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Therma-Tru Fence Installation: The Los Angeles Owner’s Guide
Therma-Tru fence installation in Los Angeles typically runs $4,130 to $10,620 for a complete project, depending on linear footage, post setting method, and whether we’re replacing an existing fence or starting fresh. We stock Therma-Tru-compatible fence panels, posts, and hardware on our trucks, and most residential installations wrap up in two to four days once materials are on site. The call usually starts with a homeowner staring at a leaning post, a gate that won’t latch, or a section of fence that’s started pulling away from the house after a Santa Ana wind event.
Which Therma-Tru Models This Applies To
Therma-Tru is best known for entry doors, but their fence and gate systems share the same fiberglass composite technology. The fence line isn’t a single series; it’s a component system, so we match post sleeves, rails, and pickets by the product tags on your original order or by measuring the cross-section of an existing post. Here’s the part most Los Angeles homeowners don’t know: Therma-Tru fence posts are engineered with a specific wall thickness and UV-stabilized outer skin, and a generic vinyl post from a big-box store won’t seat into the same post caps or rail brackets. We’ve seen people try it. The cap rocks, the rail sags, and the whole section has to be redone within a year. We order OEM Therma-Tru components when the original fence is under 10 years old, and we’ll recommend a quality aftermarket equivalent only when Therma-Tru has discontinued a profile. If you have the original invoice, the model code is printed on it. If you don’t, measure the post width and bring us a clear photo of the rail-to-post connection before we order anything.
Styles & brands we work with
Signs Your Therma-Tru Fence Installation Is Failing
- Posts kicking out at the base. In Los Angeles, this almost always traces back to shallow footings or posts set in expansive clay soil. The ground swells after winter rain, shrinks through summer, and the post slowly walks out of plumb. The post itself is rarely the problem; the footing is.
- Gate dragging or refusing to latch. The hinge side post has shifted, or the gate frame has twisted because a builder hung a heavy gate on a single post without a steel insert. We see this constantly on hillside lots in Silver Lake and Echo Park, where gravity never takes a day off.
- Rails snapping at the post pocket. Therma-Tru rails slide into routed pockets in the post. When wind loads exceed what the pocket was designed for, the rail splits right at the entry point. This is a materials-pairing issue, not a manufacturing defect.
- Hairline cracks running up the pickets. That’s UV degradation working on the outer skin. Los Angeles sun is harder on composite fence material than most climates in the country, and a fence with full western exposure ages faster than one tucked against a north wall.
- White chalky residue on your hands after touching the fence. That’s surface oxidation. It doesn’t mean the fence is shot, but it does mean the protective outer layer is breaking down and will need more than a pressure wash to restore.
See the difference
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After
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After
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AfterReplacement Cost & What’s Included
For a typical Los Angeles yard, you’re looking at $4,130 to $10,620 installed. Here’s what drives the spread:
- Linear footage: More fence, more material, more post holes. A 40-foot side yard wall is a different job than a 150-foot perimeter.
- Existing concrete: If we’re pulling old posts out of a concrete footing or cutting new holes through a slab, labor hours climb.
- Access: Hillside lots, narrow side yards, and fences that butt against retaining walls all slow the job down.
- Gate hardware: A single walk gate is standard. A double drive gate with a heavy frame and closers adds real cost.
Every quote is line-itemed: panels, posts, rails, fasteners, concrete, labor, haul-away of the old fence if we’re removing one. You get a written price before we start, and it doesn’t change unless you change the scope. The installation is covered by our 365-Day Done Right Promise: if the fence isn’t right within a year of completion, we come back and make it right at no cost.
DIY or Call Us?
You can safely check your post footings by pulling back the soil at the base and looking for cracks in the concrete collar. You can also check your gate hinges for play and tighten loose screws, which solves a surprising number of latch problems. What you don’t want to DIY is pulling and re-setting posts. A post hole in Los Angeles can be three feet deep, and a Therma-Tru post with a steel insert is heavy enough that a slip goes wrong fast. We’ve also had to re-do homeowner attempts where the post was set with half a bag of quick-set in a hole that wasn’t wide enough, and the fence failed within two seasons. If the post is moving, call us at (803) 680-2547. We’ll look at it, tell you if it’s one post or the whole run, and give you a written price either way.
FAQs
A properly installed Therma-Tru fence in Los Angeles should last 20 to 30 years, though full sun exposure and clay soil movement can shorten the effective life of the post footings before the panels themselves fail. Call (803) 680-2547 if you want us to assess whether your fence is aging normally or failing early.
Yes, in many cases a leaning post can be straightened and re-set with a proper concrete footing if the post itself isn’t cracked or rotted, but if the post sleeve has split or the rail pockets are compromised, replacement is the honest fix. Call (803) 680-2547 and we’ll tell you which one you’re dealing with before any work is scheduled.
Most Therma-Tru fence installations in the Los Angeles area take two to four days once materials are delivered and the crew starts, with the exact timeline depending on linear footage and how many old post holes need to come out. Call (803) 680-2547 for a written estimate with a realistic timeline for your specific property.
We stock common Therma-Tru-compatible fence panels, posts, rails, and gate hardware on our trucks, but specialty colors and discontinued profiles usually need to be special ordered, which adds a few days to the project. Call (803) 680-2547 with your model details and we’ll check availability while you’re on the phone.
If your Therma-Tru fence is failing, don’t wait until a section comes down in the next wind storm. Call Mason Remodeling at (803) 680-2547 for a free estimate. Isaac Pruett grew up in the Valley, learned the trade at Los Angeles Trade-Technical College, and he’s spent two decades remodeling homes across this city. He knows what a Los Angeles fence has to stand up to because he’s been replacing the ones that didn’t. Know who’s coming, know what it costs, know it’s backed up, everything else is just noise.
Written by Isaac Pruett, Owner, Mason Remodeling at Mason Remodeling, serving Los Angeles and nearby areas.
