James Hardie siding replacement in Alamo, CA

Custom Exteriors replaces siding on Alamo homes with James Hardie fiber cement, installed by our own full-time crews, not subcontractors. James Hardie siding resists rot, pests, and moisture, is classified as noncombustible, and comes with a 30-year non-prorated product warranty. We have served Alamo and the San Ramon Valley from our Pleasanton showroom since 1997, with 30,000+ completed projects.

Why Alamo homes are ready for new siding

Most Alamo homes are now old enough that their original siding is near the end of its life. The median Alamo home was built in 1978, and about a quarter of the housing stock went up in the 1970s alone. Wood and early composite siding from that era tends to show the same problems by now: rot at the bottom courses, peeling paint, gaps at the trim, and woodpecker or insect damage.

Alamo's setting adds to the wear. The community sits in a valley between Walnut Creek and Danville, with many homes on half-acre lots surrounded by mature oaks and landscaping. That means:

• Long, hot summers that bake paint off south- and west-facing walls.
• Irrigation and shade that keep the lower siding courses damp and slow to dry.
• Wildlife and insects drawn to wood siding near trees and open space.

Replacing siding is also the best time to fix what is underneath it. When we remove old siding, we inspect the sheathing and replace damaged sections before the new siding goes on.

Why we install James Hardie siding

James Hardie fiber cement is the only siding we install, because it holds up to the conditions that wear out wood siding in Alamo. After evaluating siding products for nearly three decades, it is what we recommend to every homeowner.

• Noncombustible. James Hardie siding is classified as noncombustible when tested to ASTM E136. Wood siding is not.
• Rot and pest resistant. Fiber cement does not rot when it gets wet and does not attract termites or woodpeckers.
• Built for this climate. James Hardie engineers its siding for specific regional climates through its HardieZone system.
• A finish that lasts. ColorPlus Technology is a factory-applied, baked-on finish that holds its color far longer than paint applied on site.
• A real warranty. A 30-year non-prorated limited product warranty on the siding, plus a 15-year limited warranty on the ColorPlus finish.

Siding styles for Alamo homes

The right James Hardie profile depends on your home's architecture, and Alamo has a wide range of it. Ranch homes, traditional two-story homes, custom builds, and modern farmhouse remodels all sit within a few blocks of each other.

• HardiePlank lap siding is the classic horizontal look that suits most ranch and traditional homes.
• HardieShingle siding gives you the cedar shake look for gables and accents, without the upkeep of real shakes.
• HardiePanel vertical siding creates a board and batten look, a popular choice for modern farmhouse remodels.
• Hardie Artisan siding has a thicker profile and deeper shadow lines for custom and higher-end homes.
• HardieTrim boards and soffit panels finish the job with the same durable material around windows, corners, and eaves.

Not sure which color fits? Our East Bay siding color guide is a good place to start, and our Pleasanton showroom has full-size siding displays you can see in daylight.

Permits, HOAs, and older homes

Because Alamo is unincorporated, your siding permit comes from Contra Costa County, not a city. Custom Exteriors handles the permit application and inspections through the County's Department of Conservation and Development as part of your project.

Two other things to plan for:

• HOA approval. Many Alamo neighborhoods have homeowners associations with architectural review for exterior changes, including siding color and style. Check with your HOA early. We provide the product specifications and color samples your application needs.
• Lead-safe work on older homes. About half of Alamo's homes were built before 1980. Paint applied before 1978 may contain lead. We are EPA Lead-Safe RRP Certified and follow lead-safe work practices when removing old siding.

Replacing siding and windows together

If your windows are also due for replacement, doing both at once usually gives you a better result. With the siding off, we can install new windows using the new construction method, which lets us fully flash and seal each opening. That is difficult to do as well once new siding is on the wall.

It also means one project, one crew, and one disruption instead of two. See our Alamo replacement windows page for the Infinity by Marvin fiberglass windows we install.

Why Alamo homeowners choose Custom Exteriors

Alamo homeowners hire us because they can verify who is doing the work and who stands behind it.

• Full-time employee installers, not subcontractors. The crew that installs your siding works for Custom Exteriors. Here is why that matters.
• Local since 1997. We have served the San Ramon Valley from Pleasanton for nearly three decades, with 30,000+ completed projects.
• Permits and inspections handled. We manage the County permit process from application to final inspection.
• Third-party recognition. Diamond Certified and BBB Accredited. See our awards and reviews.
• Warranty coverage. James Hardie's product warranties plus our own product and labor warranty.

Frequently asked questions

Q: Do I need a permit to replace siding in Alamo? A: In most cases, yes. Because Alamo is unincorporated, permits come from the Contra Costa County Department of Conservation and Development, not a city building department. Custom Exteriors handles the permit and inspections for your project.

Q: How much does James Hardie siding cost in Alamo? A: Cost depends on the size of your home, how much old siding has to come off, the condition of the wall underneath, the James Hardie profile and finish you choose, and how much trim is involved. Two-story homes and homes with complex rooflines cost more to side than single-story ranch homes. See our siding pricing guide for the main factors. We provide free, itemized estimates so you know exactly what you are paying for.

Q: Is James Hardie siding fire resistant? A: James Hardie fiber cement siding is classified as noncombustible when tested to ASTM E136, which wood siding is not. Siding is one part of a home's fire resistance, along with vents, roofing, windows, and the area around the house. To see whether your property falls in a CAL FIRE Fire Hazard Severity Zone, enter your address on CAL FIRE's online map.

Q: How long does a siding replacement take? A: Most full-home siding projects take one to three weeks once materials arrive, depending on the size of the home and what we find under the old siding. We give you a schedule at the start and keep you updated if we find damage that needs repair.

Internal: the one-to-three-week range is a placeholder estimate, not CE data. Confirm typical timelines with the install team before publishing.

Q: Can you replace my siding and windows at the same time? A: Yes, and it is often the better approach. With the siding removed, we can install new windows using the new construction method and fully flash each opening. One crew handles both, so you have one project instead of two.

Q: What is the difference between ColorPlus and painted James Hardie siding? A: ColorPlus Technology is a finish baked onto the siding in James Hardie's factory, so it holds color longer and is backed by a 15-year limited finish warranty. Primed siding is painted on site, which gives you unlimited color choices but needs repainting sooner.

Ready to replace the siding on your Alamo home?

Schedule a free, no-pressure consultation. We will look at your current siding, check for damage underneath, walk through profiles and colors, and give you an itemized estimate, with no obligation. Prefer to see the products first? Our Pleasanton showroom has full-size James Hardie displays.

‍Visit our Pleasanton showroom (2142 Rheem Drive, Suite E, Pleasanton, CA 94588) Phone: (925) 249-2280

Financing options

We offer 18 months with no payments and no interest if the balance is paid in full within the promotional period, or 4.99% financing on approved credit. Ask about options during your consultation.

See financing details

Nearby areas we also serve

Custom Exteriors also installs James Hardie siding in Danville, Blackhawk, Walnut Creek, San Ramon, and Lafayette. See everything we offer in Alamo, or view our full service area list.

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