When to replace your roof
Most asphalt shingle roofs last 20–30 years in the Central Valley heat. Tile and metal systems last longer, but age shows on every roof eventually. Call DeHart for a free inspection if you notice granule loss, curling shingles, multiple leaks, daylight from the attic, sagging sections, or age past 25 years.
A free inspection from DeHart tells you exactly where you stand. No sales pitch. Just facts.
What's included in a DeHart roof replacement
A full roof replacement covers every layer of the roofing system. Here is what our crews handle on every job:
- Complete tear-off. All old material removed down to the deck — no layovers.
- Decking inspection and repair. We check every sheet of plywood or OSB and re-sheet rotted sections.
- Ice and water shield. Applied at eaves and valleys where leaks start.
- Synthetic underlayment. Full-deck coverage before shingles go on.
- Drip edge installation. Protects fascia and directs water into gutters.
- Valley flashing. Step and open-valley flashing at every intersection.
- Ridge vent installation. Continuous ventilation to extend shingle life and reduce attic heat.
- Premium shingle install per manufacturer specs and California Title 24 energy requirements.
- Full debris removal and magnetic nail sweep of the property.
- Warranty registration submitted to the manufacturer on your behalf.
What we find during tear-off
Some roof problems only show up once the old material is off. These are the conditions our crews find most often on older Central Valley homes — and what each one means for your project:
- Corroded valley flashing. The metal lining your roof valleys carries the most water and tends to fail first. When we find it corroded, we replace it with new galvanized steel — a standard part of the job, not an add-on.
- Dry-rotted decking. Plywood or OSB rotted by years of trapped moisture, most often on shaded, north-facing slopes. Rotted panels are re-sheeted before underlayment goes down. Widespread rot is the one thing that can move your price — and only ever in writing, with your approval first.
- A roof layered over an older one. A previous re-roof done without a full tear-off adds weight, traps heat, and voids most manufacturer warranties. We strip every layer down to the deck so your new roof starts on a sound surface.
- Attic insulation below current code. If your insulation no longer meets California requirements, we can bring it up to standard. That is an optional add-on with its own line-item price — never added without your say-so.
Our 5-step replacement process
Every job follows the same process. No surprises at the end.
- Free inspection. We walk the roof and the attic. You get a written report with photos — no obligation to move forward.
- Written flat-rate estimate. Every line item is spelled out. The price you see is the price you pay, unless hidden deck damage is found mid-job (see FAQ below).
- Scheduled install date. We work around your schedule and confirm crew and material delivery in writing before the start date.
- Install day. Our crew handles everything — tear-off, decking, underlayment, shingles, flashing, ridge vent. We clean up daily.
- Final walkthrough and warranty registration. You inspect the work with us. We register your manufacturer warranty and leave you copies of all documentation.
Materials we install
We install all major roofing systems, and we recommend materials that comply with California's Title 24 energy code. In our climate zone, Title 24's cool-roof provisions favor more reflective products. That can rule out some of the darkest colors — but it lowers attic temperatures and trims summer cooling bills. Not every material is right for every home — we recommend based on your budget, roof pitch, and climate zone.
| Material | Lifespan | Relative cost | Best for |
|---|---|---|---|
| Asphalt shingle | 20–30 years | $ | Most homes; best balance of cost and warranty coverage |
| Concrete or clay tile | 50+ years | $$–$$$ | Longevity and a classic look |
| Standing seam metal | 40–70 years | $$$ | Longest life, energy savings, solar reflectance |
Asphalt shingles
Asphalt composition shingles are the most common roofing material in Stanislaus County. They offer the best balance of cost, performance, and warranty coverage for the Central Valley climate.
- Pabco entry-tier (3-tab and architectural). DeHart quotes Pabco shingles as a value option for homeowners who want trade-quality installation at the lowest material cost. Pabco is a California-made product with a strong regional track record.
- Owens Corning Duration architectural. Our most popular mid-tier shingle. SureNail technology and wind resistance up to 130 mph. Available in 50-year warranty coverage through our Platinum Preferred status.
