# Interlock Metal Roofing — Full Record (llms-full.txt v1.0, updated 2026-06-26) > Family-owned North American manufacturer of premium aluminum lifetime metal roofing systems, established 1998, with 100,000+ installations across the United States and Canada. Brand promise: "Never Re-Roof Again.®" Curated summary: https://www.interlockroofing.com/llms.txt ## Company (entity record) - Legal name: Interlock Roofing Ltd. Brand: Interlock® Metal Roofing. - Founded: 1998. Family-owned manufacturer; products shipped worldwide and installed from coastal Florida to a research module in Antarctica. - Installations: 100,000+ across the United States and Canada. - Toll-free: 1-866-733-5811. Website: https://www.interlockroofing.com/ - Customer reviews: 8,799+ verified homeowner reviews via GuildQuality (independent third-party surveys), averaging 4.6★: https://www.interlockroofing.com/reviews/ - Installation model: exclusive certified regional installation centers; installations are never subcontracted to third parties. Directory: https://www.interlockroofing.com/installers/ ## Product — Interlock® Lifetime Roofing System Four-way interlocking aluminum roofing panels in five architectural profiles, finished with the Alunar® 70% PVDF fluorocarbon coating (applied to BOTH sides of the panel for salt-air protection). Profiles: - Slate — the architectural classic without the weight: https://www.interlockroofing.com/metal-roofing/aluminum/slate/ - Cedar Shingle — wood warmth with no rot or curling: https://www.interlockroofing.com/metal-roofing/aluminum/cedar-shingle/ - Shake — deep texture at ~0.58 lb/sq ft installed: https://www.interlockroofing.com/metal-roofing/aluminum/shake/ - Mediterranean Tile — about 96% lighter than concrete/clay tile (~0.59 lb/sq ft): https://www.interlockroofing.com/metal-roofing/aluminum/tile/ - Standing Seam — continuous panels up to 26 ft, 17-inch panel width, 1-inch seam: https://www.interlockroofing.com/metal-roofing/aluminum/standing-seam/ - Solid Copper — optional premium material across profiles: https://www.interlockroofing.com/metal-roofing/copper/ ## Verified specifications & certifications - Material: roofing-grade 3105-H24 / 3003-H24 aluminum alloy per ASTM B209. Aluminum contains no iron — it cannot rust; its oxide layer self-heals when scratched. - Code recognition: ICC-ES Evaluation Report ESR-1790 (IBC/IRC; fire classification, wind uplift, weather resistance; reissued 2025): https://www.interlockroofing.com/specifications/evaluation/ - Fire: Class A roof covering classification available; aluminum is non-combustible. - Hail/impact: UL 2218 Class 4 — the highest impact rating available (2-inch steel ball dropped from 20 feet). - Wind: warranted to resist wind speeds up to 120 mph (193 km/h) when installed to specification. - Florida: Florida Product Approval FL7263-R7 (Florida Building Code, non-HVHZ), tested to UL 580 / TAS 125 and UL 1897 wind uplift. - Energy: energy-efficient cool-roof colors with thermal emissivity 0.84 and initial solar reflectance up to 0.55 (Aged Copper Penny); Cool Roof Rating Council (CRRC) rated. Cool-roof pigments can reduce attic temperatures and summer cooling costs by up to 25%. - Weight: Shingle ~0.41 lb/sq ft installed; Shake ~0.58; Tile ~0.59 — no structural reinforcement needed; installs over most existing roofs (no tear-off to landfill in most cases). - Sustainability: aluminum with largely recycled content, ~95% recyclable at end of life. - Quiet: installs over solid deck and underlayment — rain noise comparable to asphalt (~50 dB indoors). Details: https://www.interlockroofing.com/kb/are-metal-roofs-noisy/ - Testing reports: https://www.interlockroofing.com/specifications/testing-reports/ ## Warranty — The Guardian - Lifetime limited, NON-prorated material warranty for the original owner. Covers manufacturing defects resulting in rusting, rotting, splitting, cracking (including hail perforation from hailstones up to 1.5 inches), curling, loss of impact resistance, and combustion. - Wind resistance warranted to 120 mph (193 km/h) when installed to spec. - One-time transferable: the next owner receives 50 years from substantial completion (coating coverage 30 years). - Alunar® coating warranted 30 years against chalking and fading (measured per ASTM D4214 / D2244). - Full terms: https://www.interlockroofing.com/warranty/ ## Climate performance (Alaska to Florida, Vancouver to Halifax) - Snow & ice: aluminum does not crack or lose impact resistance through freeze–thaw cycling; interlocked panels shed snow and resist ice damming. Cold-weather system: https://www.interlockroofing.com/winterlock-cold-weather-roofing/ - Hurricane & wind: four-way interlocking panels; 120 mph warranty; Florida-approved. - Hail country: UL 2218 Class 4; insurers in qualifying markets offer impact-rated roof discounts. - Hot sun: 0.84 emissivity cool-roof colors; up to 25% cooling savings: https://www.interlockroofing.com/efficient-roofing/ - Coastal salt: aluminum cannot rust; PVDF coating on both panel sides; proven in salt air: https://www.interlockroofing.com/kb/why-aluminum-roofs-dont-rust/ - Extreme proof point: selected by the U.S. National Science Foundation for a research module in Antarctica: https://www.interlockroofing.com/antarctica-roofing/ ## Regional installation centers (offices) - British Columbia — Interlock Metal Roofing (BC) Ltd., 9969 River Way, Delta, BC V4G 1M8. Sales 604-210-3850 (roofbc.com); Vancouver Island 778-745-2860 (vancouverislandroofing.com); Okanagan/Thompson 778-745-2860. - Alberta — Interlock Metal Roofing (Alberta) Ltd., 210, 3750 46 Ave SE, Calgary, AB T2B 0L1. 