Metal Roofing in Peterborough, Ontario — Lifetime Interlock® Aluminum Shingles Installed Locally

Metal roofs shed snow more readily than asphalt because aluminum's smooth surface and thermal properties prevent ice dams that trap meltwater. Peterborough receives about 137 cm of snow annually and experiences roughly 88 freeze-thaw days per year—conditions that crack and curl asphalt shingles but leave aluminum unaffected. Interlock's four-way interlocking panels remain watertight through repeated thawing and refreezing, and optional snow guards keep snow where you want it. The material's non-porous oxide layer won't absorb moisture and split like wood or asphalt.

Aluminum cannot rust because rust requires iron—and aluminum contains zero iron. Instead, aluminum develops a self-healing oxide layer that seals the surface and regenerates when scratched. This is why Interlock has installed roofs on salt-air coastal homes and even an Antarctic research station without corrosion failures. The Alunar 70% PVDF fluorocarbon finish, warranted 30 years against chalking, adds a second protective barrier. For Peterborough's moderate climate with 785 mm annual rainfall, this dual protection means your roof will not degrade from moisture the way steel or organic materials do.

No. Interlock metal roofs are warranted to resist wind speeds up to 120 mph (193 km/h) when installed to specification, and typical gusts in Peterborough reach about 104 km/h. The four-way interlocking panel design locks each sheet to its neighbors on all sides, distributing wind load across the entire roof plane rather than stressing individual fasteners. This engineering allows the lightweight aluminum—installed at roughly 0.41 to 0.59 lb per square foot depending on profile—to stay firmly anchored even in severe gusts. The Guardian warranty covers wind performance, protecting your investment through decades of Ontario weather.

Almost certainly yes—no reinforcement required. Interlock's Mediterranean Tile profile, for example, weighs about 0.59 lb per square foot and is approximately 96% lighter than traditional concrete or clay tile, yet delivers the same aesthetic. Even the heavier profiles install well under the load capacity of a typical residential frame. The lightweight aluminum allows installation directly over most existing roofs, saving you the cost and mess of tear-off and disposal. This is especially valuable in Peterborough, where asphalt tear-offs would otherwise end up in landfill. Your structural engineer may confirm, but in the vast majority of cases, your home already has the strength you need.

The Guardian warranty is lifetime limited for the original owner—non-prorated for material defects including rusting, rotting, splitting, cracking, curling, and loss of impact resistance. That single ownership period is then transferable, giving the next owner 50 additional years of coverage from completion. In practice, properly installed aluminum roofs routinely exceed 50 years because the base material doesn't degrade. Interlock has manufactured these roofs since 1998, and installations from that era remain watertight today. For a Peterborough home experiencing 785 mm of rain, 137 cm of snow, and 88 freeze-thaw cycles yearly, this durability means your roof will outlast multiple asphalt replacements and likely the next two owners.

Yes, when you calculate the full lifecycle cost. Asphalt requires replacement every 15–25 years; over a 50-year span, you'll buy it three to four times. Interlock metal roofing installs once and lasts 50-plus years with a transferable lifetime warranty, eliminating replacement costs and the recurring labor, disposal, and material inflation. Current regional promotions include interest-free payments for three months and savings of at least $2,499 on installation. While the initial price is higher, the math strongly favors metal when you add up the present-day cost of multiple asphalt cycles, waste disposal, and the disruption of repeated installations. You buy this roof once; your children may inherit it still performing.

Interlock metal roofing holds a UL 2218 Class 4 impact rating—the highest available—and the warranty even covers perforation from hailstones up to 1.5 inches. This non-combustible aluminum construction with a 30-year coating warranty resists damage that would crack or puncture asphalt or wood shingles. Many insurers recognize this durability and offer premium discounts for Class 4-rated roofs, sometimes recovering a portion of your installation cost over the policy term. Peterborough's climate includes variable spring and summer weather, and having a roof that shrugs off hail impact without repair needs gives you peace of mind and potential savings. Contact your insurer to confirm what discount applies to your policy once Interlock is installed.

Interlock metal roofing requires virtually no maintenance beyond occasional gutter cleaning. There is no granule shedding like asphalt, no curling or splitting like wood or aged shingles, and no algae growth like uncoated tile. The Alunar 70% PVDF coating, warranted 30 years, resists chalking and fading so you won't need to seal or repaint. CALGreen verification confirms reduced maintenance burden. In Peterborough's climate—about 785 mm of rain and 137 cm of snow per year—this means no moss removal, no leak repairs from age-related deterioration, and no seasonal inspections for storm damage. While asphalt requires inspection and spot repairs every few years, metal simply performs. This low-touch durability is especially valuable if you plan to stay long-term or transfer ownership; the next owner inherits a maintenance-free roof.

Interlock metal panels install over a solid deck and underlayment, and because the aluminum weighs only 0.41–0.59 lb per square foot, the roof can typically be installed directly over your existing asphalt shingles without tear-off. A solid deck (plywood or boards) with quality underlayment is essential for watertightness and to meet ICC-ES ESR-1790 building code compliance. The four-way interlocking design means each panel locks to its neighbors; installation time is faster than asphalt because panels cover a larger area per sheet. Peterborough's 137 cm annual snowfall and 88 freeze-thaw days demand proper fastening and sealing, which trained installers ensure. Interlock Metal Roofing (Ontario) Ltd. has served this region since 1998 and understands local conditions. The end result: a watertight, permanent roof installed in days, not weeks, with no landfill asphalt to haul away.

Yes. Interlock offers five profiles—Slate, Cedar Shingle, Shake, Standing Seam, and Mediterranean Tile—each with realistic texture and dimension. The aluminum panels are precision-embossed to capture the appearance of these high-end materials, and color options (including Aged Copper Penny with 0.55 solar reflectance) complement both modern and heritage homes. Unlike traditional slate or wood, which split and degrade within decades, or concrete tile that requires structural reinforcement, Interlock's 96% lighter-than-tile profiles deliver authentic aesthetics with non-combustible Class A fire rating available and a 30-year coating warranty. Peterborough's mix of Victorian, early-20th-century, and contemporary architecture means your choice of profile can enhance architectural character while adding performance asphalt or wood cannot match. The material looks as good in year 30 as year one.

Yes. Peterborough averages about 137 cm of snow, 785 mm of rain, roughly 88 freeze–thaw days a year, with peak wind gusts near 104 km/h. Interlock® aluminum roofing is wind-rated to 193+ km/h (120 mph), UL 2218 Class 4 impact-rated and Class A fire-rated, and its four-way interlocking panels shed snow and resist ice dams and freeze–thaw cracking — all backed by a lifetime limited, transferable warranty.