Family owned roofing & HVAC.
0% financing.
Video proof.
Grandmark has been serving the Central Valley since 1995. Roofing and HVAC — we show up, put everything on camera, and don't send an invoice until you've seen exactly what we did and why. $0 down · 0% interest up to 5 years · 4.99% APR available.
New Roof Today.
Pay On Your Terms.
Same-day financing approval. No money down. Choose 0% interest or a low fixed rate — whatever works best for your family.
$0 down. 0% interest for up to 60 months on qualifying roof repairs and replacements. Same-day approval available.
Prefer a longer term with a low fixed rate? 4.99% APR available on qualifying projects. Fixed monthly payments, no surprises.
No money out of pocket to get started. We handle the roof — you handle the payments on your schedule. One call to check your rate.
The crew that shows up is the crew that quoted you.
We don't use subcontractors. The same licensed team that walks your roof and writes your estimate is the team that tears off the old one and installs the new one. That matters more than most people realize — because when something goes wrong, there's nobody to point fingers at but us. And that's exactly how we like it.
We serve Modesto, Stockton, Manteca, Merced, Turlock, and every city in between. Roofing is our foundation — but we also handle AC repair and replacement for homeowners who want to tackle both under one contractor, one warranty, and one financing plan. Valley heat here is no joke, and a failing AC in the middle of a Modesto summer is just as urgent as a leaking roof in January.
You get the video. Every time.
Before we touch your roof and after we're done. If we can't show you what we did on camera, you don't pay. That's been our policy since day one.
Licensed, bonded, insured — actually.
CSLB #1030917. Full general liability. Workers' comp on every person on your property. Ask any contractor you're comparing us to for the same documentation.
GAF Master Elite™ — top 2% nationwide.
Less than 2% of roofing contractors in the country qualify. It means longer warranties, better materials, and a higher standard of installation on every job.
Come see what 29 years looks like on your roof and AC.
Free on-site estimate for roofing and AC. 0% financing available same day. We show up, look at it in person, and give you a real number — not a ballpark over the phone.