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Boral Fence Installation: The Los Angeles Owner’s Guide
Boral fence installation in Los Angeles typically runs $4,130-$10,620 for a complete residential project, depending on linear footage, terrain, and whether we’re working with Boral’s TruExterior poly-ash siding panels or their traditional masonry-style fence systems. We stock Boral-compatible fasteners, post bases, and cap trim on every Los Angeles truck, and most fence installations are completed in two to three working days once materials arrive. Most homeowners first notice trouble when boards start cupping at the edges, posts lean after winter rains, or the fence line no longer sits plumb - signs that the installation substrate or fastening system is failing.
Which Boral Models This Applies To
Boral’s fence and exterior cladding products fall into two main families, and knowing which you have determines everything from fastener selection to post spacing. TruExterior poly-ash siding, popular in Los Angeles for its resistance to moisture and termites, installs on standard wood or steel framing with corrosion-resistant fasteners at 16 inches on center. Boral’s older masonry veneer systems, sometimes used for decorative fence infill in Hancock Park and Pasadena renovations, require a different substrate - cement board or poured concrete with a weep screed at the base to let moisture escape.
To identify your product, check the back face of any removable board for the stamped Boral logo and lot number. TruExterior will read “poly-ash” or “Boral TruExterior”; masonry units carry a “Made in USA” stamp with a date code. The critical compatibility gotcha in Los Angeles: TruExterior expands and contracts at a different rate than wood framing, so using standard deck screws instead of Boral-specified trim-head fasteners guarantees face cracking within eighteen months. We carry both the OEM Boral fastener pack and an equivalent from Simpson Strong-Tie that meets the same ASTM D1761 withdrawal specs - the Simpson saves about $40 per hundred linear feet without voiding the material warranty.
Signs Your Boral Fence Installation Is Failing

- Board cupping or edge curling. TruExterior boards curl when fasteners are overdriven or spaced beyond 16 inches, creating stress points. In Los Angeles, this accelerates when morning marine layer moisture sits on south-facing fence lines that don’t dry by noon.
- Post lean or gate sag. The post base, not the post itself, usually fails - either the concrete footing cracked during a dry summer shrinkage cycle, or the post base connector rusted through from sprinkler overspray. We see this weekly in Beverly Hills and Culver City properties with automated irrigation hitting fence lines.
- Trim separation at joints. Boral’s poly-ash needs a 3/16-inch gap at butt joints for thermal movement. Installers who butt tight cause “telegraphing” cracks that look like material failure but are really installation error.
- Staining or discoloration at the bottom rail. This signals the weep screed is blocked or missing entirely, trapping moisture against the substrate. In Los Angeles, where we get 35+ days of measurable rain some winters, this rots the framing behind the Boral in two to three years.
- Gate latch misalignment. The gate frame, not the latch, has shifted - usually because diagonal bracing was omitted or the hinge screws pulled from a Boral face board that can’t carry structural load.
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AfterReplacement Cost & What’s Included
| Scope | Price Range in Los Angeles |
|---|---|
| Boral fence installation, standard 6-ft privacy (80-120 linear ft) | $4,130-$6,800 |
| Boral fence installation, custom height or terrain (sloped lot, retaining integration) | $6,800-$10,620 |
| Post replacement with concrete footing (per post) | $340-$580 |
| Board replacement, TruExterior, with fasteners (per 100 sq ft) | $720-$1,180 |
| Gate rebuild with steel frame and Boral infill | $1,180-$2,360 |
What drives the range: access (can we get a mixer truck to the line?), soil condition (Los Angeles hillside lots often need deeper footings), and whether we’re matching existing Boral that may be a discontinued color lot. Every quote is flat and written before work starts - Clause 1 of the Haven Standard. The price includes permits pulled, inspections passed, and our 365-Day Done Right Promise on workmanship. Material defects fall under Boral’s own warranty; we document the lot numbers so you have that claim path if needed.
DIY or Call Us?

There’s safe checking, and then there’s work that needs a crew with the right tools and a license.
What you can do: verify your Boral lot number against the product spec sheet (still available on Boral’s site under “Technical Resources”), check that sprinklers aren’t hitting the fence line, and confirm your gate hinge screws haven’t backed out - a Phillips driver, five minutes, no risk.
Where DIY goes wrong: post setting in Los Angeles requires a permit and inspection for anything over 6 feet; cutting Boral TruExterior without a dust-collecting miter saw fills the air with silica-laden particulate that standard masks don’t catch; and the fastener torque spec - snug but not countersunk - is judged by feel that comes from installing miles of the stuff. We’ve re-installed three homeowner TruExterior jobs in the past two years where the boards looked fine at month three and were cracking at month nine. If it’s not written down, it didn’t happen - and most DIYers don’t write down the fastener pattern.
Rowan Construction Group Los Angeles is an independent service provider, not affiliated with Boral. We source through authorized distributors and keep common Boral profiles in our Los Angeles warehouse rotation. Call (213) 652-7670 to schedule your free estimate.
FAQs
TruExterior fencing lasts 25-30 years in Los Angeles when installed to spec, compared to 10-15 for standard wood in the same climate. The marine layer in coastal neighborhoods like Mar Vista and Playa del Rey adds moisture cycling that tests the fastening system more than the material itself. Call (213) 652-7670 for an exact quote - estimates are free.
Localized failure - a single rotted post, cracked cap rail, or gate frame out of square - can usually be repaired. Systemic failure, where multiple boards show cupping or the weep screed was omitted along the whole run, typically costs more to band-aid than to rebuild correctly. We assess both paths and price them both. Call (213) 652-7670 for an exact quote - estimates are free.
Most residential jobs finish in two to three working days after materials arrive; custom gates or hillside engineering add a day or two. Permitting in Los Angeles takes 10-15 business days for standard fences, which we handle as part of the scope. Call (213) 652-7670 for an exact quote - estimates are free.
We stock TruExterior boards in 4/4 and 5/4 thicknesses, matching cap trim, and the correct trim-head fasteners on every Los Angeles truck. Color-matched caulk and discontinued profiles we order from Boral’s West Coast distribution center in Fontana, typically 3-5 business days. Call (213) 652-7670 for an exact quote - estimates are free.
Written by Grant Rowan, Owner, Rowan Construction Group Los Angeles at Rowan Construction Group Los Angeles, serving Los Angeles and nearby areas.







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