The Interlock Blog
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Showing 13–24 of 42 articles
What Makes Interlock an Industry Leader in Premium Metal Roofing
"Industry leader" is a claim every roofer makes. Interlock backs it with specifics: corrosion-proof aircraft-grade aluminum, the Alunar® PVDF coating, a concealed four-way mechanical interlock warranted to 120 mph, an expected 50–75 year service life, and a transferable Lifetime Limited Warranty. The same system the U.S. National Science Foundation chose for Antarctica is what goes on your home.
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Interlock Metal Roofing Systems Are Strong
Interlock roofs are made from aircraft-grade aluminum — pound-for-pound stronger than steel, about one-third the weight, and rust-proof. Formed into a four-way interlocking panel and finished in Alunar® coating, the system is light enough to install over an existing roof yet rated UL 2218 Class 4 for impact.
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Common Asphalt Shingle Problems & What to Do
Asphalt shingles curl, crack, and blow off; lose the protective granules that shield them from UV; and grow moss, algae, and black streaks. Each problem shortens an already short (15–20 year) lifespan. A rust-proof aluminum roof eliminates all of them — no granules to lose, nothing to rot, and a 50+ year life.
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Understanding and Preventing Ice Dams: Expert Tips for Homeowners
Ice dams form when heat escaping into the attic melts roof snow, which refreezes at the cold eaves and traps water that backs up under the roof. The fixes are attic insulation and ventilation — and a smooth metal roof that sheds snow and ice before a dam can build.
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Why Aluminum Shingle Roofs Are Best for Coastal Homes
Salt air destroys ordinary roofs. Interlock’s aircraft-grade aluminum shingles can’t rust, are sealed in a marine-tough PVDF Alunar® coating, carry UL 2218 Class 4 impact resistance, and are Florida Building Code approved for High-Velocity Hurricane Zones — making them the best choice for coastal homes.
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What Is Drip Edge & Why It Matters for Metal Roofs
A drip edge is a metal flashing installed along the edges of a roof that directs runoff away from the fascia and into the gutters, instead of letting it wick back and rot the wood. On a metal roof it also helps lock the panel edges down against wind uplift and seals out water at the seams.
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Why an Interlock Metal Roof Is a Great Investment
A metal roof costs more upfront, but as an asset it pays back: one lifetime install instead of three asphalt re-roofs, up to 25% cooling savings, possible insurance discounts from its Class A fire and Class 4 impact ratings, higher resale value, and a transferable lifetime warranty.
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Skylights for Metal Roofs: Flashing, Mounting, and Maintenance
Yes — you can add skylights to a metal roof. Curb-mounted skylights are compatible with all Interlock Lifetime Metal Roofing Systems, integrating with the panels and flashing to stay watertight. They bring in natural light, can help with heating and ventilation, boost mood, and add value when installed properly.
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Can You Walk on a Metal Roof? Safety Tips
You can walk on a metal roof, but you usually shouldn’t. It’s slippery, you can dent panels or void coverage if you step wrong, and falls are the real danger. If walking is unavoidable, use fall protection and slip-resistant footwear and step in the right places — but for inspections and repairs, it’s safest to call a professional.
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Earth Day and Your Roof: The Real Sustainability Case for Metal
Earth Day began in 1970, sparked by a 1969 oil spill off Santa Barbara, and is now the world’s largest secular observance, marked by more than a billion people. Beyond the history, going green can save real money — and a recyclable, energy-efficient metal roof is one of the most durable green choices a homeowner can make.
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Quality Roof Materials: Why Components Matter
A roof is only as good as its weakest component. Interlock builds the whole system to last — aircraft-grade aluminum panels, stainless-steel fasteners, and cast-metal snow guards — so nothing rusts out before the roof does. It’s the quality a retired engineer noticed, and the reason the Empire State Building switched its windows to aluminum.
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Is It Cheaper to Put a Metal Roof or Shingles?
Asphalt shingles are cheaper to install today; a metal roof is cheaper to own. Shingles run roughly $120–$400 per square and last 15–20 years, so you replace them 2–3 times over the 50+ years one Interlock aluminum roof lasts — before counting energy savings and avoided repairs.
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