The Interlock Blog
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Showing 25–36 of 42 articles
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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Historic Metal Slate Roofing in Gloucester, MA
The 1750 Samuel Gilbert House in Gloucester, MA — a 275-year-old colonial landmark — was preserved with a Black Interlock Metal Slate roof in 2012. It delivers the authentic look of natural slate without the crushing weight, won’t crack or split, withstands New England’s coastal weather, and carries a 50-year transferable warranty.
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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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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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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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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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Roofing Wind Damage: 120 MPH Rated Metal Roofs
Interlock metal roofs are tested and warranted to resist 120 mph winds — Category 2 hurricane strength — and are Florida Building Code approved for High-Velocity Hurricane Zones. The secret is a four-way mechanical interlock with no exposed fasteners for wind to catch and peel.
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Explore Diverse Metal Roof Styles for Your Home
Metal roofing comes in three materials (aluminum, steel, copper) and many looks — slate, shake, shingle, tile, and standing seam. Aluminum lasts 30–70+ years and won’t rust, copper can last 100+, and Interlock pairs any of these styles with a four-way interlock, UL 2218 Class 4 impact rating, and a lifetime warranty.
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What Does 'Solar Friendly' Mean?
“Solar friendly” means a roof is built to work with solar panels — and to outlast them. Interlock qualifies on every count: 95% recycled aluminum, a 40–70+ year lifespan that beats a 25–30 year array, profiles engineered for panel mounting, and the ability to install over your existing roof.
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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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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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