Metal Roofing in Shediac, New Brunswick

Metal roofs shed snow and ice more effectively than asphalt because the smooth, hard surface prevents water from re-freezing at the eaves—a major cause of ice dams. Shediac receives about 185 cm of snow annually across roughly 83 freeze-thaw cycles, creating ideal conditions for ice dam formation on traditional roofs. Interlock's four-way interlocking aluminum panels are warranted to 120 mph wind resistance, so they hold firmly during freeze-thaw stress when other materials expand and contract unpredictably. The lightweight design (Slate at 0.41 lb/sq ft) also means snow loads pose no structural concern, and panels can be installed over your existing roof without reinforcement.

No. Aluminum's crystalline structure and the 3105-H24 alloy used in Interlock panels are specifically engineered to withstand repeated expansion and contraction without cracking, warping, or becoming brittle. With about 83 freeze-thaw days per year in Shediac and average rainfall near 991 mm, traditional materials like asphalt, wood, and concrete tile experience significant stress: water enters micro-cracks, freezes, expands, and deepens damage. Aluminum oxide—the protective layer that forms naturally on the surface—actually self-heals when scratched, so freeze-thaw cycling doesn't compromise the coating's ability to protect against corrosion over decades.

Aluminum cannot rust because it contains no iron; instead, it develops a thin, invisible oxide layer that protects the metal and self-heals when damaged. Steel roofing rusts visibly because iron oxidizes when exposed to moisture—a real risk in Shediac's 991 mm annual rainfall and coastal-influenced humidity. Interlock panels use roofing-grade 3105-H24 and 3003-H24 aluminum alloy (ASTM B209) and are coated on both sides with Alunar 70% PVDF fluorocarbon finish (30-year coating warranty), so even the underside resists corrosion. The company has installed panels from coastal salt-air homes to an Antarctic research station, proving durability in the harshest wet and cold environments.

Yes. Interlock's four-way interlocking aluminum panels are warranted to resist wind speeds up to 120 mph (193 km/h), and Shediac's typical wind gusts reach about 125 km/h—well within that safety margin. The four-way mechanical interlock (not fasteners or adhesive alone) means each panel grips its neighbors, distributing wind load across the entire roof rather than concentrating stress on individual attachment points. This engineered redundancy is why the warranty covers impact and wind performance: even in extreme gust events, the panels remain secure. Ice-laden roofs in freeze-thaw zones like Shediac especially benefit because weight plus wind creates compounded stress that lesser fastening systems cannot handle.

The four-way interlocking system creates multiple overlapping pathways that direct water downward and outward; water cannot pond or find gaps to infiltrate. Shediac averages about 991 mm of rain annually, distributed across roughly 185 days, so the roof must shed both steady rain and sudden heavy downpours. Each profile—Slate, Cedar Shingle, Shake, Tile, Standing Seam—is tested under simulated rainfall at multiple angles as part of ICC-ES evaluation (ESR-1790, reissued 2025). When installed to specification over a solid deck with standard underlayment, the combination of mechanical interlock, slope, and hard aluminum surface prevents water from finding entry points where asphalt shingles or wood shakes might allow seepage.

Many insurers recognize the UL 2218 Class 4 impact rating (the highest available) and may offer premium discounts because these roofs resist hail damage that would require costly claims. Interlock's warranty even covers perforation from hailstones up to 1.5 inches—a level of impact protection that uncoated asphalt or wood simply cannot match. In Shediac's climate of frequent freeze-thaw cycles and occasional severe weather, the combination of high impact resistance and a 30-year coating warranty significantly reduces the likelihood of water intrusion from hail damage. Contact your insurance agent with the UL 2218 Class 4 rating and the warranty details; many regional carriers offer tangible savings for verified, high-performance roofing systems.

Metal roofs require almost no maintenance beyond occasional visual inspection and gutter cleaning—asphalt requires regular inspections for granule loss and early replacement once moss or algae colonizes (common in Shediac's 2813 annual sunshine hours and wet climate). Interlock's hard aluminum surface and top-and-bottom Alunar coating (30-year warranty against chalking and fading) resist the biological growth and UV damage that drives asphalt replacement cycles. Wood shakes split, curl, and require chemical treatment; concrete or clay tile cracks in freeze-thaw stress. Interlock's CALGreen-verified design is rated for reduced maintenance—meaning fewer repairs, no tear-offs to landfill, and predictable costs for decades.

The Guardian warranty is a lifetime limited, non-prorated material warranty for the original owner—covering rusting, rotting, splitting, cracking, curling, and loss of impact resistance. It is transferable once, giving the next owner a full 50 years from completion, adding significant resale value. Unlike prorated warranties (which decline year by year), this warranty remains at full strength as long as you own the home. In Shediac, where 185 cm of annual snow, 991 mm rain, and 83 freeze-thaw days create intense stress on roofing, the non-prorated protection means your investment is protected against the exact failure modes that plague asphalt (curling, cracking), wood (splitting, rotting), and tile (cracking in freeze-thaw cycles).

No structural reinforcement is needed. Interlock's Slate profile weighs just 0.41 lb/sq ft—about 96% lighter than concrete or clay tile—so it installs directly over most existing roofs without engineering upgrades or costly frame modifications. Traditional tile weighs 10–15 lb/sq ft; a typical asphalt roof weighs 2–4 lb/sq ft; Interlock's lightest profile is lighter than asphalt. In Shediac, where homes experience about 185 cm of annual snow loading, the reduced roof weight actually improves structural safety by lowering the total load your frame must carry. This lightweight advantage also means faster installation, lower labor costs, and the ability to install over your existing roof in most cases—eliminating the expense and landfill waste of a full tear-off.

Maritime Metal Roofing Ltd. is your local installer, serving the greater Shediac region since 2007 with expertise in Interlock's full range of profiles and the specific challenges of the Southeast Atlantic climate. They understand Shediac's 991 mm annual rainfall, ice dams, and coastal humidity—conditions that require precise underlayment and sealing. Installation timeline depends on roof size and weather, but because aluminum panels install quickly (no tar, no heavy materials to stage on the roof, no curing time), most residential jobs complete within 1–3 days. The current regional promotion offers interest-free payments for 3 months and savings of at least $2499 on installation. Contact Maritime Metal Roofing for a site visit and quote tailored to your home's needs.