Stone coated metal roofing is a metal roof panel finished with bonded stone granules, so it looks like shake, tile or shingle while keeping a metal base. King Roof Care works with metal roofing systems in Kirkland, Bothell, Everett, Issaquah and Redmond, WA. Its website does not specifically list stone coated products, so ask during a free roof assessment whether this material fits your home.
What Stone Coated Metal Roofing Is
Stone coated metal roofing is a metal roof panel, usually steel, with a surface layer of natural stone granules held in place by a bonded coating. The metal sheds water. The granules give the roof its texture and color.
Standard metal roofing shows its metal face instead. Standing seam panels, corrugated sheets and plain metal shingles rely on paint or a factory-applied metallic finish. You can read about one of those finishes in the guide to the Galvalume metal roof.
How Stone Coated Metal Panels Are Made
Stone coated metal panels are made in a factory, not on the roof. The general sequence is similar from one manufacturer to the next, but coatings, granule types and testing differ by brand and product line. The steps below are a general overview, not a description of any one manufacturer's process.
- Metal sheet is treated with a corrosion-resistant metallic coating.
- Panels are pressed into a profile, such as shake, tile or shingle.
- A base coat is applied to the panel surface.
- Stone granules are spread over the base coat and pressed into it.
- A clear or tinted top coat seals the granules.
- Panels are cured, inspected and packed with matching trim and accessories.
Shake, Tile and Shingle Profiles and Color Choices
Stone coated metal roofing comes in profiles that imitate other roofs. The common families are wood shake, barrel or flat tile, and dimensional shingle. Within each family, manufacturers offer different textures and edge details.
Color comes from the granules, and many lines offer blended colors rather than one flat shade. Look at physical samples outdoors in daylight. Hold them next to your siding, trim and gutters, because small samples can look very different on a whole roof.
Stone Coated Metal vs. Exposed Metal vs. Asphalt Shingle
Stone coated metal roofing sits between exposed metal panels and asphalt shingles in both look and construction. The comparison below is qualitative. Performance figures such as lifespan, weight or wind ratings depend on the specific product, so request them in writing for any line you are considering.
| Feature | Stone coated metal | Exposed metal (standing seam, corrugated) | Asphalt / composition shingle |
|---|---|---|---|
| Surface | Stone granules bonded over a metal panel | Painted or metallic-coated metal face | Granules on an asphalt-based shingle |
| Appearance | Imitates shake, tile or shingle | Visible seams, ribs or clean metal lines | Flat or dimensional shingle look |
| Base material | Metal panel | Metal panel | Asphalt shingle |
| What to check during an inspection | Granule adhesion, panel fastening, flashing and trim details | Seams, fasteners, sealant and signs of corrosion | Granule loss, lifted or damaged shingles, flashing |
| Documents to request | Product data sheet and installation instructions | Panel and finish documentation | Shingle line specifications |
What Stone Coated Metal Roofing Costs
The price of stone coated metal roofing depends on the specific roof and product, so this guide does not quote a figure. National averages for other roofing work would not tell you what a stone coated metal roof on your home will cost.
- Roof size, pitch and number of planes, hips and valleys
- Number of penetrations such as chimneys, vents and skylights
- Condition of the roof deck once the old roofing is removed
- Tear-off and haul-away of the existing roof
- The product line, profile and trim accessories chosen
- Underlayment, flashing and ridge details in the scope
What to Ask and Compare in a Stone Coated Metal Roof Estimate
A stone coated metal roof estimate is only useful if you can compare it line by line with another one. King Roof Care provides free, no-obligation roof assessments and a written estimate with the exact scope and materials before any work starts. Use the questions below with any contractor you are considering.
- Which manufacturer and product line is proposed, and can I see the data sheet?
- Has the crew installed this specific stone coated product before, and can you show examples?
- Is the existing roof being torn off, and how will deck damage be priced if it is found?
- Which underlayment is included, and where does ice-and-water protection go?
- How are valleys, walls, chimneys, skylights and vents flashed with this profile?
- Are ridge caps, rake trim and accessories from the same product line?
- What happens to gutters, and are they inspected as part of the job?
- Is your Washington contractor registration current, and where can I verify it?
- Who is my contact during the job, and how will changes to scope be approved in writing?
Mistakes That Can Cause Rework on a Stone Coated Metal Roof
Stone coated metal roofing can need rework when the details around the panels get less attention than the panels themselves. The points below are general guidance to discuss with your installer. They do not cover every risk, and they do not describe any one company's results.
- Choosing a profile from photos without seeing physical samples on site
- Skipping a deck inspection after tear-off, which can hide damaged sheathing under new panels
- Treating flashing at chimneys, walls and skylights as an afterthought
- Mixing trim from a different product line or finish
- Walking on panels without following the manufacturer's foot-traffic guidance
- Leaving gutter problems unaddressed, so water still overflows at the eaves
King Roof Care's Roof Replacement Steps and Metal Roof Repairs
King Roof Care publishes a roof replacement sequence on its website. It describes roof replacement in general, not stone coated metal specifically, so ask how each step would apply to the product proposed for your home.
The published sequence starts with an on-site inspection of the roof, the attic and the ventilation. A written estimate follows, then a detailed pre-construction meeting. During the work, landscaping, decks and patios are covered with protective tarps.
King Roof Care is a registered Washington construction contractor, L&I registration KINGRRC782QA. You can confirm it through the Washington L&I verification tool. Confirm permit needs with your city before work starts.