Materials / Stone-Coated Steel
Stone-Coated Steel
UL 2218 Class 4Steel panels with an adhered stone-granule surface, formed into tile, shake, or shingle profiles. Combines the impact and wind performance of steel with the appearance of tile or wood at a fraction of the weight.
Category family
metal
Typical lifespan
40–70 years
Typical wind resistance
rated assemblies commonly to 120 mph or higher
Typical fire rating
Class A
Max impact class
UL 2218 Class 4Weight per square
120–160 lbs
Cost band
$$$
Slope suitability
steep
Typical warranty
40–50 years
Pros
- UL 2218 Class 4 impact resistance on many products
- lightweight versus clay or concrete tile
- non-combustible Class A assemblies
- tile or shake appearance
Cons
- higher cost than exposed-fastener panels
- requires trained installers
- fewer color changes after install
Colorado notes
- hail_performance: Class 4 stone-coated steel is a popular impact-resistant tile alternative in the Colorado hail belt
- altitude_uv: stone granules shield the coating from high-altitude UV
Manufacturers
Named products
Related guides
Sources
- metalroofing.com verified 2026-07-12