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Therma-Tru Construction in Ben Lomond, CA | Workshop Contractors
We provide independent Therma-Tru construction service across Ben Lomond, CA, from entry-door reframing and weatherseal replacement to full fiberglass door installations, plus Brookdale Therma-Tru service. What makes our Therma-Tru work different here is that we build for slope, fire, and winter rain the way mountain lots demand, not the way a flatland track-home crew would. We’re a general contractor, not a manufacturer affiliate, and we’ve installed and serviced Therma-Tru doors on Santa Cruz Mountains homes for years. Call (844) 384-3361 to schedule your free estimate.
Why Ben Lomond Residents Choose Us for Therma-Tru Service
Most Ben Lomond homes aren’t built on flat concrete slabs. They sit on pier-and-beam floors, post foundations, and steep grades where a door frame that was square in August can be racked half an inch out by February. We know Therma-Tru’s fiberglass slabs and prehung jambs well enough to predict how they’ll behave when the ground under them moves. Noel Figueroa, our owner and general contractor, learned framing from the same generation of tradesmen who built half the houses on his street in Ontario, and he brought that habit of checking square, sill, and seal onto every mountain job since. We use Therma-Tru OEM glazing stops, sweeps, weatherseal, and hinge parts wherever the slab is sound. When a slab is chalked through or the jamb has rotted at the sill, we say so plainly and recommend replacement instead of a patch. The goal is a door that sheds water and closes square for years, not one that looks fine from the street and wicks rain at the threshold within a season.
Styles & brands we work with







Common Therma-Tru Construction Problems We Solve in Ben Lomond
- Racked slabs on pier-and-beam floors. Post foundations and pier-and-beam floors settle independently of the door frame. A Therma-Tru slab sticks at the latch-side stile and the reveal goes out of parallel long before the fiberglass itself is worn out. We re-shim and re-square the prehung frame against the floor as it actually sits, then reset the threshold with a proper sill pan.
- Chalked and sun-oxidized fiberglass on south- and west-facing walls. Ben Lomond’s dry summers beat on entry doors that get full afternoon exposure. Factory paint film breaks down around glazing stops and stiles, and once the fiberglass substrate chalks through, refinishing is a short-term fix. We’ll tell you when it’s refinishable and when it’s a slab replacement.
- Rotted bottom rails from wind-driven rain. Atmospheric-river storms push water against thresholds on older redwood-era homes with shallow porch overhangs. Water wicks into the door sill and rots the bottom rail of the wood jamb behind the fiberglass slab. We replace the jamb, install a sill pan, and reseal so the next storm sheds off the door instead of under it.
- Worn sweeps and sidelite weatherstrip. A cosmetic gap at the sweep seal in town becomes a defensible-space and inspection problem on uphill Highway 9 lots. Ember and wind-driven rain intrusion at worn seals is one of the most common issues we repair on Ben Lomond Therma-Tru doors, and it’s usually fixable with OEM replacement sweeps and weatherseal without replacing the slab.
- Doors out of square after wet winters. Ben Lomond’s redwood-rooted slopes hold water and move seasonally. A door that closed fine in September can bind at the latch by March. We address the frame against the seasonal movement, not just the slab.
Therma-Tru Service in Ben Lomond: What Local Conditions Mean for Your Equipment
Ben Lomond’s uphill-side Highway 9 lots sit below saturated, redwood-rooted slopes that move after big winter rains. That’s not a generic mountain-climate line; it’s a specific condition that shapes how Therma-Tru entries perform here and nowhere else in the county. A Therma-Tru door on a pier-and-beam mountain cabin up a narrow private drive off Highway 9 often has to be re-squared and re-sealed against a foundation that shifts seasonally, not just swapped like-for-like. One redwood-era cabin we worked on had a Therma-Tru Smooth-Star entry that racked out of square after a wet winter. The sweep and sill weatherseal were shot. We re-shimmed and re-squared the prehung frame, replaced the OEM sweep and weatherseal, and reset the threshold with a proper sill pan so the next atmospheric river sheds off the door instead of wicking under it. That’s the difference between servicing a door and servicing a door on a moving mountain lot. Call (844) 384-3361 if your entry has started binding or leaking after a storm.
