from a licensed roofer, and (3) photos or a permit sign-off showing the roof was installed according to code. Check with your agent before the job starts so you know what paperwork to keep.
How does metal roofings wind performance compare with asphalt shingles?
Architectural asphalt shingles are usually rated to 110–130 mph, but that rating often requires special starter strips and six nails per shingle. Over time, shingle sealant can weaken, making blow-offs more likely. By contrast, metal panels are mechanically fastened to the deck and do not rely on adhesives. They also have fewer horizontal seams that wind can lift. In post-storm damage surveys, metal roofs show roughly 70 % fewer wind-related failures than asphalt roofs of similar age.
What maintenance is required to keep my wind-rated metal roof performing over the years?
Metal roofs are low maintenance, but a quick annual check helps preserve wind resistance: 1. Inspect screws and clips for backing out or corrosion; replace any loose fasteners. 2. Make sure edge metal, ridge caps, and flashing havent been bent by ladders or fallen branches. 3. Clear debris from valleys and gutters so water can flow freely during wind-driven rain. 4. Trim back overhanging limbs to prevent impact damage that could compromise panels or fasteners. 5. After any severe wind event, have a professional look for panel distortion or displaced sealant. Catching minor issues early keeps your roof within its original wind design parameters.