Fiber Cement Siding in the Bay Area

Fiber cement is a material category, not a single brand. Choosing well starts with understanding what it is, how it behaves, and how the major lines differ.

Fiber cement sidingNoncombustible & durableLarkspur, Marin County(415) 619-5167

Bay Area Siding Company installs fiber cement siding from James Hardie, Allura, and Nichiha on homes across the Bay Area. This page explains the category. If you've already settled on Hardie, our brand-specific page goes deeper on that line.

Weighing fiber cement for your home? Request an estimate and we'll walk the house with you.

Call (415) 619-5167

What fiber cement is, and what it isn't

Fiber cement siding is made from Portland cement, sand, and cellulose fibers, formed into planks, panels, shingles, and trim. The cement and sand provide hardness and dimensional stability. The cellulose adds enough flex to keep the board from behaving like a brittle tile. The result is noncombustible, it doesn't rot, insects don't feed on it, and it holds paint well. With proper installation and upkeep it is a long-lived cladding.

It is not maintenance-free, and it is not waterproof in the way people sometimes assume. Unsealed cut edges can take on moisture. Boards that sit too close to grade, roofing, or a patio can wick water. Caulked joints at trim still need periodic attention. Like every siding, fiber cement sheds most of the water, and the water-resistive barrier (WRB) and flashing behind it handle the rest. A fiber cement job lives or dies on that backing assembly.

It is also heavy. Long planks need two people to handle without cracking. Cutting releases crystalline silica dust, so it should be done outdoors with shears or dust-collecting saws, not a bare dry blade in the driveway. Fastener type, nailing location, and clearances all come from the manufacturer's installation instructions. None of this makes fiber cement difficult to live with, but it does make it a material that rewards an experienced crew.

Fiber cement brands compared

Brand	Known for	Finish options	Honest trade-offs
James Hardie	Broad lineup of lap, panel, shingle, and trim products; widely stocked in Northern California	Primed for field paint, or factory ColorPlus finish	Wide availability and a deep accessory line; factory colors limit you to the published palette
Allura	Lap, panel, and shake-style fiber cement profiles	Primed; factory-finish availability varies by product and distributor	A capable alternative line; stocking and color options depend on local supply, so we confirm availability early
Nichiha	Large-format architectural wall panels with a concealed clip installation system, plus lap products	Factory-finished textures and colors on many panels	Panels suit modern and commercial-style facades; the clip system has its own detailing and isn't a like-for-like swap for traditional lap

At a glance

MaterialCement, sand, and cellulose fibers

Fire postureNoncombustible cladding

Moisture & pestsResists rot, insects, and moisture damage when installed to spec

MaintenanceHolds paint well; inspect caulked joints and repaint as the finish ages

Warranty (qualitative)Manufacturer limited warranties vary by brand. Hardie offers a transferable 30-year substrate and 15-year ColorPlus finish limited warranty.

Choosing among fiber cement options

Factory finish or field paint?

A factory finish is applied and cured under controlled conditions and comes with its own finish warranty from the maker. Field paint gives you unlimited color choice and lets you match an existing trim scheme or historic palette. Both are sound; the decision usually comes down to color flexibility versus finish consistency.

Lap, shingle, or panel?

Lap siding in a narrow reveal reads right on Victorians, Craftsman bungalows, and many mid-century tract homes. Shingle profiles suit cottage and shingle-style houses. Vertical or large-format panels can echo the grooved siding on Eichlers or give a modern facade clean lines, but panel joints need careful flashing and layout.

Is fiber cement the right material at all?

Not always. LP SmartSide engineered wood is lighter, easier to work, impact-resistant, and has a convincing real-wood look. Vinyl suits budget-conscious projects where low maintenance and lower upfront cost matter. Fiber cement's particular strengths are noncombustibility, dimensional stability, and paint-holding, which matter most on fire-exposed lots and homes you plan to keep for a long time.

Does brand matter more than installation?

