New Roof, Done Right.
As Low As $139/mo.
Roof replacement & repair across Stanislaus, San Joaquin & Merced counties. Photo and video documentation on every job — you see exactly what we found and exactly what we fixed. Licensed since 1995.
- 0% interest up to 5 years, or 4.99% up to 12 years
- Full tear-off, deck inspection & permits on every replacement
- Modesto · Stockton · Merced · Turlock · Manteca · Oakdale + more
Get Your Free Roof Quote in 60 Seconds
Answer a few quick questions — exact pricing, no obligation.
A New Roof Shouldn't
Empty Your Savings.
A full roof replacement is one of the biggest purchases a homeowner makes. Here's what a $15,000 roof actually looks like per month.
- 60-second approval, same day
- No prepayment penalty
- No payment until the work is done
- Fixed rate, never changes
- Pay it off early anytime, no penalty
- Cheaper than the water damage you're risking
Financing on approved credit through third-party lenders. Monthly payments shown are examples based on a $15,000 roof replacement: $250/mo at 0% APR for 60 months, or $139/mo at 4.99% APR for 144 months. Your terms may vary based on roof size, materials, credit, and lender.
From First Call to Finished Roof
In Three Steps.
Free Inspection, Documented on Camera
We get on the roof and photograph everything — every crack, every soft spot, every worn shingle. You see the evidence before a single dollar is discussed.
Honest Quote & Your Payment Plan
Repair it if it's repairable, replace it if it's not — we show you both numbers. Then pick 0% up to 5 years or 4.99% up to 12. Approval in about 60 seconds.
Torn Off, Rebuilt, Proven on Video
Full tear-off, deck repairs, new underlayment, permitted and inspected. Most homes done in 1–2 days — and you get photo proof of every layer before you sign off.
Most Roofs Don't Wear Out.
Bad Workmanship Does.
The number one cause of roof failure isn't age — it's shortcuts: skipped underlayment, sloppy flashing, roof-overs hiding rotten decking. Here's what "done right" means at Grandmark.
Standing water and failed shingles out, new underlayment and a properly built roof in — documented at every layer so you see exactly what you paid for.
The Crew That Quotes Is the Crew That Installs
No subcontractors. The licensed Grandmark team that walks your roof and writes your estimate is the same team that tears off the old one and builds the new one. When it's our name on every step, there's nobody to point fingers at but us.
Full Tear-Off & Deck Inspection
No roof-overs that hide rotten decking. We strip to the wood, repair what's damaged, and photograph the deck before anything gets covered.
Flashing & Penetrations Done Right
Nearly every roof leak starts at a valley, vent, or chimney. We replace flashing instead of caulking over the old — caulk is a promise to leak later.
Pulled Permits, Real Inspections
Every replacement is permitted with your city and inspected. If a roofer skips the permit, ask yourself what else they're skipping.
Photo & Video Proof of Every Layer
Decking, underlayment, flashing, finished roof — documented and sent to you before sign-off. That's been our standard since 1995.
Replace. Repair. Protect.
One Call Covers It All.
One licensed local crew for the full life of your roof — from full replacement to the smallest leak.
Roof Replacement
Full tear-off, deck repair, new underlayment, permitted and inspected. Shingle, tile, and flat roofs — most homes done in 1–2 days, from as low as $139/mo on approved credit.
Roof Repair & Leaks — 24/7
Missing shingles, storm damage, ponding water, active leaks at 2am. We tarp fast, find the source on camera, and fix the cause — not just the symptom.
Call now — we pick up →Free Roof Inspections
Buying a home, filing an insurance claim, or just not sure what shape your roof is in? We inspect, photograph everything, and give you a straight answer — free.
What Customers Say
After the Job Is Done.
"Two roofers quoted me a full replacement. Grandmark got on the roof, photographed everything, and showed me it was a flashing repair. They could have taken me for $14,000 and didn't."
"Full tear-off and new roof in two days. They sent photos of the decking before they covered it and walked me through every layer. The 0% financing made it painless."
"Roof started leaking during the first big storm of the year. They had it tarped that night and permanently fixed that week. Showed me video of exactly what failed and what they did."
Serving Stanislaus, San Joaquin
& Merced Counties.
Local crews serving Modesto, Stockton & Merced — not a call center three states away.
Straight Answers,
Before You Call.
Leak Stopped Today, or a New Roof
From $139/mo.
Call now or answer four quick questions — either way, you get an honest number backed by photo proof.