Stone-coated steel roofing is made of pressed steel panels covered with a layer of stone granules bonded in acrylic, shaped to look like wood shakes, asphalt shingles, slate or clay tile. It gives you a textured, non-glossy roof with the strength and light weight of steel. It costs more than asphalt but less than clay tile or standing seam copper, and it is a popular replacement for wood shake in wildfire areas and for heavy concrete tile on homes that cannot carry the weight.
What stone-coated steel is
Each panel starts as coated steel, either Galvalume or galvanized, about 26 gauge. The steel is pressed into a profile such as a shake, a shingle, a slate or a barrel tile. The face is then coated with an acrylic base, covered with ceramic-coated stone granules and sealed with a clear acrylic overglaze. The result looks like a mineral surface rather than paint, with no shine and a natural variation in color.
Panels are typically about four feet wide and a bit over a foot tall, so each one covers the area of several individual shakes or tiles. Edges overlap and interlock with the neighboring panels. Fasteners are driven through a flange at the front or side of the panel and hidden by the next course, or in some systems driven through the face with color-matched screws. The hidden-fastener versions are the ones to look for on a house.
Stone-coated steel is a cousin of painted metal shingles and metal tile. The core idea is the same, a stamped steel module that mimics a traditional material, but the stone surface gives it a softer look and a different aging pattern than paint.
How it is installed
There are two ways to install stone-coated steel, and your bid should say which one you are getting.
Batten systems
Horizontal wood battens, often with vertical counter-battens underneath, are fastened to the deck over the underlayment. Panels are then screwed to the battens. This raises the roof surface and creates an air space under the panels that lets heat escape and dries out any moisture. Batten systems are also the usual way to go over an existing layer of shingles, since the battens bridge the old roof.
Direct-to-deck systems
Panels are fastened straight to the roof deck over underlayment, with no battens. This keeps the roof lower in profile and uses less lumber. It is simpler on roofs with many angles and fits where a raised roof edge would look wrong against existing trim.
Either way, the sequence is familiar: tear-off or inspection, deck repair, underlayment, drip edge and starter, then courses from eave to ridge with hip, ridge and wall trim pieces made for the system. Panels are cut with shears or a nibbler, and raw edges at hips and valleys are bent down or covered with trim so the bare steel is not exposed.
Where stone-coated steel fits
Roof pitch. Most stone-coated profiles are rated for roughly 3:12 and steeper, with some tile profiles needing more. Confirm the minimum slope for the exact profile in writing. Low-slope porches usually get a different product.
Climate. Stone-coated steel is at home in hot, sunny regions, where a batten air space helps keep attic temperatures down, and in hail country, where many products carry a UL 2218 Class 4 impact rating. The Class A fire rating and the shake look make it a common swap for real wood shakes in wildfire-prone areas. In snow regions the rough surface holds snow in place rather than shedding it all at once, which many homeowners like, though heavy loads should still be planned for with your installer.
House style. The shake profile fits Craftsman, ranch and mountain homes. The tile profile suits Mediterranean, Spanish and Southwestern designs. The shingle and slate profiles work on colonials and traditional two-story homes. Because the surface has no gloss, it tends to blend into established neighborhoods and satisfy homeowner association rules.
Pros and cons
Pros
- Natural, non-glossy look in shake, shingle, slate and tile shapes
- Light weight compared with clay or concrete tile
- Class 4 impact and Class A fire ratings on many products
- Batten systems add an insulating air space and often go over old shingles
- Quieter in rain than smooth metal
- Long life for the steel core
Cons
- Stone surface can shed granules and fade over decades
- Panels dent if walked on in the wrong spots
- Fewer trained installers than for asphalt or standing seam
- Cut edges need careful finishing to avoid rust
- Batten systems raise the roof edge, which can complicate trim and gutters
Approximate 2026 cost
As a broad national range, stone-coated steel runs roughly $10 to $18 per square foot installed in 2026, or about $1,000 to $1,800 per roofing square. Direct-to-deck shingle profiles on a simple roof sit at the low end. Batten-mounted tile profiles on a steep, complex roof sit at the high end. It generally costs more than asphalt shingles and about the same as or slightly less than painted standing seam.
These are approximate figures, not quotes. Real prices vary by region, roof pitch and complexity, batten or direct installation, tear-off, deck repairs, the profile you choose and the time of year, and steel prices move. Three written bids are the only way to know your number. See the metal roof cost guide for a full breakdown.
What to ask the installer
Stone-coated steel is a manufactured system, so the installer should be able to tell you exactly what they are proposing and show you where they learned to install it.
Get the license number where your state requires one, proof of liability and workers compensation insurance, and a written contract that names the product, profile, color, installation method, underlayment, trim and payment schedule. Make sure a permit is pulled if required.
Common mistakes and red flags
Stone-coated steel is also easy to damage after installation by people who do not know it. Tell anyone working on your roof, from the chimney sweep to the solar crew, that panels must be stepped on where they are supported, usually the lower front edge over a batten. Our maintenance guide explains how to keep an eye on the roof from the ground.
Related guides
Compare the painted alternative in metal shingles roofing and the deeper profiles in metal shake and slate roofing. If the tile look is what you want, read metal tile roofing. Find installers who list this style in the stone-coated steel directory or search by state at Find a Metal Roofer.
Frequently asked questions
How long does a stone-coated steel roof last?
The steel core is the same coated steel used in other metal roofs, so the panel itself commonly lasts 40 to 60 years or more. The stone and acrylic surface is what ages. Over decades it can lose some granules and fade, especially in intense sun. Manufacturer warranties on the surface vary widely in length and in what they cover, so read the actual terms rather than the headline number.
Will the stones fall off?
A small amount of loose granule shedding right after installation is normal and comes from the cutting and handling of panels. Steady granule loss years later is not normal and is usually a warranty matter. Quality panels bond the granules in an acrylic base coat and seal them with a clear acrylic overglaze. Ask what the warranty says about granule loss and fading specifically.
Is stone-coated steel quieter than other metal roofs?
The stone surface and the air space under batten-mounted panels both dampen sound, so stone-coated steel is one of the quieter metal roofs in rain. Over a solid deck with underlayment and an insulated attic, any metal roof is close to asphalt shingles in noise. The loud metal roofs people remember are bare panels on open-frame barns.
Is stone-coated steel good for hail and wildfire?
Many stone-coated steel products carry a UL 2218 Class 4 impact rating, the highest class, and a UL 790 Class A fire rating. Large hail can still dent the steel under the stone, though the texture hides small dents well. For wildfire zones, a Class A roof with closed eaves and ember-resistant vents is a strong combination, and stone-coated steel is a common replacement for wood shake in those areas.
Can stone-coated steel go over my existing shingles?
Often, yes. Batten-mounted systems are frequently installed over one layer of existing shingles where code allows, because the battens create a level base above the old roof. Direct-to-deck systems may also be approved over a flat single layer. The installer still needs to inspect the deck from the attic and at the eaves. Two existing layers normally require a tear-off.