Every major fiber cement line performs well when installed to its instructions, and none tolerates careless detailing. Clearances, flashed butt joints, sealed cut edges, and proper WRB integration drive long-term results more than the logo on the pallet.

What drives the cost of a fiber cement project

Tear-off and disposal of the existing siding, which is more involved for stucco or multiple old layers
Sheathing, WRB, and flashing repairs uncovered once the old cladding is off
Brand, profile, and finish, including factory-finished versus primed-and-field-painted
Trim, corners, window surrounds, and architectural detail, which add labor quickly on Victorians and complex facades
Access: story count, hillside lots, tight side yards, and staging needs
Permitting and any fire-hazard-zone requirements for vents, eaves, and openings confirmed by your AHJ

Fiber cement and Bay Area conditions

Near the coast, marine-layer moisture and salt air keep walls damp for long stretches. On exposed elevations there, a rainscreen gap using furring strips behind the siding is worth discussing because it lets the wall dry. Inland, strong sun and summer heat are harder on finishes than on the board itself, which is one reason finish choice deserves thought. On parcels mapped in Cal Fire's fire hazard severity zones, noncombustible siding helps the exterior wall portion of California Building Code Chapter 7A. That chapter also governs vents, eaves, windows, and decks, so siding alone doesn't make a home compliant. We confirm current requirements with the local building department at permit time.

Our fiber cement installation process

Consultation and estimate. We look at the home's era, exposure, trim details, and any fire-zone status, then recommend a brand, profile, and finish with a clear written scope.
Tear-off to the sheathing. We remove the old siding down to the sheathing/substrate, exposing the existing WRB and flashing.
Inspect sheathing, WRB, and flashing. A common issue when older siding comes off is brittle or missing building paper and window flashing that relied on caulk. Soft sheathing below sills is also worth checking closely.
Repairs and corrections. Damaged sheathing is replaced, and problems are documented and discussed with you before the wall is closed up.
New WRB and flashing details. The WRB is lapped shingle-style, window and door flashing is integrated with it, and kick-out flashing goes in at roof-wall intersections. Furring is added where a rainscreen is part of the plan.
Install to manufacturer spec. We use the specified fasteners and nailing, maintain required clearances to grade, roofing, and hardscape, flash butt joints, and seal cut edges. Cutting is done with dust control.
Final walkthrough. We walk every elevation with you, check trim and caulk joints, and review care of the finish.

Why homeowners choose Bay Area Siding Company

We treat fiber cement as the outer layer of a wall assembly, not a cosmetic panel, and we tell you plainly when another material may suit your home better.

Assembly-first work

Every job includes a look at the sheathing, WRB, and flashing before new siding goes on.

Installed to spec

Clearances, fasteners, and joint details follow the manufacturer's written installation instructions for the product you choose.

Local and direct

We're based in Larkspur and serve the Bay Area; you can reach us directly at (415) 619-5167.

Other services we offer

Compare specific products or see the wider scope of our siding work.

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Fiber Cement Siding FAQ

Is fiber cement a good choice in a Bay Area fire hazard zone?

Fiber cement is noncombustible, which makes it a strong fit for the exterior-wall part of Chapter 7A requirements. Vents, eaves, windows, and decks carry their own requirements. We check your parcel against Cal Fire's maps and confirm details with your AHJ.

Can fiber cement go over my existing siding?

Generally we recommend a full tear-off. It exposes the sheathing, WRB, and flashing so hidden damage can be found and the new cladding gets a sound, properly flashed base.

Will fiber cement match my Victorian or Eichler?

Often, yes. Narrow-reveal lap and shingle profiles suit many older homes, and vertical or panel products can echo mid-century grooved siding. Some ornate trim may still call for other materials.

How much maintenance does it need?

Fiber cement holds paint well and doesn't rot. Plan to inspect caulked joints periodically and repaint when the finish ages, with sun-facing walls usually first.

Ready to choose the right fiber cement for your home? Schedule a consultation with our team.

Call (415) 619-5167