Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
After
Before
AfterFast, Reliable Roofing Company Across Danville
If you’re searching for a Roofing Company that knows Danville’s specific roof problems, you’re in the right place. A full roof replacement in Danville typically runs $14,000 – $28,000 for an average single-family home, while a roof repair usually lands between $450 and $1,900, depending on what’s failing. We send a background-checked technician whose name and photo you’ll see before they ever knock on your door. Call (743) 200-8347 for a written price, not a vague estimate.
We work throughout Danville every week, from Greenbrook to the Blackhawk Road corridor, so we know what 40-year-old wood shake and concrete tile systems look like once they start failing under the inland heat. Grant Whitlock leads our team, and he insists on one thing before anything else: you know exactly who is walking up your driveway, and you know what the work costs before we start.
Why Mercer Roofing Is Danville’s Preferred Roofing Company
Danville homeowners don’t just worry about whether a roofer can nail down shingles. They worry about who’s coming to the house. We send a technician’s name and photo before the visit. At the door, they hand you a photo ID badge and stand in a clean, marked uniform. That’s not marketing language. That’s the Threshold Verified standard, part of the Threshold Group family of home-service companies founded in 2000, and it’s written into how every visit works.
Our local reputation is built on written prices and written guarantees. Homeowners off Camino Tassajara, Sycamore Valley Road, and along Diablo Road have told us the same thing again and again: they picked us because of the badge-at-the-door promise, and they stayed because the repair came with a 365-day written guarantee. If the repair fails within a year, we come back and fix it for free. No charge for the second visit. That’s the 365-Day Done Right Promise.
Dispatch and scheduling are coordinated from the brand’s San Francisco Bay Area office, but the crews working on Danville roofs are local to the San Ramon Valley. We answer the phone 24/7 with a live person. Not a call-back form. Not a voicemail. When a Diablo wind event peels a tile off in October and you call at 9 p.m., a real human picks up.
Key Takeaways
- Full re-roofs in Danville run roughly $14,000 – $28,000; repairs run $450 – $1,900.
- Every technician is background-checked, photo-badged, and ID-verified before arriving.
- Every repair includes a written 365-day guarantee with a free second visit if it fails.
- Written price before any work starts. Always.
Roof Inspection in Danville
A Roof Inspection in Danville means walking every plane of your roof, checking penetrations, flashing, valleys, and ridge caps, then photographing the failure before we write a line-item report. If your home sits in the hillside zone near Mount Diablo, which is inside California’s High Fire Hazard Severity Zone, the inspector is also verifying that your current assembly is fire-rated and documented as such. A standard inspection runs $250 – $475 in Danville, and that price converts to a credit on most repair or replacement work you book with us.
What Gets Checked
We inspect decking from the attic side to look for sagging or water staining. We pull back a corner of ridge cap to check whether tiles were mechanically fastened or just mortar-set. A mortar-set cap without fasteners is the classic Diablo wind failure point, and we catch it before the October gusts do.
When Homeowners Call for One
You’re buying or selling a home, and the disclosure packet mentions the original 1980s concrete tile roof. Or you had a leak in an attic valley after the first hard rain. Sellers in Danville often order a pre-listing inspection so a surprise roof defect doesn’t kill a deal at the last week of escrow. In that situation, the written report matters more than the handshake.
Commercial Roofing in Danville
Commercial Roofing in Danville means low-slope and flat systems on offices, medical buildings, and retail strips along San Ramon Valley Boulevard, plus a handful of HOA community buildings near Blackhawk Road. These roofs fail differently than residential systems: ponding water, seam separation in single-ply membranes, and failed flashing at curbs and HVAC penetrations. A typical commercial roof repair in Danville runs $900 – $4,500, and reroofing a small-to-mid commercial building generally lands between $25,000 and $85,000, depending on decking condition and insulation requirements.
HOA Community Buildings
We handle association properties where the board needs a written proposal, a project calendar, and a guarantee that unit owners can call about. That written price gets locked before work starts, and change orders come back to the board in writing before any additional nails are driven.
Flat and Low-Slope Systems
Danville’s inland heat means membrane crews are working on roofs that can hit 140°F surface temperature in August. We inspect seams and flashing details with that exposure in mind, then document everything for the building owner’s insurance file.
Trusted Brands We Service in Danville
We work with the manufacturers Danville homeowners already know, including GAF, Boral, and Tamko. If your roof carries one of those shingle lines, we can match the product and the color, and we’ll pull from local Danville-area supply stock so you’re not waiting two weeks for a special order. We’re a manufacturer-recognized installer, which means our installations maintain the shingle warranty you paid for. When we repair, we install to that manufacturer’s published spec, not a shortcut.
