25+ years, GAF Master Elite, one standard
GAF Master Elite
Fewer than 3% of U.S. roofers qualify — meaning up to 50-year system warranties, not just material coverage.
1,200+ reviews
Verified Google reviews across all 5 California markets — real jobs, real homeowners, real ratings.
Years in California
El Niño seasons, 115°F summers — we know how California roofing systems actually fail, not just how they’re built. That’s the difference between a national franchise following a manual and a crew that’s diagnosed thousands of California-specific failures firsthand.
Down financing
4.99% APR, 12-year special. Most homeowners qualify same day, no hard credit pull required.
Every roofing service California needs
From a single leak to a full commercial replacement — Grandmark handles every roofing system across all 5 markets. We fix the right thing, document it on video, and stand behind every job, regardless of whether it’s a $400 flashing repair or a $20,000 commercial replacement.
Roof Repair
We find the real cause — not just the visible symptom. Video-documented, guaranteed.
See repair scope →Roof Replacement
Done in 1-3 days. Up to 50-year GAF warranty. $0 down financing available.
See replacement scope →Roof Inspection
Free, video-documented inspection with written report. No obligation.
Book an inspection →Emergency Roofing
24/7 emergency response across all 5 markets. Active leaks treated immediately.
See emergency service →Commercial Roofing
TPO, flat roof, metal systems. OSHA compliant. Zero business downtime.
See commercial scope →Roof Financing
$0 down, 4.99% APR 12-year special. Most homeowners qualify same day.
See financing options →We fix the problem. Or you don’t pay.
If we diagnose your roof and fix it, and the same problem comes back, we make it right at no charge. We stand behind every repair we complete. Not because we have to — because we want you to call us back when it’s time for a full replacement. We don’t patch symptoms. We fix causes. When you repair the right thing the right way, the problem stays fixed. Applies to all residential and commercial repairs across all 5 California markets.
$10,000-$15,000 roof. $0 today.
$0 down · 4.99% APR · 12-year term · no early payoff penalty. Most homeowners qualify same-day, no hard credit pull.
What California customers say
4.8 stars across 1,200+ verified Google reviews from customers across all 5 of our California markets.
Grandmark did an amazing job fixing our roof and duct work together — recommend them 10/10. Thank you for making our home look great.
They not only did everything they said they would do in the estimate, they went above and beyond with the repairs and came out on New Year’s Day to do the job!
David provided me with an estimate and video of the tile roof issue. He did a good job explaining the situation clearly, no pressure at all.
What’s going on? We’ll text back within 24 hours.
No pressure, just real numbers. We’ll route your call to the nearest of our 5 California offices. Prefer to talk it through? Call (866) 945-6473 instead.
Frequently asked questions
Honest answers to what California homeowners ask most before calling us.
How much does roof repair cost in California?
Most residential repairs range from $350 to $2,500. Common repairs fall between $400 and $800. Cost depends heavily on material — tile and metal repairs typically run higher than shingle — and on how many separate issues the inspection finds. We provide a free itemized quote before any work begins — no surprises, no phone estimates.
Do I need a repair or a full replacement?
If your roof is over 20 years old or has more than 25-30% damaged surface area, replacement is usually the better investment. We document both options on video so you decide with full information — no pressure.
How fast can you get to my roof?
Same day or next day in most cases. We dispatch from 5 California offices. For active leaks, call our 24/7 line and we treat it as an emergency.
What financing do you offer?
4.99% APR over 12 years — a $12,000 replacement works out to around $106/month. Most homeowners qualify same day with no hard credit pull required.
Are you licensed and insured in California?
Yes. CSLB #1030917. Every crew member is covered by workers’ comp and general liability on every job. You can verify our license at the CSLB website.
Serving all 5 California markets
Licensed roofing crews dispatched from 5 offices. Same-day service available in most areas.
Modesto (Stanislaus County) →
Not sure which office serves your address? See the full list of every city we serve →
Ready to fix your roof the right way?
Free same-day inspections across all 5 California markets. We fix it or you don’t pay.