When you're hiring a roofing contractor, you'll see a lot of claims — 'experienced,' 'licensed,' 'trusted.' But one credential actually carries weight: CertainTeed ShingleMaster Certified. What Is CertainTeed ShingleMaster Certification? CertainTeed is one of North America's leading manufacturers of roofing materials. Their ShingleMaster program recognizes contractors who have demonstrated a high level of product knowledge, craftsmanship standards, and ongoing training. To earn ShingleMaster status, a contractor must: Have installers pass CertainTeed's rigorous knowledge assessment Demonstrate consistent adherence to installation best practices Maintain an active relationship with CertainTeed Why Does This Matter for You? The biggest reason: your warranty. When a non certified contractor installs CertainTeed shingles, you typically receive the standard manufacturer's warranty. But when a ShingleMaster certified contractor does the work, you're eligible for SureStart PLUS — CertainTeed's enhanced warranty that provides non prorated coverage for up to 50 years. That's a massive difference in protection. What Else Do You Get? Peace of mind that installers know the product inside and out Assurance of proper installation techniques that maximize shingle life A clear path to warranty claims if anything goes wrong Grandville Roofing & Exteriors is proud to be CertainTeed ShingleMaster Certified. When we install your roof, you get the best warranty coverage available — backed by one of the industry's most respected manufacturers. Ask us about your warranty options during your free estimate.