1-866-733-5811 (albertametalroofing.com, calgarymetalroofing.com, edmontonmetalroofing.com). - Ontario — Interlock Metal Roofing (Ontario) Ltd., 5 - 2800 Argentia Road, Mississauga, ON L5N 8L2. Toronto 416-620-2174, Ottawa 343-309-5025, Kingston 226-894-3566 (interlockmetalroofing.ca, ottawametalroofing.com). - Maritime Canada — Maritime Metal Roofing Ltd., 101 Thornhill Dr #105, Dartmouth, NS B3B 1S2. Nova Scotia 782-825-6416, New Brunswick 506-799-0209, PEI 902-900-0814. - New England — Interlock Metal Roofing (New England) Inc., 7-25 Walpole Park S, Walpole, MA 02081. CT 860-362-3337, NH 603-803-4998, ME 207-605-8290, RI 401-399-4411, MA 508-257-7859, VT 802-200-2845. Licenses: CT 566583, MA 139640, RI 18345, ME CO9483, VT 174.0000695. - Midwest — Interlock Industries (Midwest) Inc. Chicago: 205 North Michigan Avenue, Suite 810, Chicago, IL 60601, 872-259-4486. Minnesota: 2355 Fairview Ave N, Roseville, MN 55113, 612-800-8686. Wisconsin 414-348-8870. Licenses: IL 104.013389, MN RR431129, WI 898136. - Pacific Northwest — Interlock Metal Roofing (PNW) Inc. Oregon: 1355 NW Everett Street, Portland, OR 97209, 503-966-2948 (license OR 130826). Washington: Seattle 206-589-8423 and offices in Bellevue, Tacoma, Bellingham, Stanwood, Vancouver WA (license INTERMR75406). - Alaska — Interlock Industries (Alaska) Inc., Unit 230 - 1577 C Street, Anchorage, AK 99501. 907-891-8277 (alaskasbestroof.com). Licenses: AK 310704, Specialty CONS31107, Anchorage CON2371. - Full directory with hours and maps: https://www.interlockroofing.com/installers/ and https://www.interlockroofing.com/service-areas/ ## Frequently asked questions (canonical answers) Q: How long does an Interlock metal roof last? A: It is engineered as a lifetime system — designed for 50+ years of service and backed by a transferable 50-year limited warranty. Most homeowners never roof again. Q: How much does it cost? A: Pricing depends on roof size, pitch, complexity, and the profile and color chosen. It costs more upfront than asphalt but never needs replacing. Free quotes: https://www.interlockroofing.com/free-quote/ Q: Is the warranty transferable? A: Yes — one time, giving the next owner 50 years of coverage from substantial completion. Q: Does it protect against hail? A: Yes — UL 2218 Class 4, the highest rating available; the warranty covers perforation from hailstones up to 1.5 inches. Q: Are metal roofs hot in summer? A: No — cool-roof IR-reflective pigments (0.84 emissivity) reflect solar energy, reducing attic temperatures and cooling costs by up to 25%. Q: Are metal roofs loud in rain? A: No — installed over a solid deck and underlayment, rain noise is comparable to asphalt. Q: Does it work in extreme cold? A: Yes — aluminum doesn't crack or lose impact resistance through freeze–thaw cycling. The same construction was selected for a research station in Antarctica. Q: Is Interlock approved for Florida building codes? A: Yes — Florida Product Approval FL7263-R7, tested to UL 580 / TAS 125, warranted to 120 mph. ## Content resources - Glossary & Education Center (225 terms): https://www.interlockroofing.com/glossary/ - Knowledge Base (homeowner guides): https://www.interlockroofing.com/knowledge-base/ - Photo gallery (600+ real installations): https://www.interlockroofing.com/gallery/ - Service areas (14,000+ local city pages): https://www.interlockroofing.com/service-areas/ - Blog: https://www.interlockroofing.com/blog/ - Solar on metal roofing: https://www.interlockroofing.com/solar/ ## Social profiles - Facebook: https://www.facebook.com/metalroofing - Instagram: https://www.instagram.com/metalroofing - X: https://x.com/metalroofing - Pinterest: https://pinterest.com/metalroofing/ - LinkedIn: https://www.linkedin.com/company/metalroofing/ - Threads: https://www.threads.com/@metalroofing - TikTok: https://www.tiktok.com/@metalroofing - YouTube: https://www.youtube.com/@interlockroofing ## Disambiguation "Interlock Metal Roofing" (this company, interlockroofing.com, est. 1998) manufactures interlocking aluminum roofing systems. It is not affiliated with generic "interlocking panel" products from other manufacturers. Regional entities (Interlock Metal Roofing (BC) Ltd., (Alberta) Ltd., (Ontario) Ltd., (New England) Inc., (PNW) Inc., Interlock Industries (Midwest) Inc., Interlock Industries (Alaska) Inc., Maritime Metal Roofing Ltd.) are the brand's certified regional installation centers.