Your roof is not “just a roof” once termites, dry rot, and venting get involved. We write the repair like a remodel cost addendum: inspection first, allowances written into the contract, and any surprise priced and approved in writing before we touch it. That approach is why our quotes don’t spiral into change-order fights after the decking comes off.
Common Roofing Company Problems We See in Danville Homes
- Mortar-set ridge caps without mechanical fasteners. A standard practice on 1980s and 1990s concrete tile work. The first strong Diablo wind event peels caps off in a line down the ridge.
- Original wood shake in the HFHSZ. Homes near Mount Diablo’s foothills legally cannot be re-roofed with shake. A replacement isn’t an option upgrade, it’s a Class A fire-rated mandate.
- Failed underlayment under concrete tile. Danville’s 95 – 105°F summer heat bakes the felt under tile, which then disintegrates under the tile’s weight. By the time a leak appears inside, the decking has often already begun to rot.
- Roof penetrations and valleys that were flashed incorrectly on complex rooflines. Upper-end tract and custom homes from the mid-1970s through the 1990s often have multi-faceted roofs, and those intersections fail first.
Pricing for Roofing Company in Danville, CA
Here’s what Danville homeowners should expect, in real numbers. A typical roof repair runs $450 – $1,900. A partial reroof on one slope or a flat section runs $3,500 – $8,500. A full roof replacement on a standard Danville single-family home runs $14,000 – $28,000, and the number moves based on what we find under the old roof: decking condition, dry rot in fascia, and whether the original assembly was Class A fire-rated. A Roof Inspection runs $250 – $475 and converts to a credit if you book work with us.
What moves a quote in Danville specifically? Hillside access, tile removal and disposal, and the Class A upgrade requirement if your home is in the HFHSZ. But you’ll know the price before work starts. Always. Call (743) 200-8347 for a free estimate.
We Also Serve Cities Near Danville
Our crews work throughout the San Ramon Valley, so if you live just outside Danville, you’ll still get the same written price and badge-at-the-door promise. We serve Roofing Company in Danville neighborhoods plus San Ramon, Clayton, Alamo, and Dublin, and scheduling a day for a roof inspection or repair works the same in all of them.
Serving Danville, CA - Our Local Coverage Area
We’re based in the Danville area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Roofing Company in Danville
No, not legally in most of Danville’s hillside and foothill zones. Much of the town’s hillside housing sits inside California’s High Fire Hazard Severity Zone near Mount Diablo, and the code requires Class A fire-rated assemblies. Shake cannot meet that standard. Your replacement will need a Class A system like concrete tile, standing seam metal, or an asphalt shingle rated for fire. Call (743) 200-8347 and we’ll tell you what your home qualifies for before you spend a dollar on design.
Because the original quote was written without allowances for what’s under the decking. Once the old roof comes off, you’re hit with rotted fascia, undersized framing, or failed ice-and-water shield that nobody planned for. Mercer writes each quote differently: inspection first, then explicit allowances in the line items. If a surprise appears, you sign a written change order before we touch it. Your price doesn’t move without your approval.
A square is 100 square feet of roof area, and it’s how every legitimate roofer prices a roof. Comparing bids by total price alone hides the fact that one contractor is quoting 29 squares and another is quoting 34. On a 3,000-square-foot Danville home with multiple roof planes, that’s a real dollar spread. We itemize squares, underlayment, decking repair allowances, and disposal on every written quote.
Yes, if ridge caps are mechanically fastened and perimeter tiles are properly anchored. Fall offshore winds funnel through the Diablo Range gaps and routinely pop loose mortar-set ridge caps on hillside homes. On a multi-faceted concrete tile roof off Camino Tassajara, our crew found a dozen ridge caps that had popped loose after an October Diablo wind event because the mortar-set caps were never mechanically fastened. We tarped the exposed underlayment, re-set the caps with fasteners, and inspected every penetration and valley on the back slope before signing off.
Often, yes, in the HFHSZ. If your home is in the High Fire Hazard Severity Zone, the building department will require your new roof to meet Class A fire standards, and if your original roof was wood shake, there is no variance. That’s a real compliance cost, and it should be in your quote from day one. Our written proposals include the Class A upgrade as a line item when your address confirms it’s required. Call (743) 200-8347 for a free inspection and a written price.
Written by Grant Whitlock, Owner at Mercer Roofing, serving Danville since 2000.