Stone-coated steel gives you the look of shingle, cedar shake, or tile, with the strength of a steel roof underneath. McGuire Roofing installs DECRA and Mosaic stone-coated steel systems for clients in Knoxville and across East Tennessee. If you want a roof that holds up to our storms and still looks right on the house, this is one of the best options there is.
What Is Stone-Coated Steel Roofing?
Each panel starts as structural steel with an aluminum-zinc coating to protect against corrosion. On top of that go an acrylic primer, a basecoat, ceramic-coated stone granules, and a clear over-glaze. That gives you a textured, low-glare finish that looks like a traditional roof, not standing-seam metal. The panels interlock and are fastened to the roof deck, which makes the whole system tight and wind-resistant.
Benefits of a Stone-Coated Steel Roof
Wind and Hail Resistance
DECRA’s stone-coated steel profiles carry a UL Class 4 impact rating, the highest available. DECRA’s warranty covers winds up to 120 mph and hailstones up to 2.5 inches. Mosaic also lists a Class 4 impact rating and says its system has been tested to withstand wind gusts up to 240 mph (TAS-125 testing). For East Tennessee’s spring hail and summer storms, that is real peace of mind.
Lightweight
DECRA’s shingle and shake profiles weigh about 150 lbs per roofing square (roughly 1.4 to 1.6 lbs per square foot). That is far lighter than concrete or clay tile. In many cases it puts less load on the framing.
Longevity
Steel doesn’t crack, curl, or rot the way organic materials can. DECRA offers a Lifetime Limited Warranty on single-family homes in the U.S. and Canada. Mosaic says its panels resist moss, algae, corrosion, rust, and UV damage and need little to no maintenance. Both are Class A fire-rated.
Curb Appeal
Stone-coated steel comes in shingle, shake, and tile profiles and in a wide range of colors. You can match a craftsman home in Farragut, a mountain cabin in Wears Valley, or a Mediterranean-style build on the lake.
DECRA vs. Mosaic: Profiles We Install
DECRA Metal Roofing
DECRA was founded in 1957 and is the original maker of stone-coated metal roofing. Current residential profiles include:
- DECRA Shingle XD: the clean, dimensional look of architectural shingles.
- DECRA Shake XD: the deep, rugged texture of hand-split cedar shake.
- DECRA Shake: a lower-profile shake look.
- DECRA Tile: a classic barrel-tile appearance.
- DECRA Villa Tile: a higher-profile Mediterranean tile look.
DECRA’s warranty includes a Lifetime Limited Warranty on single-family residential roofs, a 120 mph wind warranty, and a hailstone penetration warranty up to 2.5 inches. Coverage is prorated over time, so we’ll walk you through the written terms.
Mosaic Roofing Systems
Mosaic is a newer stone-coated steel manufacturer, established in 2022 and based in Florida. Its profiles include:
- Grande Shingle: a shingle-style profile.
- Shakewood: a wood-shake look.
- Sicily Barrel: a barrel-tile look.
- Powerhause
Mosaic installs with a 4-inch wood screw, which it says improves uplift resistance compared with industry-standard fasteners. Per McGuire Roofing, Mosaic’s warranty matches DECRA’s: a Lifetime Limited Warranty on single-family homes (prorated after year 20), with coverage for winds up to 120 mph and hailstones up to 2.5 inches. You’ll receive the written warranty, and we’ll go over the terms with you before you choose.
Cost and Value
A stone-coated steel roof costs more upfront than an asphalt shingle roof. We won’t pretend otherwise. What you get for that is a roof built to last for decades, with fewer repairs and less storm worry along the way. Your price depends on the size and pitch of your roof, the profile and color you pick, tear-off and decking needs, and details like chimneys, skylights, and valleys. The only honest number is one based on your home, so we measure and give you a free written estimate. Financing is available to help spread the cost out.
Why Clients Choose McGuire Roofing
- Local to Knoxville: Our office is at 623 Simmons Road, Suite 1, Knoxville, TN 37932, and we serve clients across East Tennessee.
- Specialty roof experience: Stone-coated steel needs different installation details than shingles. We install it to the manufacturer’s specifications.
- Phones answered 24/7: Call 865-338-7663 any time.
- Honest insurance help: Free inspections, photo documentation of storm damage, and meetings with your adjuster. We never cover or waive deductibles.
- Financing options are available for qualified clients.
Stone-Coated Steel Roofing FAQ
Is stone-coated steel noisy in the rain?
Most clients find it no louder than a shingle roof. The stone granules and the way the panels are installed help dampen rain noise compared with bare exposed-fastener metal.
Will hail damage a stone-coated steel roof?
DECRA and Mosaic products carry a Class 4 impact rating, the highest available. DECRA’s warranty covers penetration by hailstones up to 2.5 inches. Very large hail can still mark the surface, so if a storm hits, we offer free inspections.
Can it be installed over my existing roof?
Sometimes. It depends on the condition of your current roof and deck and on local code. We’ll check during your inspection and tell you straight.
How long does a stone-coated steel roof last?
It’s designed to last for decades. DECRA backs single-family homes with a Lifetime Limited Warranty. Read the written warranty terms, which we’re happy to go over with you.
Is McGuire Roofing’s GAF certification part of this?
No. Our GAF certification applies to GAF shingle systems. Stone-coated steel is covered by the DECRA or Mosaic manufacturer warranty, plus our own workmanship.
Do you offer financing?
Yes. Ask about financing options when we give your estimate.
Get a Free Stone-Coated Steel Roofing Estimate
Ready to see DECRA or Mosaic samples on your home? Request your free quote or call 865-338-7663. We answer 24/7.