Hail
Impact-rated, and honest about it
Edmonton gets damaging hail too. The storm of August 2, 2019 brought large hail to west Edmonton, Spruce Grove and Stony Plain, and about $90 million in insured damage. Interlock's Slate, Shake, Cedar Shingle and Mediterranean Tile aluminum panels carry a UL 2218 Class 4 impact rating, listed by Intertek under Delta Building Products. No roof is hail-proof, and the material warranty excludes hail larger than 38 mm (1.5 in).
Source: Insurance Bureau of Canada, via Insurance-Canada.ca, 2019 ↗

































