Metal Roofing in Kittery, Maine — Lifetime Interlock® Aluminum Shingles Installed Locally

Yes. Kittery receives about 110 cm of snow annually, and Interlock's four-way interlocking aluminum panels shed snow and ice effectively because the smooth, hard surface prevents bonding and the lightweight design (Slate at 0.41 lb/sq ft) eliminates structural strain. Snow guards are available if you want to control slide-off timing. Unlike asphalt, which softens and holds ice, aluminum's rigidity and low thermal mass work with your roof's geometry to minimize dam formation. With about 80 freeze-thaw cycles per year in York County, this matters: asphalt deteriorates through repeated expansion; aluminum's oxide layer self-heals and does not crack or curl.

Aluminum has no iron content and cannot rust, making it inherently resistant to the freeze-thaw damage that degrades steel roofs and asphalt shingles. Kittery experiences roughly 80 freeze-thaw days yearly, and that constant moisture cycling—combined with 1013 mm of annual rain—would cause asphalt to crack, curl, and split. Interlock panels are 3105-H24 aluminum alloy per ASTM B209, coated with Alunar 70% PVDF on both sides (warranted 30 years). Water does not penetrate or expand within the material; ice cannot split panels. The Guardian lifetime warranty explicitly covers cracking and curling. This aluminum will still be sound when asphalt has been replaced multiple times.

No. Aluminum cannot rust because it contains no iron. When exposed to salt air or moisture, aluminum immediately forms a thin oxide layer that protects the underlying metal and self-heals if scratched. Interlock has been manufacturing roofs since 1998 and installing them from coastal salt-air homes to an Antarctic research station, with Alunar 70% PVDF fluorocarbon finish applied to both sides of every panel for additional protection. Steel roofing corrodes in salt environments; copper and lead oxide from ceramic tiles can leach. Aluminum stays inert. With Kittery's 1013 mm of annual rainfall and Atlantic proximity, this is not theoretical—it is the difference between a roof that degrades and one that does not.

No. Interlock panels are warranted to resist wind speeds up to 120 mph when installed to specification. Kittery's typical gusts average 21 km/h with recorded extremes near 135 km/h (about 84 mph), well within the warranty range. The four-way interlocking design locks adjacent panels together—wind cannot get underneath to lift edges. Unlike asphalt shingles, which are nailed only at the top and fail progressively, or standing seam systems that depend on a single fastening line, Interlock's mechanical interlock distributes wind load across the entire panel assembly. The Guardian warranty covers wind damage. In nor'easters, your metal roof is among the most mechanically secure roofing systems available.

Yes. Interlock is rated UL 2218 Class 4, the highest impact rating available, and the Guardian warranty covers perforation from hailstones up to 1.5 inches. Class 4 impact resistance often qualifies homeowners for insurance discounts because metal roofs outperform asphalt and wood in hail events. Aluminum is not dented by hail the way steel or copper are; the hard, smooth surface and material properties cause impacts to dissipate without permanent deformation. With about 3140 hours of annual sunshine in Kittery, hail events are not frequent, but when they occur, a Class 4 roof protects your home and your insurable value. Contact your insurer about premium reductions; many carriers recognize the UL 2218 rating and reduce your rate accordingly.

Almost certainly yes. Interlock Mediterranean Tile is approximately 96% lighter than concrete or clay tile and installs at only 0.59 lb/sq ft—so light it can install over most existing roofs without structural reinforcement. Even the heavier Shake profile at 0.58 lb/sq ft is negligible compared to the load an asphalt roof already carries or the weight an old structure was framed to hold. Kittery homes built to support traditional roofing have no issue with aluminum. Interlock is ICC-ES evaluated under ESR-1790 (reissued 2025) for code compliance nationwide. Because no tear-off or structural upgrades are necessary, installation is faster and costs less. Have your installer confirm deck condition, but weight is not a limiting factor for nearly any home.

Installation typically takes 2 to 5 business days depending on roof size and complexity, and Interlock Metal Roofing (New England) Inc. has served York County since 1999. A key advantage: most metal roofs install directly over your existing asphalt shingles—no tear-off labor or dump fees. The four-way interlocking panels snap together quickly, reducing installation time compared to nailing thousands of shingles. Weather can extend the timeline, and Kittery's 1013 mm annual rainfall means scheduling around dry windows is wise. Discuss timeline and weather contingencies with your installer upfront. Many homeowners appreciate that a tear-off is avoided, saving cost and keeping debris out of the neighborhood.

Virtually none. Asphalt requires regular inspection for curling and loss, wood demands annual treatment and repair, and tile develops algae and needs cleaning. Interlock aluminum does not degrade, curl, split, or rot. Twice yearly, clear leaves and debris from valleys and gutters—standard for any roof. That is the entire maintenance routine. The Alunar 70% PVDF coating is warranted 30 years against chalking and fading per ASTM D4214/D2244, so color does not fade even under Kittery's 3140 annual sunshine hours. No re-roofing, no repairs, no wood treatment. The Guardian lifetime warranty covers material defects for the original owner and transfers once to the next owner for 50 years from completion. This is the last roof you buy.

Yes. Interlock panels are approximately 95% recyclable aluminum, and at end of life—whether 50, 75, or 100+ years from now—they enter the scrap metal stream and are reused for new products. Asphalt shingles are torn off every 15–25 years and sent to landfill, generating landfill waste that lasts indefinitely. Over a home's lifetime, choosing metal eliminates multiple tear-off cycles and the associated debris, fuel burn, and landfill tonnage. Aluminum is CALGreen-verified for reduced maintenance, reducing future water and cleaning chemicals. With 1013 mm of annual rainfall in Kittery, your metal roof captures and sheds water efficiently without chemical treatment. Choosing aluminum is choosing once rather than repeatedly—a reduction in material consumption and environmental impact that compounds over decades.

Metal roofing costs more upfront than asphalt—typically 2 to 3 times the material price—but over 50+ years, it is far cheaper. Asphalt roofs last 15–25 years; in 50 years you replace asphalt 2–3 times at increasing labor costs, plus multiple tear-offs and landfill fees. Interlock's lifetime limited warranty covers rusting, rotting, splitting, cracking, and curling for the original owner, plus a 50-year term when transferred once to the next owner. Your total cost of ownership—material, labor, and replacement cycles—is lower with one metal roof than with three asphalt roofs. Current regional promotion: no payments and no interest until Spring 2027, or 10% off installation. Ask your installer for a 50-year total cost analysis; the math heavily favors aluminum when you account for every replacement and repair asphalt requires.