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Therma-Tru Fence Installation: The Orange County Owner’s Guide
If you have a Therma-Tru fence product that’s failing, here’s the short version: we install Therma-Tru-compatible fence systems throughout Orange County, with most full fence installations running $3,500 to $9,000 depending on linear footage, gate hardware, and post work. Most owners call us after a gate sags, a post leans, or a latch stops catching. You’ll usually notice the problem at the worst possible time, because that’s how fences work.
Which Therma-Tru Models This Applies To

Therma-Tru is best known for fiberglass and steel entry doors, but their fence line (now linked to their broader exterior systems catalog) includes vinyl and composite privacy fence panels, post wraps, and coordinating gate kits. The compatibility gotcha most homeowners run into: Therma-Tru fence panels are designed with a specific post profile, and a generic post from a big-box store often sits proud or recessed by a half inch, which throws off gate alignment. If you’re matching existing panels, check the embossed code on the inside face of a panel near the bottom rail. That code tells us the series and the exact extrusion profile. We’ll match it with an OEM-spec post or a quality aftermarket equivalent that holds the same reveal. For most Orange County homes, the aftermarket post from a California distributor is the better value, but when the gate hardware is Therma-Tru branded, we recommend staying with the OEM hinge kit so the swing arc stays true.
One thing to know up front: Penhallow Remodeling Orange County is an independent contractor. We’re not affiliated with Therma-Tru, but we work with their fence products regularly, source through the same regional channels as authorized dealers, and stand behind our installation with our own written guarantee.
Styles & brands we work with







Signs Your Therma-Tru Fence Installation Is Failing
- Gate drags or won’t latch cleanly. This is almost always hinge sag or a post that’s drifted out of plumb. In Orange County’s clay-heavy soil, posts shift seasonally as the ground expands and contracts.
- Post leans even an inch. A leaning post means the footing has failed or was never set deep enough. It won’t fix itself, and every storm makes it worse.
- Panel rattles in the wind or lifts at the corner. This points to a broken or stripped bracket where the panel meets the post. Santa Ana winds find these weak points fast.
- Bottom rail bowed or cracked. Composite and vinyl expand in direct sun. Orange County summers hit 90+ degrees regularly, and a panel installed without proper expansion clearance will buckle.
- Gate closes fast on its own or slams. The self-closing hinge tension has failed or was never set right. We see this a lot on Irvine properties where homes were built in the 1980s and 90s and the original gate hardware is past its life.
See the difference
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After
Before
After
Before
AfterReplacement Cost & What’s Included
For Orange County, a Therma-Tru-compatible fence installation typically runs $3,500 to $9,000. What drives the number: linear footage is the biggest factor, followed by gate count (each gate needs posts, hinges, latch hardware, and alignment time), whether we’re pulling and resetting existing posts or driving new ones, and access. A fence along a zero-lot-line side yard in Irvine takes longer and costs more than a straightforward back fence with open access. The written price we give you before work starts covers the parts, the labor, the post concrete, the gate hardware, and cleanup. We don’t hand you a range and then bill for surprises. The number on your written estimate is the number on your invoice. And our work carries a 365-Day Done Right Promise: if the gate sags or a post shifts inside a year, we come back and fix it at no charge. That’s in writing, every time.
DIY or Call Us?
Fence work is not a high-tension danger like a garage door spring, so if you want to check a few things yourself, go ahead. You can confirm which panels are loose, mark where the gate drags, and measure your total linear footage. What goes wrong in DIY: posts set without proper depth (Orange County code generally requires 24 to 30 inches depending on soil and wind exposure), expansion gaps ignored so panels buckle in July, and gates hung with the wrong hinge orientation so they bind. A bad post set means the whole section comes out and starts over. That’s the expensive kind of do-over. If you’d rather have it right the first time, call Penhallow Remodeling Orange County at (424) 541-1701 for a free estimate. Trevor Nash and the team will price it before any work starts, and that price won’t move. As Trevor puts it: give you the number first, then pick up the tool.
FAQs

With proper post depth and expansion clearance, a Therma-Tru-compatible vinyl or composite fence in Orange County should last 20 to 30 years, with gate hardware replacement typically needed every 8 to 12 years due to our dry heat and Santa Ana wind cycles. Coastal homes in Huntington Beach or Newport Beach may see slightly faster hardware wear from salt air. Call (424) 541-1701 for an exact assessment of your fence.
In most cases yes. If the panels are intact and the issue is post lean, gate sag, or failed hardware, we can reset and reinforce without pulling the whole fence. We’ll repair a single section rather than sell you a full replacement if that’s what the condition calls for. Call (424) 541-1701 and we’ll tell you straight what needs replacing and what doesn’t.
A typical Orange County fence installation of 50 to 100 linear feet takes 2 to 3 working days, including post setting, panel installation, gate hardware, and cleanup. A simple post reset or gate repair is usually a same-day job. You’ll get a written schedule before we start.
We carry common post profiles, hinge kits, latches, and panel brackets on our trucks, and we stock parts for other brands we work with regularly, including KraftMaid, Cambria, and Silestone. If a Therma-Tru-specific profile needs to be ordered, we handle that through our Southern California distributors and schedule the work as soon as it arrives. Call (424) 541-1701 and we’ll confirm availability and a written price.
No. The written price you receive before work begins is the price you pay. If we uncover something unexpected, like a rotted post base or an underground irrigation line, we stop and talk to you before any additional work is done. You approve it in writing first, or we don’t do it.
Written by Trevor Nash, Owner, Penhallow Remodeling Orange County at Penhallow Remodeling Orange County, serving Orange County and nearby areas.


