Specifications & Certifications
What an Interlock® roof is tested to, rated for and made of — each claim on its own page with the report attached.
Certifications & test reports
- ICC-ES ESR-1790
- Code-compliance evaluation under the 2009–2021 IBC & IRC — fire classification, wind-uplift and weather resistance.
- UL 2218 Class 4
- The highest impact (hail) rating: a 2-inch steel ball dropped from 20 feet, no cracking or rupture.
- Florida FL7263-R7
- Florida Building Code product approval; wind-uplift tested to UL 580 / TAS 125 / UL 1897.
- All testing reports
- Every certification with the embedded report and a link to the issuing body.
- CCMC 10475-R evaluation
- Canadian Construction Materials Centre evaluation for the Interlock system.
Materials & performance
- Alunar® coating system
- The PVDF-based finish: what it is made of, how it is applied, and what it is warranted against.
- CRRC-rated cool roof products
- Solar reflectance and thermal emittance ratings listed with the Cool Roof Rating Council.
- Metal roof colors
- The full color range with CRRC values where rated.
Documents & incentives
- Specification manuals
- Installation guide, architect specification and spec sheets as downloadable PDFs.
- Energy-efficiency tax credits
- Which Interlock products qualify, and what documentation a homeowner needs.