Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Therma-Tru Fence Installation: The San Jose Owner’s Guide
Therma-Tru fence installation in San Jose runs $4,130 to $10,620 installed, depending on linear footage, post depth, and gate hardware. We stock Therma-Tru post kits, rails, and pickets on the truck, so most replacements go in same week, not same month. The telltale sign owners call us about: a gate that drags on the concrete or a fence line that’s started to lean after the winter rains softened the clay soil under the posts.
Therma-Tru’s fence line is less famous than their entry doors, but it’s built on the same principle: fiberglass and composite components that don’t rot, warp, or split the way wood does in San Jose’s wet-dry cycles. When a section fails, it’s almost never the panel itself. It’s the post footing, the hinge hardware, or a gate that was hung without enough clearance for the slope. We see it in Almaden Valley and Willow Glen both: same failure modes, different soil.
Which Therma-Tru Models This Applies To
Therma-Tru’s fence and rail program covers their Classic Composite and Fiber-Classic series, plus the newer SmoothStar rail profiles. The post has a Therma-Tru stamp on the bottom cap and a model code printed on the inside wall of the post near the base. Get the code and we can match it in minutes, not catalog-browse for a week. If the stamp’s worn off, measure the post width: the Fiber-Classic line runs 4×4 and 5×5, while SmoothStar tops at 4×4. That gets us to the right part 90% of the time.
Here’s the compatibility gotcha most San Jose homeowners run into: Therma-Tru fence posts are not universal. A Fiber-Classic post won’t take a SmoothStar rail without an adapter bracket, and the Classic Composite gates use a different hinge barrel than the fiberglass lines. Aftermarket posts are tempting at half the price, but they don’t have the UV stabilizer blend Therma-Tru specs for California sun. In San Jose, cheap aftermarket posts chalk and fade in three years; Therma-Tru’s go a decade before the color starts to shift.
Styles & brands we work with
Signs Your Therma-Tru Fence Installation Is Failing
- Gate drags at the latch side. The hinge post has moved out of plumb, usually because the concrete footing was poured below the frost line or the post wasn’t set in a full-depth base. Tightening hinges is a band-aid; the post needs resetting.
- Panel sags between posts. Therma-Tru rails are drilled for standard 6-foot spacing. If the installer stretched post spacing past that to save on concrete, the rail bows over time. We see it on San Jose hillside lots where crews cut corners to keep the fence line fast.
- Post leans toward the downhill side. San Jose’s adobe and clay soil expands in winter and shrinks in summer. A post set in plain concrete without a drainage base will heave and lean within two to three years.
- Hinge screws pull out of the post body. The fiberglass posts hold screws well, but if the gate was hung without a reinforcement block inside the post, the screw holes wallow out. Once that happens, the post is done; no wood filler or epoxy fixes a wallowed fiberglass hole.
- Pickets pop out of the bottom rail. This is almost always thermal movement from San Jose’s hot summers plus a rail that was cut too tight. Therma-Tru pickets need a 1/8-inch expansion gap per panel or they bind and pop in August.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
For a standard 6-foot-tall Therma-Tru fence in San Jose, you’re looking at $4,130 to $10,620 installed. The range is driven by four things: linear footage, post depth (hillside lots in the East Foothills need deeper footings), gate count, and whether we’re reusing existing posts or pulling and resetting them. Parts run about 40% of the total; labor and concrete make up the rest.
Every quote from Curtis Lane’s crew is a line-item written price before the first post hole is dug. The labor number covers digging, setting posts in gravel-bed concrete, hanging panels, squaring gates, and hauling off the old section. We back the completed work with the 365-Day Done Right Promise: if the fence fails inside a year, we come back and correct it at no charge. That’s in writing. The Garrison Standard says no verbal promises, and we hold to it.
DIY or Call Us?
Fence work won’t send you to the ER the way a garage spring will, but it will burn your weekend and half your patience. What an owner can safely do: measure the post spacing, check plumb with a 4-foot level, and snap a photo of the stamp on the post base. That gives us enough to quote a ballpark over the phone.
Where DIY goes wrong in San Jose is the footing. Digging a 30-inch post hole in adobe is brutal by hand, and an auger on a hillside is a quick way to a rolled ankle. Then you’ve got the concrete, the drainage base, and getting the gate square. If the post is moving, the base is the disease; everything else is symptoms. Call (669) 272-2637 and we’ll send a background-checked, uniformed tech to look at the line and give you a written number. No charge for the estimate, and the price won’t move at your door.
FAQs
Therma-Tru’s fiberglass and composite fence materials carry a 20-plus year lifespan in this climate, while the footings and hardware typically need attention around year 10 to 15. The panels themselves won’t rot in San Jose’s wet winters, but posts set in poor drainage can fail in three to five years regardless of the panel quality. Call (669) 272-2637 and we’ll check the post bases before any panel money gets spent.
Yes, if the issue is a popped picket, a hinge, or a gate latch, that’s a repair, not a replacement. If the post has heaved, bent, or the screw holes are wallowed, the post has to be reset and that usually means pulling the section apart. We’ll tell you which side of that line your fence falls on and quote both numbers in writing.
A standard 40-to-60-foot replacement section takes one day with a two-person crew, including concrete cure time for gate posts. Full property lines with multiple gates run two to three days. We set the schedule in the written estimate and we hit it. Straight number, written scope, done when we said done.
We keep Therma-Tru post kits, rails, pickets, hinge hardware, and gate brackets on the truck for the common Fiber-Classic and SmoothStar sizes. Odd-sized posts or special-order panels go through our Therma-Tru supplier and typically land in San Jose inside five business days. Count on a written lead time in the quote, not a guess.
If your Therma-Tru fence needs a matching part and a crew that won’t leave the site until it’s square, call (669) 272-2637 for a free estimate. We’ll price the work in writing before anything gets dug, and every job is covered by the 365-Day Done Right Promise.
Written by Curtis Lane, Owner, Bradford Remodeling Co at Bradford Remodeling Co San Jose, serving San Jose and nearby areas.
