The Interlock Blog
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Showing 25–36 of 40 articles
Maximizing Energy Efficiency: The Benefits of Metal Roofs
Interlock's reflective aluminum roofing can cut cooling costs by up to 25% by bouncing the sun's heat away instead of absorbing it. Paired with a lifetime warranty, Class A fire rating, and 120 mph wind resistance, it's an energy upgrade that protects your home for decades.
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Why Proper Roof Installation Is Crucial for Your Home
An Interlock roof is an interlocking system of components — panels, flashings, valleys, backpans, collars, drip caps, underlayment, and specialty fasteners — not a stack of parts. It’s engineered to be installed correctly by trained, certified Interlock installers, which is why it isn’t a DIY product and why expert installation protects both performance and the lifetime warranty.
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15 Most Popular Roof Types and Their Characteristics
Roof type refers to the shape of the roof — gable, hip, gambrel, mansard, flat, and a dozen more — and each has its own strengths in cost, weather resistance, attic space, and solar suitability. Whatever shape your home has, an Interlock metal roof can be formed to fit it.
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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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Minimum Roof Pitch for a Metal Roof
The minimum pitch for all Interlock Metal Roofing Systems is 3:12 — meaning the roof rises 3 inches for every 12 inches of horizontal run. Adequate slope lets water run off quickly and prevents pooling and leaks; for roofs shallower than 3:12, a membrane roofing system is recommended instead.
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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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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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Clay or Concrete Tile Roof Problems
Clay and concrete tile roofs are beautiful and long-lasting, but they crack, slide, and chip, grow moss and stains, and sit on underlayment that fails decades before the tiles — a repair that means removing the entire roof. They’re also very heavy. An aluminum Mediterranean Tile gives the look at ~96% less weight.
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What? You Think Roofs Last Forever?
No roof lasts forever — weather wears every roof out eventually. But the gap is enormous: asphalt shingles last 15–20 years (often less), while an Interlock aluminum roof is built to last 50+. Choosing the right replacement material decides whether you re-roof once or three times.
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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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What Is Cool Roofing? CRRC Ratings & Benefits
A “cool roof” reflects the sun’s heat instead of absorbing it, lowering cooling bills and indoor temperatures. Interlock’s energy-efficient Alunar® finish reflects up to 55% of solar energy (reflectance 0.25–0.55) with a high 0.84 thermal emittance — and it works in any color, not just white.
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The Effects of Snow on Your Roof
Snow damages roofs by weight, not depth — and a foot of wet snow can outweigh several feet of powder. An Interlock aluminum roof adds almost no load of its own (~0.41 psf) and its smooth, four-way-interlocked surface sheds snow; one owner reported a 95% drop in roof snow load after switching.
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