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James Hardie Fence Installation: The Los Angeles Owner’s Guide
James Hardie fence installation in Los Angeles typically runs $4,130 to $10,620 for a full panel and post replacement on an average city lot, and most jobs wrap in one to two days once materials are on site. We stock fiber cement fence panels, post sleeves, and trim boards sized for Hardie’s standard 6-foot privacy layouts, so the wait is usually material delivery, not finding the parts. Owners usually discover a problem after a weed whacker chews through a bottom rail, a post pops loose in a rain-soaked stretch of clay, or a panel starts flaking at the edge where sprinklers have been hitting it for years.
Which James Hardie Models This Applies To
Hardie doesn’t sell a “fence kit” the way some vinyl brands do. What we install are James Hardie fiber cement panels and trim boards, typically HardiePanel vertical siding in a 4×8 sheet or HardiePlank lap siding, cut and framed as fence sections with HardieTrim boards acting as rails and post wraps. The material you have matters – HardiePanel runs 5/16 inch thick and weighs about 2.3 pounds per square foot, so the posts and framing underneath have to be beefier than what a wood fence would use. If your existing fence was built with 4×4 posts spaced 8 feet apart, Hardie panels will stress those posts over time. We upsize to 6×6 posts and tighten spacing to 6 feet on center for fiber cement, which is a gotcha most Los Angeles homeowners find out the hard way two years in when panels start sagging at the midline.
As for OEM versus aftermarket: Hardie products are the OEM material here, and we use them exclusively for panel and trim replacements. The hardware, fasteners, and post anchors are aftermarket by necessity – Hardie doesn’t manufacture those. We spec galvanized or stainless hardware rated for the alkaline chemistry of fiber cement, because standard deck screws will corrode and leave rust streaks down a panel within a few Los Angeles rain seasons.
Styles & brands we work with
Signs Your James Hardie Fence Installation Is Failing
- Panels pulling away at the corners. Fiber cement is heavy, and when the original installer used nails instead of screws with washers, the material slowly walks off the framing as the house settles and the ground shifts through wet-dry cycles.
- Chalky, flaking edges at the bottom of panels. This is water wicking up from soil contact. In Los Angeles, sprinkler overspray hitting the same spot daily will break down the paint binder faster than direct sun. The fix is trimming the panel up off grade and flashing the bottom edge, not just repainting.
- Posts leaning or twisting. Clay soils in neighborhoods like Echo Park and Silver Lake expand hard in wet winters and shrink in summer. If the post wasn’t set below the clay line with proper drainage gravel, the whole section walks out of plumb. No amount of face-mount brackets saves a moving post.
- Horizontal cracks through the middle of a panel. This happens when the fence framing behind the panel flexes – usually because a gate slams hard against the jamb post, or a tree root pushed the bottom rail up. The panel can’t bend, so it snaps.
- Mushrooming or crumbling at fastener holes. Wrong fasteners and no pilot holes in fiber cement mean the board rubs and grinds around the screw shaft with every wind gust. Once the hole wallows out, moisture gets in and the edge crumbles. By then the panel needs replacement, not a bigger screw.
Replacement Cost & What’s Included
For Los Angeles, a full James Hardie fence section replacement runs $4,130 to $10,620 depending on linear feet, post condition, and access. Here’s how that breaks down:
- Partial panel replacement (1 – 3 sections): $4,130 – $5,900, including new Hardie panels, trim, fasteners, and disposal of the old material.
- Full fence re-skin over existing posts: $5,900 – $8,260 when the posts are still solid and we’re replacing panels, rails, and trim only.
- Full replacement with new posts: $8,260 – $10,620 when posts need to be dug out, re-set, and the entire fence rebuilt to hold fiber cement properly.
Every quote is written, line-itemed, and covers all materials, labor, haul-away, and the 365-Day Done Right Promise. If a panel cracks at the fastener line or a post shifts within a year, we’re back to make it right. No change orders, no surprise line item at the end. The price we write is the price you pay.
See the difference
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AfterDIY or Call Us?
You can safely check a few things: whether the gap at the bottom of your panels is consistent, whether the posts wiggle when you push on them at the top rail, and whether your sprinkler heads are pointed at the fence line. Those are 15-minute homeowner checks and worth doing every spring. What we’d caution against is pulling a panel off the framing yourself. Fiber cement is brittle and heavy, and a 4×8 sheet that lets go while you’re on a ladder or holding it at a corner can crack fast and take a chunk out of you or your stucco. If you see water damage at the bottom edge or a post that’s visibly out of plumb, stop there and call (254) 272-5876. We’ll send someone who knows what the panel should weigh and what the framing underneath should look like, and the quote is free.
FAQs
With proper installation and occasional repainting every 8 to 10 years, fiber cement fence panels last 25 to 30 years in Los Angeles, but the posts and framing underneath often fail first, especially in clay-heavy soils. The material isn’t the weak link; the structure it hangs on is. Call (254) 272-5876 and we’ll assess whether you’re looking at a panel job or a framing job.
Small chips and edge flaking can be patched with exterior-grade cementitious filler and repainted, but any crack that runs through the full panel width means replacement. Fiber cement doesn’t flex, so a patched crack re-opens with the first big wind event or soil shift. Call (254) 272-5876 and we’ll tell you honestly whether a patch will hold or you’re buying time.
For a standard Los Angeles lot of 60 to 100 linear feet, a full James Hardie fence replacement takes two working days: day one for demo, post setting, and framing; day two for panels, trim, and paint touch-up. Partial section swaps are usually done in a single day. We’ll give you a written schedule before work starts and photo updates as the job moves.
We keep standard 4×8 HardiePanel sheets and HardieTrim boards on the truck and at our supplier’s Los Angeles yard, so common section replacements don’t wait on shipping. If your fence has an older panel profile or a non-standard texture, we pull it from the supplier within 2 to 3 business days. Call (254) 272-5876 with your fence’s rough dimensions and we’ll tell you what’s in stock right now.
Ready for a Written Price?
If your James Hardie fence is cracking, pulling, or leaning, don’t wait for it to fall against a neighbor’s property or a car. Call Sawyer Remodeling at (254) 272-5876 and we’ll schedule a free estimate with a written, line-item price before any work starts. Luca Romano started swinging tools in Los Angeles over two decades ago, and the lesson hasn’t changed: good work doesn’t need a sales pitch – it just needs to be done right. We’re an independent contractor, not affiliated with James Hardie, but we know their material cold – the same way we spec KraftMaid cabinets, Cambria countertops, and Silestone surfaces on remodels throughout the city. Call us for a price you can hold in your hand.
Written by Luca Romano, Owner, Sawyer Remodeling at Sawyer Remodeling, serving Los Angeles and nearby areas.
