Modesto · Stockton · Manteca

Roof Replacement in
Stanislaus County.

A new roof is a big investment. We make sure you know exactly what you’re getting before we start — on camera — and exactly what was done when we’re finished. No gray areas.

Call (209) 353-8692
Grandmark roof replacement in Stanislaus County
29Years in Business
1,200+Verified Reviews
4.8★Average Rating
GAFMaster Elite™
BBB A+Accredited
$0 DownFinancing

We replace your roof and seal everything under it — in the same job.

Most roofers tear off the old roof, install the new one, and leave. The deck was wide open the whole time — ducts exposed, penetrations visible — and nobody touched any of it. You get a new roof with the same old problems underneath.

When we replace a roof in Modesto, Stockton, or Manteca we use the open deck to replace duct work, seal every penetration, and document all of it on video. One job. One crew. No callbacks. You get a pre-job video and a post-job video — so there’s a permanent record of everything that was done and why.

GAF Master Elite™ — the top 2%.

We carry GAF’s highest contractor certification. That means better warranties, better materials, and a higher installation standard on every single replacement we do.

Ducts replaced through the open deck.

The deck is already open. We replace contaminated or leaking ducts in the same job — no second crew, no second invoice, no excuses for why it wasn’t done.

Pre-job and post-job video. Every time.

You watch the inspection before we start and receive a completion video when we’re done. A permanent record of every seal, every penetration, every piece of material used.

GAF Master Elite™ Certified
BBB A+ Accredited
CSLB #1030917
In Business Since 1995
1,200+ Five-Star Reviews
$0 Down · 0% Interest · 18 Mo.

Ready for a roof replacement estimate?

Free on-site inspection. We walk your roof, document what we find, and give you an itemized quote — before you commit to anything.