- Owens Corning designer and premium lines. For homeowners wanting premium aesthetics — TruDefinition, Berkshire, and Duration Flex options available.
- GAF Timberline HDZ and Camelot. Available through our GAF Master Elite certification. Includes the full GAF Golden Pledge warranty option.
Concrete and clay tile
Tile is common across Stanislaus County, especially in Modesto and Turlock neighborhoods built in the 1980s and 1990s. Clay tile lasts 50+ years in the Central Valley climate. Concrete tile is slightly heavier but more affordable. Both require proper decking and underlayment systems to perform correctly.
Standing seam metal
Metal roofing is growing in Stanislaus County due to energy savings and longevity. Standing seam panels interlock without exposed fasteners, which eliminates the most common leak point on metal systems. Lifespan of 40–70 years. Excellent solar reflectance for Central Valley summers.
Flat and low-slope systems
For homes with flat sections or low-slope additions, we install TPO (thermoplastic polyolefin), EPDM (rubber), and modified bitumen systems. TPO is the current preferred option for its energy reflectance and weld-seamed durability. See our flat roofing service page for details.
Pricing and what to expect
Roof replacement pricing in Stanislaus County depends on four things: roof size (squares), material choice, roof complexity, and decking condition. We give you a written flat-rate quote after the free inspection.
Most single-family asphalt shingle replacements in Stanislaus County run $9,000–$28,000 depending on size, material tier, and decking condition. Tile replacements run higher. Metal runs higher still. We will tell you the real number up front.
- Pabco entry shingles. Lowest material cost in our lineup — best value option for budget-conscious homeowners.
- Owens Corning architectural. Most common choice. Mid-range price, 50-year warranty potential.
- Tile and metal. Higher upfront cost, longer lifespan, higher resale value.
- Financing available. Ask about payment plans — we work with homeowners who need to spread the cost.
We do not charge by the hour. The flat-rate quote is the price. The only exception is hidden deck damage discovered mid-job — we surface that in writing as a change order and get your approval before continuing.
Why DeHart for roof replacement in Stanislaus County
DeHart Roofing has been in Stanislaus County since 1975. In 2026, new local owners acquired the company and brought it up to rigorous operational standards — top manufacturer certifications, skilled crews, and disciplined flat-rate pricing systems.
- A Stanislaus institution. DeHart has replaced roofs in Modesto and Turlock since 1975. That local history matters when you need someone who knows this county's weather patterns and permit offices.
- Clayton DeHart still in the building. Lead salesman Clayton DeHart stayed through the acquisition. He is a familiar face for longtime DeHart customers and knows the local market cold.
- GAF Master Elite certified. Fewer than 2% of contractors nationwide hold this designation. It qualifies your project for the GAF Golden Pledge warranty — the strongest manufacturer warranty in the industry.
- Owens Corning Platinum Preferred. Top 1% of OC contractors nationwide. Required for the full 50-year OC warranty on labor and materials.
- Pabco value option. We offer a Pabco base-tier shingle option. This gives budget-conscious homeowners a real value path without sacrificing installation quality.
- Flat-rate pricing, no change orders unless warranted. What we quote is what you pay. If we find rotted decking mid-job, we stop, show you, and give you a change order before we continue — never a surprise invoice at the end.
See the work — and hear from a DeHart customer
"We had DeHart Roofing replace my House and Shop roof in May. They provided exceptional customer service, perfect execution as outlined in the bid and were extremely efficient and a great value. They brought in a crew that respected our property and made sure the work area was clean and orderly at the end of each day. Within 4 days we had a new beautiful roof that greatly improved the value of our home. I would highly recommend DeHart Roofing for all your roofing needs."
DeHart's Google reviews: 53 verified customer reviews.
Frequently asked questions — roof replacement
Related articles
- Complete Guide to Roofing in Stanislaus County — our 3,100-word pillar guide
- How much does a new roof cost in the Central Valley?
Other services
DeHart Roofing also provides roof repair, free roof inspection, storm damage repair, roof maintenance, gutters & flashing across Turlock and the Central Valley.
Service areas
We provide service across the Stanislaus County corridor: