The roof’s lifetime and any corroded areas should also be gauged before putting on any extra weight.įall protection is also different on corrugated and trapezoidal metal roofs. “There are some lighter gauge metals out in the market that are not as strong, so just check the roof structure before getting up on the roof to analyze and review where you’d like to layout your PV modules,” Reilly suggested. But that’s also not as easy as working on a comp shingle roof. Once a metal mounting system is chosen, it’s time to jump on the roof. Other companies, such as SunModo and S-5!, offer solutions that attach to the special trapezoidal ridge. It is located in the flat section of the roofing panel, so an EPDM washer easily creates a weatherproof seal without requiring additional sealant. It attaches to the roofing structure in the flat surface between peaks. SnapNrack’s Metal Roof Base for trapezoidal metal roofsįor trapezoidal metal roofs, SnapNrack offers a specific solution with its Metal Roof Base. Many companies have multiple brackets or clamps with different installation techniques.) S-5!’s CorruBracket and EcoFasten’s CorruSlide also span one ridge, but the CorruBracket attaches in the valleys, while the CorruSlide attaches more toward the bottom of the hump, not quite in the valley. Still, SnapNrack suggests installers use a compatible adhesive sealant to ensure a waterproof connection. The fastener is positioned at the top of the ridge, out of the water channel.
SnapNrack’s Corrugated Straddle Block attaches to the roof at the peak of the corrugation. The type of metal roof will affect the type of solar mounting system needed for a successful install.Įach mounting manufacturer has a different design and way to attach to sinusoidal corrugated roofs. Trapezoidal roofing has more flat space in between peaks. For example, sinusoidal corrugated roofing’s ridges and grooves are closer together, in a consistent wave-like pattern. To further complicate things, there are several variations of metal roofs. SnapNrack’s Corrugated Straddle Block can be used on sinusoidal corrugated and trapezoidal metal roofs
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