Certifications & Testing
What the ratings and evaluation reports on a metal roof actually prove, and how to read them.
6 guides
- CCMC 10475-R: Interlock's Canadian Code Compliance ExplainedCCMC 10475-R is the Government of Canada evaluation confirming that Interlock Cedar and Interlock Slate aluminum roofing comply with the National Building Code of Canada 2015.
- Cool Roof & Solar Reflectance: Interlock's Energy Star ValuesInterlock's Alunar-finished aluminum roofing is a cool roof. 84, and were listed as steep-slope ENERGY STAR–qualified roofing.
- Florida Product Approval FL7263: Hurricane-Zone Wind RatingsFlorida Product Approval FL7263-R7 certifies Interlock's metal roofing for the 8th Edition (2023) Florida Building Code.
- ICC-ES ESR-1790: How Interlock Meets the Building CodeICC-ES ESR-1790 is the independent evaluation report confirming Interlock's metal roof panels and shingles comply with the International Building Code and International Residential Code.
- Metal Roofing Certifications Explained: The Complete GuideA trustworthy metal roof should prove four things independently — hail impact (UL 2218 Class 4), building-code compliance (ICC-ES ESR-1790 and, in Canada, CCMC 10475-R), wind resistance (Florida…
- UL 2218 Class 4 Impact Rating: What It Means for HailA UL 2218 Class 4 rating is the highest impact-resistance class a roof covering can earn.