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Therma-Tru Fence Installation: The San Antonio Owner’s Guide
Therma-Tru fence installation in San Antonio typically runs $3,500 to $9,000 for a complete perimeter fence with Therma-Tru gate hardware and matching components, and we can usually get it installed within two to three weeks of your written estimate. Most homeowners call us after a gate post leans, a latch stops catching, or a section of fence starts pulling away from the house. We’ll match the Therma-Tru product line to your existing setup, source the right components, and install everything with a written price before work starts.
Which Therma-Tru Models This Applies To
Therma-Tru is better known for entry doors than fence lines, which means if you have Therma-Tru fencing or gate hardware on a San Antonio property, it’s almost certainly tied to a Therma-Tru door system integrated with your fence perimeter, or a gate frame built around a Therma-Tru fiberglass door slab. The compatibility gotcha: Therma-Tru fiberglass door slabs in gate applications need a reinforced frame and heavy-duty hinge set rated for exterior gate duty. A standard interior-weight hinge will sag within eighteen months in San Antonio heat. We check hinge leaf thickness, hinge count, and frame reinforcement before quoting, because a gate door that weighs 80 pounds needs at least three 4-inch ball-bearing hinges, not the two 3-inch hinges a standard entry door uses.
When it comes to replacement parts, owners have two paths: genuine Therma-Tru components (door slabs, weatherseal, hinge plates, sill caps) or quality aftermarket equivalents that match the Therma-Tru profile. For fence gates and integrated door-and-fence assemblies, we recommend OEM Therma-Tru weatherseal and sill components because the profile tolerances are tight. For hinges, brackets, and gate hardware, commercial-grade aftermarket parts from brands like National Hardware or Stanley often outlast the originals in Texas sun and wind. We stock both on the truck for most common Therma-Tru gate sizes.
Styles & brands we work with
Signs Your Therma-Tru Fence Installation Is Failing
- The gate drags on the ground or rubs the latch post. This means the gate frame or post has shifted out of square, usually because the post footing wasn’t set deep enough for San Antonio’s expansive clay soil. When clay expands after rain and contracts in drought, shallow posts move. We dig and set replacement posts to a depth below the frost line and use concrete with a drainage base so water doesn’t pool at the post bottom.
- The latch won’t catch unless you lift the gate. Hinge wear is the usual culprit. A worn hinge pin lets the gate sag just enough that the latch misses. Sometimes it’s a two-minute pin replacement. Other times the entire hinge set needs replacing and the gate re-hung. We’ll tell you which one before we touch anything.
- The door slab in a fence gate swells and sticks after rain. Fiberglass Therma-Tru slabs resist moisture better than wood, but the frame around them may not be. If the gate frame wasn’t flashed or sealed correctly when it was built, water gets behind the slab and swells the rough opening. Fixing it right means pulling the slab, repairing or replacing the frame, and reinstalling with proper flashing. Sealing over the top without fixing the frame just traps moisture.
- Gaps appear between the fence section and the house or gate post. San Antonio’s freeze-thaw cycles and clay soil movement separate fence sections from fixed points. If the gap is new and the weather just shifted, we may need to re-secure the connection with proper anchors. If the post itself is leaning, it needs replacement, not re-anchoring.
- You see rust stains running from hinges or hardware. Coastal-adjacent humidity in San Antonio, combined with sprinkler overspray, eats unprotected hardware fast. Staining means the hardware is failing and needs replacement with stainless or powder-coated components before the gate sags or falls.
Replacement Cost & What’s Included
For Therma-Tru fence installation in San Antonio, plan on $3,500 to $9,000 for a complete install. Where your project falls depends on linear footage, gate count, whether we’re setting new concrete footings or rebuilding existing ones, and whether the Therma-Tru door slab is being reused or replaced. A single gate post replacement with re-hanging runs $400 to $900. A full fence with one Therma-Tru gate assembly typically lands between $4,000 and $6,500. High-end runs with multiple gates, steel post reinforcement, and premium hardware reach the $9,000 mark.
Every estimate is written line-item, so you see material and labor separated and know exactly what each component costs before you approve anything. No verbal ballpark that grows on the final invoice. Work includes post removal, new footing if required, hardware replacement or upgrade, and alignment. We back the workmanship for 365 days from the completion date. If something we installed fails in that window, we return and make it right at no charge.
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If the gate is dragging, you can safely check whether the hinges are tight and whether the latch plate has loosened. A screwdriver and ten minutes will tell you a lot. What we’d warn against: pulling a gate post and guessing at the footing depth, re-hanging a heavy Therma-Tru slab by yourself, or trying to square a frame without a come-along and a level. A gate door under tension, with a slab that weighs more than you expect, can come off its hinges fast and hurt someone. We’ve seen homeowners end up with worse damage than what they started with. If it’s more than a loose screw or a hinge pin swap, call (254) 269-5071 and let us price it. The estimate is free.
FAQs
With proper post depth and concrete footings sized for our clay soil, the structural frame and hardware should last 15 to 25 years. The Therma-Tru door slab itself, if maintained and sealed, can last 25 years or more. In San Antonio, the things that shorten that lifespan are shallow posts, untreated hardware, and irrigation overspray on gate hinges. We design against all three from day one. Call (254) 269-5071 if you want an honest read on whether your existing fence has years left or needs work now.
Yes, most gate problems are repairable. A sagging gate usually needs new hinges or a post reset, not a new slab. A sticking slab usually means frame repair, not slab replacement. We only recommend replacement when the slab itself is cracked, delaminated, or the frame has rotted to the point where it can’t hold fasteners. We’ll show you the damage and explain the choice.
A single gate post replacement or re-hang takes half a day. A full fence perimeter with one or two gates usually takes two to three days, depending on concrete cure time. We let footings cure properly before we hang gate slabs, because hanging a heavy Therma-Tru door on wet concrete means doing the job twice. Call (254) 269-5071 for a schedule estimate specific to your scope.
We keep common Therma-Tru-compatible components on the truck: weatherseal, hinges, latch hardware, and frame brackets. For unusual slab sizes or specific Therma-Tru profiles, we can source through our supplier network alongside brands like KraftMaid, Cambria, and Silestone for larger remodeling scopes. We verify availability before we schedule so you’re not waiting on a backorder.
Get a Written Price Before You Commit
If you have a Therma-Tru gate or fence installation showing age, call (254) 269-5071. We’ll schedule a visit, assess the fence in person, and deliver a written, line-item price before any work begins. You’ll know exactly who is coming, what it costs, and what’s covered. As Isaac Pruett puts it: “Know who’s coming, know what it costs, know it’s covered – that’s the whole job before the job starts.”
We’re an independent service provider, not affiliated with Therma-Tru, which means we give you straight advice: fix what needs fixing, replace only what’s failed, and never push a part you don’t need. Free estimates, written prices, and a 365-day workmanship guarantee on every Therma-Tru fence installation in San Antonio.
Written by Isaac Pruett, Owner, Mason Remodeling Co San Antonio at Mason Remodeling Co San Antonio, serving San Antonio and nearby areas.
