Products / Atlas StormMaster Slate
Atlas StormMaster Slate
UL 2218 Class 4Atlas Roofing's StormMaster Slate asphalt shingle, listed under Designer Shingles With Scotchgard Protector on Atlas's shingle pages and built with Atlas's Core4 technology. The archived product page prints a 22-11/16 in by 18-1/2 in shingle with an 8-1/2 in exposure, 25 shingles per bundle, Scotchgard Protector algae resistance, UL 2218 Class 4 impact resistance and a 130 mph Wind Limited Warranty.
No longer listed by Atlas Roofing Corporation as of October 11, 2026. No discontinuation notice has been found.
Page checked, verified October 11, 2026
Manufacturer
Material
Product line
StormMaster
Wind rating
130 mphImpact class
UL 2218 Class 4Fire rating
Class A
Standards met
ASTM D7158 Class HASTM D6381ASTM D3018 Type 1ASTM D3161 Class FASTM D3462UL 2390 Class HUL 2218 Class 4CAN/CSA-A123.5-M90UL 790 / ASTM E108 Class A
Dimensions
Length 22.6875 in., width 18.5 in., exposure 8.5 in.
Sources
- web.archive.org verified 2026-10-11
- atlasroofing.com verified 2026-10-11