Gerard Shingles Company Overview

Gerard Roofing Technologies is headquartered in Brea, California. Gerard has been manufacturing stone-coated metal shingles for nearly 40 years. Gerard’s shingles are branded as Allmet in Asian and European markets. GRT also manufactures traditional standing-seam metal roof panels and is a Metals USA affiliate.

Gerard Shingles warranty

Gerard shingles include a 50-year-transferable Lifetime Limited Warranty. Gerard roof systems are weatherproof, wind-tested to 170 mph with a 120 mph warranty, carry a Class 4 Hail Warranty (up to 2.5″ diameter), and provide a Class “A” fire rating. The manufacturer asserts that “this is the last roof your home will ever need,” and Gerard stands behind that statement.

Gerard Shingles

Gerard Roofing offers 26-gauge metal shingles in several profiles to resemble traditional clay, tile, slate, and wooden shake roofs. A wide array of colors is created by bonding stone granules to primed and galvanized steel. Gerard’s US brands include Barrel Vault, Canyon Shake, Tile, Granite Ridge and Guardian. These are premium roofing systems designed to enhance any roof style in all climates.


Gerard metal roof systems cost more than premium asphalt products and less than clay, slate, and most cedar roof shingles. Ease of installation keeps labor costs down, too. Various discount offers and rebate programs are available. Consider these shingles as a lifetime investment.

Rating: 6 of 10.


Gerard’s metal shingles are easy to handle in a wide range of conditions, though more difficult to trim than asphalt. Walkable, lighter than clay or slate, and can be applied as a re-roof. No specialized tools required.

Rating: 7 out of 10


Gerard’s premium steel shingles can withstand harsh weather extremes in a variety of climates. The mixture of stone and steel provides a 9 out of 10 Rating.

Rating: 9 out of 10


With nearly every classic shingle profile available in over two dozen subtle, blended colors, Gerard’s metal shingles look perfect on nearly any architectural building style. Whether they are imitating clay, slate, tile or wood – shingles from Gerard provide top-line curb appeal for any home.

Rating: 9 of 10


Gerard Roofing Technologies provides the highest level coverage for roof systems. Gerard’s transferable warranty covers damage from the sun, earthquakes, hail, fire, and high.

Rating: 10 out of 10

Gerard’s four decades of best-quality roofing manufacturing provides peace of mind for the discriminating homeowner. This product is a Lifetime purchase.

Gerard Contact Info

Gerard Roofing Technologies
Corporate Headquarters
955 Columbia St.
Brea, CA 92821-2927

Phone: (714) 529-0407
Fax: (714) 529-6643
Toll-free: 800 23 ROOFS (800 237-6637)
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