Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
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AfterFast, Reliable Roofing Company Across Sonoma
If you need a Roofing Company that understands Sonoma’s fire codes, county permitting, and aging tile-and-shake housing stock, you’re in the right place. Mercer Roofing handles roof repair, full replacement, and inspections across Sonoma, from the historic streets around the Plaza to unincorporated acreage off Arnold Drive and Bennett Valley Road. We answer the phone live around the clock, we send a background-checked technician whose name and photo you get before they arrive, and every job starts with a written price. Call (743) 200-8347 to schedule a free roof estimate.
Why Mercer Roofing Is Sonoma’s Preferred Roofing Company
Sonoma homeowners keep calling us back because we never send a stranger to the door. Every Mercer technician is background-checked, identity-verified, and badged under the Threshold Verified standard. You’ll know who’s coming, what they look like, and what they’re there to do before they ring the bell. For parents home with young kids or older homeowners living alone, that’s the difference between dreading a repair and scheduling one.
We also know the local ground. Sonoma’s permitting splits between city and county depending on the parcel, and we’ve walked both paths enough times to know which questions to ask before we quote. Our crews work off Sonoma roads every week, so we understand the long hauls up Valley of the Moon roads, the tight driveways on the east side, and the open-lot drainage issues that show up on acreage. Grant Whitlock leads the Mercer Roofing team with a simple rule: if the job’s not right, we make it right – in writing, for 365 days.
Free Roof Estimate in Sonoma
A Free Roof Estimate in Sonoma means something specific to us. We send a trained technician to walk the roof, photograph what’s failing, measure every plane, and give you a line-item written price before we leave. If the property is on unincorporated county land, we flag the county permit path, the septic and well setback review, and any WUI fire-rating requirements that change the scope – before you commit, not after. That’s the difference between a real estimate and a guess.
What We Check on the Walk
Decking condition, underlayment type, flashing at the valleys and chimneys, the state of tile mortar, and whether the existing roof assembly meets current Class A fire code. On acreage parcels, we also check equipment access, the distance from the material drop point to the roof, and how grading and drainage around the structure might affect the job. We scope every detached shop, barn, or ADU on the property at the same time, so the number you get covers the whole roof portfolio, not just the main house.
Why Acreage Properties Cost More to Scope Correctly
A ten-acre parcel with a 1960s ranch, a detached two-car shop, and a guest cottage is not one roof. It’s three roofs with three different pitches, possibly three different permit triggers, and one long material haul from the road. Contractors who quote Sonoma jobs against city-limit assumptions miss this. We don’t.
Roofing Contractor in Sonoma
As a Roofing Contractor in Sonoma, we’re the crew you call when the county permit office wants proof of fire-rated underlayment, or when the June fog has moss creeping across a north-facing plane for the third year running. We hold the line on written pricing: the number on your written price stays your number unless you add work. No change orders hiding behind “unforeseen conditions.” We scope the conditions before we quote, which is the entire point.
Shingles, Tile, and Flat Roofs
We install and repair manufacturer-recognized shingle brands including GAF, CertainTeed, and Owens Corning. But Sonoma’s Mission-style and Spanish Colonial Revival stock demands tile expertise: clay tile mortar repair, underlayment replacement beneath tile, and proper flashing at tile-to-wall transitions. Flat roofing on mid-century ranchers and modern additions gets torch-down or membrane systems with correct slope and drainage.
When a Repair Isn’t Enough
Original wood shake roofs on Sonoma’s hillside and valley-edge properties are now non-compliant when a re-roofing permit is pulled. We’ll tell you straight whether you can patch with our Roof Repair in Sonoma, or whether the permit path pushes you into a full Class A assembly replacement. And if a repair fails within 365 days, the second visit is free. It’s in writing.
Trusted Brands We Service in Sonoma
Sonoma roofing jobs move faster when the materials are already local. We work with GAF, Owens Corning, and IKO shingles and coordinate directly with local suppliers so we’re not waiting two weeks for a special-order color while your roof sits open. We also service the installed tile brands common on Sonoma Mission-style and Spanish Colonial Revival homes, including Boral clay tile. If your home carries a discontinued color or profile, we’ll match it before we touch the ridge.
