Mark Vance

Vice President, Marketing, Interlock Metal Roofing · Technical reviewer

LinkedIn profile

Mark Vance is Vice President of Marketing at Interlock Metal Roofing (Interlock Roofing Ltd., Delta, BC). He is the named reviewer for the site’s technical content: repair and maintenance guidance, product specifications and certification summaries, and glossary definitions. Each review checks the page against Interlock’s installation manuals, third-party test reports and warranty terms before it is published.

What a technical review checks

  • Specifications match the source documents. Alloy, gauge, coating, ratings and warranty terms are checked against Interlock’s current product data sheets and the Guardian Lifetime Limited Warranty.
  • Certifications are cited exactly. ESR-1790, UL 2218 Class 4, FL7263-R7, CCMC 10475-R and CRRC listings are quoted as issued, with the issuing body linked from the page.
  • Repair and maintenance guidance is installer-safe. Steps are consistent with the installation manual; anything that would void the warranty is stated as such.
  • Numbers carry their basis. Costs, lifespans and energy figures state the assumption or source they come from and the date they were last checked.
  • Dates are honest. “Last reviewed” is set only when the review actually happened; untouched pages carry no new date.

Content reviewed by Mark Vance (64)

Knowledge base

Specifications & certifications

Glossary

Found an error on a reviewed page? Email [email protected] and it will be corrected and re-dated.