Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Replacement Across Napa
A full roof replacement in Napa typically costs $14,000 to $28,000 on an average single-family home, with most projects finishing in 3 to 5 working days once materials land. If you’re calling from Browns Valley, Alta Heights, or over near Westwood, we’ll walk your roof with a written scope in hand so you know exactly what’s being torn off and what’s going back on before you sign anything. Our crews serve Napa directly, and dispatch runs from the brand’s San Francisco Bay Area office. Call (325) 246-5075 and a live person picks up, not a voicemail tree.
Why Crestview Roofing Is Napa’s Preferred Roof Replacement Company
Dylan Pace built Crestview Roofing in 2000 on a simple idea most Napa homeowners had never seen from a roofer: put the price in writing before any work starts, and make that number stick. Every job we run in Napa operates under The Relay Visibility Guarantee, which means you get a written line-item price up front, before and after photos of the actual work, a live trackable arrival time, and a digital invoice sent by text when we’re done. There’s no other roofer serving Napa who documents the job the way we do because most simply won’t.
The 365-Day Done Right Promise covers every roof replacement and Roof Repair – Napa we perform in Napa for a full year, in writing, at no extra cost. If something fails within that year, we come back and correct it free. No negotiation, no chasing a warranty department. That promise is part of the reason Napa homeowners keep calling us back when the next project comes up.
Our technicians are background-checked and uniformed, so the person who knocks on your door in north Napa or off Trower Avenue is the same person whose name and arrival time you already received. We don’t send subcontractors we’ve never met. We send our own people, trained on GAF, CertainTeed, Owens Corning, IKO, Atlas, and Tamko systems.
Flat Roof Replacement in Napa
Flat Roof Replacement work in Napa usually runs $8,000 to $18,000 depending on the roof’s square footage, how many layers we’re tearing off, and whether the decking underneath is sound. We see flat and low-slope roofs most often on mid-century ranches in Browns Valley, on additions off Alta Heights homes, and on detached garages throughout the city. Napa’s summer heat is brutal on older built-up roofs: the aggregate wears thin, the felt cracks, and water finds a seam nobody noticed. On these jobs we pull the old membrane, check the decking for dry rot, then install a modern system like modified bitumen or a TPO single-ply membrane with proper tapered insulation where needed.
When a full replacement beats another patch
If the roof is 20 years old or more, or you’ve had two or more leak repairs in the past five years, a patch is throwing money at a failing system. Napa’s dry summers create thermal movement that pulls old seams apart, and once moisture gets under the membrane, the decking starts to soften. Replacing now costs less than replacing after a ceiling collapse.
What the replacement includes
We tear off the old layers down to decking, repair or replace any rotted wood, install new underlayment and flashing, then lay the new membrane with sealed seams and proper edge terminations. For Napa roofs in wildland-urban interface zones, we detail valleys and penetrations with ember-resistant materials so the fire inspector doesn’t flag the job at final.
Roof Replacement Contractor in Napa
A Roof Replacement Contractor in Napa should be able to talk you through the city’s re-roof permit, WUI fire requirements, and what the final inspection will look at. That’s the part most bids skip. Napa’s building department requires a permit and final inspection for any full roof replacement, and because large portions of the city sit in a wildland-urban interface zone, the roof assembly often must carry a Class A fire rating with ember-resistant detailing at eaves, valleys, and pipe penetrations. A contractor who prices Napa roofs using a standard assembly from non-WUI cities like Vallejo or Fairfield is setting you up for a failed inspection or a non-compliant roof.
Scoping the job before quoting
Before we give you a written price, we physically inspect the roof. We check how many layers are already up there, whether the sheathing feels soft at the valleys, and what condition the soffit vents are in. That’s how we avoid the surprise change orders that plague Napa homeowners who picked a bid based on square footage alone.
The materials question
For Napa’s steep-slope roofs, architectural shingles outlast and outperform old three-tab in every way that matters: wind resistance, impact resistance, and fire performance. We install GAF, Atlas, and CertainTeed systems with manufacturer-backed warranties and our own 365-Day Done Right Promise on top. If we’re pulling off a roof with three layers, we strip it all to decking because Napa’s hillside homes in that 1970s era often have three-tab layered over three-tab layered over three-tab and the framing wasn’t designed for that load.
Trusted Brands We Service in Napa
We install and repair manufacturer-backed systems from GAF, Atlas, and CertainTeed, which means the materials on your Napa roof carry real factory warranties, not just ours. We can source common architectural shingle colors and profiles locally for Napa projects, so a roof replacement off Solano Avenue or up in the Coombsville foothills doesn’t stall waiting on a truck from another state. When you call for a quote, we’ll tell you which system fits your budget and your WUI zone requirements, and we’ll put that in writing before you commit.