Common Roofing Company Problems We See in Sonoma Homes
- Moss and lichen on north-facing planes. Persistent marine fog through the Petaluma Gap keeps shaded planes damp for weeks. We see root penetration into tile mortar and shingle tabs on older Sonoma properties every winter.
- Failed underlayment beneath clay tile. Sonoma summers above 95°F bake the felt under tile until it cracks. We strip and replace tile underlayment on a regular basis, especially on Mission-style homes near the Plaza.
- Wood shake roofs that can’t pass a permit. When an acreage property pulls a re-roof permit in the WUI zone, the shake gets red-flagged by the county immediately. We plan for full Class A replacement, not patchwork.
- Valley and flashing leaks after winter rain. Sonoma concentrates 25 – 30 inches of rain between November and March. Flashing and valley metal take the hit. We replace the metal, not just the sealant.
Pricing for Roofing Company in Sonoma, CA
Sonoma pricing reflects the reality of the local market. A standard shingle re-roof on a 1,600-square-foot ranch in Sonoma typically runs $13,500 – $21,000, depending on tear-off, decking repair, and whether we’re adding a Class A fire-rated underlayment for a WUI permit. Clay tile repair including mortar, re-bedding, and underlayment section replacement runs $900 – $3,200 depending on square-footage and access. Flat roof replacement on a mid-century section typically runs $7,500 – $12,000. Acreage properties with detached shops or ADUs add scope: each additional structure adds $4,000 – $9,000 depending on size and pitch. Long material hauls and tight access affect the labor figure, and we’ll tell you that before we quote. Call (743) 200-8347 for a free written estimate with real numbers.
We Also Serve Cities Near Sonoma
Mercer Roofing serves Sonoma and the surrounding communities including Roofing Company in Sonoma neighbors like Boyes Hot Springs, Petaluma, Novato, and Cotati. If your project sits on the county edge between two jurisdictions, we’ll tell you which permit path applies before you spend a dollar.
Serving Sonoma, CA - Our Local Coverage Area
We’re based in the Sonoma 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 Sonoma
Yes. Parcels outside Sonoma city limits run through Sonoma County permitting, including septic and well setback review, which reshapes the timeline and the inspection sequence. City parcels follow the city path. We determine this before we quote so there’s no mid-job surprise. Call (743) 200-8347 and we’ll check your parcel.
In WUI-designated areas, the entire roof assembly – surface material and underlayment together – must carry a Class A fire rating. You cannot set Class A shingles or clay tile over a non-rated felt and pass inspection. We spec Class A underlayment beneath the surface material on every Sonoma WUI re-roof we bid. That’s the code nuance that fails jobs for contractors trained outside fire-prone jurisdictions.
We count every structure’s squares separately, measure each pitch, check each access path, and include all of it in one written price. A detached shop isn’t an add-on discovered mid-job; it’s part of the walk from the first visit. Call (743) 200-8347 and we’ll walk the whole property.
We service and install Boral clay tile, and we repair the mortar beds at ridges and hips that Sonoma’s winter rain loosens. We don’t patch over loose mortar with sealant; we re-bed it, then re-point what’s cracked. It’s the difference between a roof that leaks again next winter and one that holds.
The Petaluma Gap marine fog keeps north-facing planes wet for extended stretches, and Sonoma’s mature oak canopy adds shade and organic debris. We clear the growth, identify whether it has lifted tile or shingle tabs, fix the underlying seal, and recommend zinc or copper strips at the ridge where conditions warrant. The fix should last, not just look clean for one season.
If you’re ready for a written price and a technician whose name and face you’ll know before they arrive, call Mercer Roofing at (743) 200-8347 or use our contact form to schedule your free estimate. Grant Whitlock and the Sonoma crew will take it from there.
Written by Grant Whitlock, Owner at Mercer Roofing, serving Sonoma since 2000.