Metal Roofing in Lewisville, Texas — Lifetime Interlock® Aluminum Shingles Installed Locally

Aluminum cannot rust because it contains no iron — the element that oxidizes and corrodes. Instead, aluminum forms a thin, self-healing oxide layer that protects the metal underneath. Even if scratched, this layer repairs itself automatically. In Lewisville's climate with 1207 mm of annual rainfall and wind gusts up to 97 km/h that can expose raw metal, this self-healing property means your roof stays protected without ongoing maintenance or coating reapplication. Steel roofing requires paint or polymer coatings to prevent rust; aluminum does not. The Alunar 70% PVDF finish on both sides adds a 30-year warranty against chalking and fading, but the underlying aluminum itself is corrosion-proof for life.

Most existing roofs require no structural work. Interlock's metal panels are extraordinarily light — the Tile profile, which replicates ceramic and concrete aesthetics, weighs about 0.59 lb/sq ft and is roughly 96% lighter than the traditional tile it mimics. Even the heaviest profile, Shake at 0.58 lb/sq ft, installs easily over most existing structures. This lightweight design means you can install a new metal roof over your current asphalt shingles without tearing off and hauling to landfill. Your home's framing, rated for conventional roofing, handles aluminum panels without reinforcement. Consult your installer — Interlock Roofing of America has served Denton County since 2014 — to confirm your specific situation, but structural upgrade is rarely necessary.

Interlock's four-way interlocking aluminum panels are warranted to resist winds up to 120 mph, well above Lewisville's recorded gust speeds of 97 km/h (about 60 mph). The interlocking design — where each panel locks to its neighbors on all four sides — distributes wind load across the entire roof system rather than relying on fasteners alone. This engineering meets ICC-ES evaluation ESR-1790 (the current building code standard, reissued 2025) and UL 2218 Class 4 impact ratings. In the 18 freeze-thaw days Lewisville typically experiences annually, this locked system also prevents panel movement that can loosen fasteners in weaker designs. The warranty specifically covers wind damage when installed to specification.

Yes, when you choose energy-efficient colors. Interlock offers profiles in reflective finishes with thermal emissivity of 0.84 and initial solar reflectance up to 0.55 (measured in Aged Copper Penny), which reflect heat that dark asphalt absorbs and transfers into your attic. Lewisville receives about 3434 sunshine hours annually — maximizing reflective roofing's benefit. energy-efficient metal roofs reduce cooling load compared to standard asphalt, particularly during the warm season when Texas demand peaks. The reflective coating is factory-applied and warrants against fading for 30 years, so the energy savings persist. Unlike asphalt, which darkens and loses reflectivity over time, aluminum's oxide layer maintains performance. For measurable summer cooling relief in a sunny Texas climate, specify an energy-efficiency color.

Interlock's Guardian Warranty is lifetime limited on material for the original owner — covering rusting, rotting, splitting, cracking, curling, and loss of impact resistance. The Alunar coating carries a separate 30-year warranty against chalking and fading (ASTM D4214 / D2244 tested). When you sell, the warranty transfers once to the next owner, who receives 50 years of coverage from completion, adding real resale appeal. Because aluminum panels resist the freeze-thaw cycles that crack asphalt (Lewisville has about 18 per year) and never rot like wood shake, they outlast conventional roofs by decades. No prorating means material defects are covered in full at any point during your ownership. This warranty structure reflects the durability Interlock has proven since manufacturing in Delta, BC, in 1998 — installations exist in Antarctic research stations and coastal salt-air homes.

Yes, one of metal roofing's major advantages is retrofitting over existing asphalt. Because aluminum panels weigh only 0.41 to 0.59 lb/sq ft depending on profile, you avoid the labor and landfill cost of tearing off old shingles. This also means no days of exposed decking during heavy rain — Lewisville averages 1207 mm annually. Interlock Roofing of America, serving the region since 2014, can advise on your specific roof deck and timeline. The installation process itself is faster than asphalt application because panels interlock, reducing the number of fasteners and ensuring four-way security. Your installer will verify that your existing structure supports the installation, but reinforcement is rarely needed. Timeline varies with weather and roof size; discuss specifics with your local installer.

Significantly less. Interlock aluminum panels resist the rot, curling, and deterioration that plague asphalt shingles over time. Unlike wood shake (which splits and requires ongoing sealing), aluminum cannot absorb water or split when Lewisville's 18 annual freeze-thaw cycles expand and contract materials. Unlike clay or concrete tile, aluminum doesn't crack or require mortar repointing. Routine maintenance is limited to occasional gutter clearing — same as any roof. Debris doesn't adhere to smooth aluminum, and the self-healing oxide layer protects against scratches. The Alunar 70% PVDF coating doesn't chalk or fade (30-year warranty), so you don't repaint. CALGreen-verified for reduced maintenance, Interlock metal roofing returns years of freedom from the repair cycle that consumes budget and attention on conventional roofs.

Aluminum is non-combustible and available in Class A fire classifications — the highest rating. ICC-ES evaluation ESR-1790 (reissued 2025) certifies Interlock profiles for compliance with the International Building Code and International Residential Code, the standards adopted in Texas. Non-combustible aluminum cannot ignite or contribute to flame spread, a critical advantage in wildfire zones or areas with brush risk. The ICC-ES evaluation confirms the entire system — panel, fasteners, and deck interface — meets or exceeds fire safety requirements for residential installation. This classification may also qualify you for insurance discounts in some policies. Interlock's aluminum panels, manufactured to ASTM B209 roofing-grade specifications, provide both fire safety and the durability to outlast the structure itself.

Metal roofing typically appeals to discerning buyers because it eliminates the most common home repair expense — roof replacement. A Lewisville buyer knows a standard asphalt roof lasts 15-20 years; Interlock's lifetime limited warranty (transferable for 50 years to the next owner) is a powerful selling point. The profiles — Slate, Cedar Shingle, Shake, Standing Seam, and Mediterranean Tile — replicate high-end materials without the weight, fragility, or maintenance burdens. The non-prorated Guardian Warranty transfers automatically, giving buyers confidence in long-term protection. Real estate agents note that metal roofs often attract buyer interest because they eliminate a major future cost, a selling advantage in competitive markets. Your home's curb appeal is enhanced by authentic architectural styling, while underneath lies 25+ years of protection without replacement. That combination — beauty plus eliminated maintenance expense — influences perceived value.

Interlock aluminum roofing is approximately 95% recyclable and ends the asphalt tear-off-to-landfill cycle entirely. When an asphalt roof reaches end-of-life, the shingles are torn off, hauled away, and landfilled — a one-time, one-direction waste stream. Aluminum panels can be recovered and remelted repeatedly without losing material properties, making them valuable to recyclers. This circular lifecycle means your roof, at the end of its 25+ year service life, has residual material value rather than being pure waste. Over Lewisville's 1207 mm of annual rainfall and 4 cm of snow, aluminum doesn't absorb water or degrade into microparticles that migrate into soil and water systems. The coating (Alunar 70% PVDF) is also engineered for longevity, so you're not replacing it every decade. CALGreen verification confirms the roofing system meets reduced-impact standards. Choosing aluminum is choosing a roof that genuinely closes the loop.