Common Roof Replacement Problems We See in Napa Homes
- Multiple layers of old roofing hiding under the shingles you can see. Homes built in the 1950s through 1980s in neighborhoods like Alta Heights and Westwood often have two or three layers of three-tab still nailed down. That drives tear-off time, dump fees, and sometimes decking repairs way up.
- Rotted decking at valleys from long-running flashing leaks. Napa’s winter rains pool at valleys, and if a previous roofer didn’t replace the valley metal, water sat on the sheathing for years. We see this on nearly every older home we open up.
- Blocked or short-vented attics. Many Napa homes have soffit vents that were painted over or never cut at all, so the attic bakes in summer. A new ridge vent without intake air is a waste of money, and a replacement that ignores ventilation shortens the life of the new shingles.
- Non-compliant assemblies on WUI-zone homes. Bids that quote a standard roof assembly without checking whether the home sits in a wildland-urban interface zone set the job up for a building code problem. Napa inspectors know their WUI map, and so do we.
Pricing for Roof Replacement in Napa, CA
For asphalt shingle roofs in Napa, expect $14,000 to $28,000 on a typical 1,800 to 2,400 square foot home, with architectural shingle systems on the upper end and basic three-tab on the lower. Flat or low-slope roofs run $8,000 to $18,000. The big cost drivers here are straightforward: how many layers come off, whether the decking is sound, and whether the home requires a WUI Class A fire assembly. Dump fees in Napa County run reliably high, and a three-layer tear-off adds real money in both labor and disposal. We give every Napa homeowner a written quote that spells out tear-off, decking allowance, underlayment, shingles, flashing, and ventilation line by line. The number on that page is the number on the invoice, period. Call (325) 246-5075 for a free estimate.
We Also Serve Cities Near Napa
Our Roof Replacement crew serves homeowners in Deer Park, Boyes Hot Springs, Sonoma, and Winters as well. If you’re in one of those communities and ready to price a Roof Replacement in Napa-style written quote with before and after photos and a trackable arrival, call (325) 246-5075. We’ll come out and scope it the same way we do in Napa, with a written number before anything starts.
Serving Napa, CA – Our Local Coverage Area
We’re based in the Napa 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 Roof Replacement in Napa
Yes. Napa requires a re-roof permit for any full replacement, and the city schedules a final inspection once the roof is complete. Homes in wildland-urban interface zones also need a Class A fire-rated assembly and ember-resistant detailing at valleys and penetrations, which the inspector will verify. We handle the permit paperwork and schedule the inspection for you, and we don’t collect the final payment until the inspection passes. Call (325) 246-5075 to get your roof scoped and on the books.
Line up the scopes side by side: number of layers torn off, decking allowance in square feet, underlayment type, shingle brand and line, flashing details at valleys and penetrations, ventilation plan, and whether the permit and dump fees are included. The cheap bid usually assumes one layer and skips decking. The honest bid from us lists every line so you can compare without a calculator. Call (325) 246-5075 and we’ll walk your roof before we put a number in front of you.
Yes, architectural shingles from GAF, Atlas, or CertainTeed are rated for high wind uplift and come as Class A fire-rated assemblies when installed correctly. Napa’s summer heat and winter rain cycles are exactly what these shingles are engineered for, provided the attic ventilation is done right. That means proper intake at the soffits and exhaust at the ridge, which we verify on every Napa replacement. Call (325) 246-5075 for a free written estimate on your roof.
Rotted decking found after tear-off is the big one. If your roof has a hidden soft section at a valley or under a pipe penetration, we’ll show you photos before we sister in new sheathing, and the cost is governed by a pre-agreed per-square-foot decking rate in your written contract. The total never balloons because we already disclosed the unit price before we started. We use the same process on every Napa roof we replace, and a 1950s ranch off Redwood Road once needed valley decking replaced after we found a long-running flashing leak, which we repaired and documented before laying new GAF architectural shingles. Call (325) 246-5075 to get your scope in writing.
Most single-family homes in Napa take 3 to 5 working days from tear-off to final inspection, assuming the weather cooperates. Two-story homes, steep pitches, or three-layer tear-offs can push that longer. We schedule the permit in advance so the job flows without waiting on the building department mid-project. Call (325) 246-5075 to schedule your free estimate and get a realistic calendar for your roof.
Written by Dylan Pace, Owner at Crestview Roofing, serving Napa since 2000.






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