Metal Roofing in Graniteville, Rhode Island — Lifetime Interlock® Aluminum Shingles Installed Locally

Yes — aluminum actually thrives in freeze-thaw conditions. Graniteville experiences about 83 freeze-thaw days per year, where moisture gets into asphalt shingles, expands when frozen, and cracks the material. Aluminum is non-porous, so it won't absorb water. Its oxide layer self-heals when scratched, and it doesn't expand and contract the way asphalt or wood does, so it stays intact through repeated freezing. The Alunar 70% PVDF coating is warranted 30 years against the chalking and brittleness that typically follow harsh seasonal swings.

Metal roofing handles Graniteville's average 76 centimeters of annual snowfall with ease, primarily because it's extraordinarily light. The Interlock Shingle profile installs at only 0.41 lb/sq ft — about 96% lighter than concrete or clay tile — so no structural reinforcement is needed. The smooth, hard surface also sheds snow and ice far better than rough asphalt, reducing the weight that sits on your roof. Snow guards can be added if you want to control where snow slides. Most homeowners find their metal roof clears itself more quickly than they expected, especially on south-facing slopes with 3050 hours of annual sunshine.

Aluminum cannot rust because it contains no iron — rust requires iron to form. The moment aluminum is exposed to air, it forms a thin oxide layer that protects the metal underneath. If that layer is scratched (by a branch, for example), a new one forms automatically. Interlock uses roofing-grade 3105-H24 and 3003-H24 aluminum alloy per ASTM B209, and the Alunar 70% PVDF fluorocarbon finish is applied to both sides of every panel for extra protection in salt-air or moist environments. In Graniteville's damp climate with 1198 mm of annual rain, this corrosion immunity is a genuine advantage over steel that eventually oxidizes and deteriorates.

No. The Interlock Tile profile, for instance, weighs only about 0.59 lb/sq ft — roughly 96% lighter than concrete or clay tile — so most existing roof structures can support it without any reinforcement. This is one of metal roofing's biggest practical advantages. You can often install over your existing asphalt shingles, saving time and tear-off costs. Because the material is so light, installation is faster and safer for crews, and your home's framing doesn't face the additional load burden that traditional heavy materials impose. This matters especially in older homes where structural capacity may already be marginal.

Absolutely. Graniteville sees typical wind gusts up to about 118 km/h, and Interlock's four-way interlocking aluminum panels are warranted to resist wind speeds up to 120 mph (193 km/h) when installed to specification. The interlocking design means each panel is mechanically locked to its neighbors on all four sides — not just fastened to the deck — so wind has nowhere to grab hold. The system also achieved a UL 2218 Class 4 hail rating, the highest impact classification available, proving its ability to handle severe weather. Combined with the solid deck and underlayment that prevent noise, this construction is exceptionally rigid and durable in coastal New England storms.

Metal roofing performs exceptionally well in hail. Interlock holds a UL 2218 Class 4 impact rating — the highest available — and the Guardian Warranty even covers perforation from hailstones up to 1.5 inches. Some homeowners have seen insurance premiums drop after installing a Class 4-rated metal roof, though discounts vary by insurer and location. Request a quote from your carrier mentioning the Class 4 rating; many view metal roofing as a substantial loss-control improvement. In regions where hail is common, the combination of impact resistance and warranty coverage can meaningfully reduce your out-of-pocket risk compared to asphalt, which is easily damaged by large stones.

energy-efficient colors on Interlock roofing have thermal emissivity of 0.84 and initial solar reflectance up to 0.55 (Aged Copper Penny), which means they bounce heat away rather than absorbing it the way dark asphalt does. Over Graniteville's 3050 annual sunshine hours, this reflectivity reduces cooling costs, especially on south and west-facing exposures. Cool Roof Rating Council verification confirms the ratings. The light weight also means better attic ventilation — no heavy sagging that restricts airflow. In summer, reflective metal keeps your home cooler; in winter, the R-value of underlayment and deck provides insulation. You're not paying to cool or heat absorbed solar gain.

Metal roofing requires far less maintenance than asphalt, wood, or traditional tile. Asphalt shingles need algae treatment, granule replacement monitoring, and frequent repairs as they curl and crack. Wood shake splits and rots, especially in Graniteville's 1198 mm of annual rainfall and 83 freeze-thaw cycles. Tile cracks when walked on and requires repointing. Metal simply sheds debris: leaves wash off, moss doesn't establish on smooth aluminum, and the Alunar 70% PVDF coating is warranted 30 years against chalking and fading. You'll inspect gutters and flashing like any roof, but you won't replace shingles, treat rot, or seal cracks. That translates to decades of predictable, minimal upkeep.

The Guardian Warranty is a lifetime limited, non-prorated material warranty for the original owner — it covers rusting, rotting, splitting, cracking, curling, and loss of impact resistance for as long as you own the home. It's also one-time transferable, giving the next owner 50 years of coverage from the date of completion, which significantly strengthens resale value. The coating itself carries a separate 30-year warranty against chalking and fading (ASTM D4214 / D2244 tested). Because Interlock has been manufactured since 1998 and installed from coastal salt-air homes to Antarctic research stations, real-world longevity data backs the warranty. You're buying the last roof you'll likely install.

Interlock Metal Roofing (New England) Inc. has served the region since 1999 and specializes in Interlock installation throughout Newport County and beyond. A local installer with 25+ years in the market knows Graniteville's climate intimately — the 76 cm snowfall, 1198 mm rain, and 118 km/h wind gusts — and can design systems and flashing to handle it. They understand local permitting, work with regional contractors, and are available for service calls if questions arise. Currently, the region is offering no payments and no interest until Spring 2027, or 10% off installation. Call the local team for an estimate; they'll walk you through profile options, colors, and installation over your existing roof if that applies.