Therma-Tru Models & Products We Service in Ben Lomond
We service the full range of Therma-Tru fiberglass entry systems homeowners in Ben Lomond actually have: Smooth-Star fiberglass entry doors, the Fiber-Classic collection, Classic-Craft series doors with their wood-grain fiberglass slabs, and patio and sidelite assemblies with factory glazing. For replacement parts, we use Therma-Tru OEM glazing stops, sweeps, weatherseal, and hinge and hardware components wherever the slab is sound. When the OEM profile has been discontinued, we’ll use a quality aftermarket seal and tell you why. What we stock locally for fast Ben Lomond turnaround are the common wear items: sweeps, weatherseal profiles, sill pans, and shim stock. Slabs and prehung assemblies are ordered per job to match your rough opening and exposure. If you’re uncertain whether your door is Therma-Tru or a different manufacturer, we can identify it on site and give you an honest repair-or-replace recommendation.
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AfterTherma-Tru Service Pricing in Ben Lomond
Therma-Tru service pricing in Ben Lomond depends on whether we’re repairing weatherseal and hardware or replacing a slab, jamb, or entire prehung assembly. For reference, related envelope work in this area runs as follows:
| Service | Typical Range |
|---|---|
| Roof Replacement | $8,000 – $20,000 |
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
| Home Addition | $45,000 – $130,000 |
A Therma-Tru sweep, weatherseal, and adjustment call is a fraction of those numbers, but the exact price depends on whether the jamb is sound, whether the slab is square, and whether we’re working on a cabin up a narrow private Ben Lomond drive that requires hand-carrying material. Our free estimate includes a site visit, measurements, and a written line-item quote. Call (844) 384-3361 to schedule yours.
Serving Ben Lomond, CA — Our Local Coverage Area
We’re based in the Ben Lomond area and know this community well, and we also provide Therma-Tru in Lompico. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Therma-Tru Construction in Ben Lomond
No. Workshop Contractors is an independent general contractor. We are not a Therma-Tru authorized dealer or manufacturer affiliate. What we bring is years of hands-on installation and service experience on Therma-Tru fiberglass doors in Ben Lomond, including the specific ways these doors fail on sloped, pier-and-beam mountain lots. We use OEM parts where they matter and tell you plainly when a door is beyond repair, and we also offer Therma-Tru service in Felton. For a free estimate, call (844) 384-3361.
We use Therma-Tru OEM glazing stops, sweeps, weatherseal, and hinge hardware whenever the slab is sound and the part is still available. If the OEM profile has been discontinued, we’ll source a quality aftermarket seal and explain the difference before installing it. Fiberglass slabs and prehung jambs are matched per job to your rough opening and exposure. Call (844) 384-3361 and we’ll assess what your door actually needs.
Weatherseal, sweep, and minor re-square work is usually done in a single visit. A full slab or prehung replacement takes longer because we order the door to match your rough opening and schedule around weather, since we won’t leave a Ben Lomond home with an open entry during storm season. We’ll give you a clear timeline before work starts. Call (844) 384-3361 to schedule an assessment.
We service Smooth-Star, Fiber-Classic, and Classic-Craft fiberglass entry doors, plus patio and sidelite assemblies with factory glazing. If you’re not sure which line you have, we can identify it on site. Most Ben Lomond homes with Therma-Tru entries have one of these three fiberglass lines, and the failure patterns we see are consistent across them: sun chalk on exposed walls, threshold wicking on shallow overhangs, and racking on pier-and-beam floors.
A weatherseal and sweep replacement or a re-square adjustment is far less expensive than a full slab or jamb replacement, but the exact number depends on what we find when we open up the threshold and check the frame. Slab and prehung replacements run higher because the door is ordered to fit your opening. The only way to get an accurate Ben Lomond price is a site visit. Estimates are free. Call (844) 384-3361 to book one.
Service Areas Near Ben Lomond
We serve Ben Lomond and the surrounding mountain and valley communities, including Therma-Tru service in Bonny Doon, Therma-Tru service in Cambrian Park, Woodcrest, North Tustin, and Orange. If your home sits between the redwood ridges and the valley floor, we’ll come take a look. For broader coverage, see our Ben Lomond service area page or our main Therma-Tru sales & service page.
Book Your Therma-Tru Service in Ben Lomond Today
If your Therma-Tru door is binding, leaking, or showing sun damage, don’t wait for the next atmospheric river to find the gap. Call (844) 384-3361 to schedule your free estimate in Ben Lomond or for Mount Hermon Therma-Tru service. We’ll assess the door, the frame, and the slope under it, then give you a straight answer on repair versus replacement.
Written by Noel Figueroa, Owner at Workshop Contractors, serving Ben Lomond and the Santa Cruz Mountains. Build it right the first time. The second time costs twice as much and nobody’s happy about it.