10-Year Workmanship Warranty
We stand behind our work. Every roof we install is backed by our comprehensive 10-year workmanship warranty. Plus manufacturer protection from Owens Corning.
Why Workmanship Coverage Matters Most
Most roofing problems aren't caused by bad shingles. They're caused by bad installation. That's why our workmanship warranty is your most important protection.
Are caused by installation errors. Not material defects.
Our workmanship warranty protects your investment.
If we made an error, we fix it free. No questions asked.
Our 10-Year Workmanship Guarantee
When you choose Cornerstone, you're protected by one of the strongest workmanship warranties in Northeast Ohio.
Installation Defects Covered
If any issues arise from our installation work, we'll come back and fix it at no cost to you. Period.
Full 10-Year Coverage
Not 1 year, not 5 years. A full decade of protection on our workmanship. That's confidence you can count on.
No Hidden Exclusions
Leaks, improper flashing, ventilation issues. If it's related to our work, it's covered under our warranty.
Transferable to New Owners
Selling your home? Our workmanship warranty transfers to the new owner, adding value to your property.
Two Warranties, Total Coverage
You get protection from two sources: our workmanship warranty AND Owens Corning's manufacturer warranty.
Our 10-Year Workmanship Warranty
- Covers ALL installation-related issues
- Leak repairs from improper installation
- Flashing and ventilation problems
- Nail placement and sealing defects
- Fully transferable to new owners
Owens Corning Manufacturer Warranty
- Lifetime Limited Warranty on shingles
- Covers manufacturing defects
- StreakGuard® algae resistance
- Wind resistance up to 130 mph
- Enhanced when using complete OC system
How We Stack Up
Most contractors offer 1–2 years. We offer 10. Here's what that difference means for you.
| Coverage | Cornerstone Roofing | Typical Contractor |
|---|---|---|
| Workmanship Warranty | 10 Years | 1–2 Years |
| Installation Defects Covered | ✓ Yes | ✗ Limited |
| Leak Repairs (Our Fault) | ✓ Free, No Questions | ✗ Often Charged |
| Transferable to New Owner | ✓ Yes | ✗ Rarely |
| Flashing & Ventilation Issues | ✓ Fully Covered | ✗ Usually Excluded |
| Owens Corning Material Warranty | ✓ Lifetime Limited | ✗ Varies |
| Photo Documentation of Work | ✓ Every Job | ✗ Rarely |
Owens Corning Platinum Preferred Contractor
We're part of a select network of contractors who meet Owens Corning's standards for quality, reliability, and professionalism. This means you get access to enhanced manufacturer warranties when we install a complete Owens Corning roofing system.
If Something Goes Wrong, We Make It Right
We hope you never need to use your warranty. But if you do, here's what you can expect from us:
- Call us and we'll schedule an inspection within 48 hours
- We diagnose the problem. No charge for warranty inspections
- If it's our workmanship, we fix it free. No questions asked.
- If it's a material defect, we handle the claim with Owens Corning
10-Year Coverage
From the date of installation
Materials backed by:
Warranty FAQs
What's the difference between your warranty and the manufacturer warranty?
Our 10-year workmanship warranty covers installation issues. Things like leaks from improper flashing or ventilation problems. The Owens Corning manufacturer warranty covers defects in the shingles themselves. Together, you're protected from both.
Is your workmanship warranty transferable?
Yes! If you sell your home, our warranty transfers to the new owner. This can be a great selling point and adds value to your property.
What if I notice a leak after you've installed my roof?
Call us right away. We'll schedule an inspection within 48 hours. If the leak is due to our workmanship, we'll fix it at no cost. If it's a material issue, we'll help you file a claim with Owens Corning.
Why 10 years? Some contractors only offer 1-2 years.
We offer 10 years because we're confident in our work. Most installation problems show up within the first few years. Our 10-year warranty means you're protected well beyond that critical window.
Get a Roof Backed by Real Protection
Schedule your free inspection and get an estimate backed by our 10-year workmanship warranty plus the Owens Corning limited lifetime shingle warranty.
- 10-year workmanship warranty on every project
- Owens Corning manufacturer warranty coverage
- Free inspection, no obligation, no pressure
Ready for a Roof That's Built to Last?
Get a free inspection and estimate backed by our 10-year workmanship warranty.