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Therma-Tru Construction in Boulder Creek, CA | San Bernardino Contractors
We provide independent Therma-Tru door installation, repair, and replacement throughout Boulder Creek (95006) and Therma-Tru in Felton, and what sets our work here apart is simple: we understand how these doors actually behave in a fire-hardened mountain town. Between the Chapter 7A code requirements, the steep canyon drainage, and the mix of surviving cabins and post-CZU rebuilds, a Therma-Tru door on a Boulder Creek home has to do more than swing open and closed. We’re not a Therma-Tru dealer, and we’re not manufacturer-affiliated. We buy the same product you can buy, install it correctly for this climate, and stand behind the work. Most commercial door installers don’t know Boulder Creek. We do. Call (855) 473-5620 for a free estimate.
Why Boulder Creek Residents Choose Us for Therma-Tru Service
Ruben Castillo, our owner, grew up learning construction the hard way: watching his uncle frame garages and reroof houses on weekends in San Bernardino, then sharpening that into formal training at San Bernardino Valley College. He’s spent two decades hanging doors, squaring rough openings, and fixing what other installers left racked or leaking. That background matters in Boulder Creek, where a door that’s off by a quarter inch on a sloped cabin entry will bind every winter as the pier blocks shift with the rain.
We’re an independent contractor, not a Therma-Tru authorized dealer, which means we answer to you, not to a distribution agreement. We stock genuine Therma-Tru replacement slabs, sills, sweeps, and multipoint hardware where the door system is sound, and we use quality aftermarket weatherseal and sill pans where the OEM part struggles in mountain weather. If you need Therma-Tru sales & service from a crew that actually works in unincorporated Santa Cruz County, you’ve found the right contractor.
Styles & brands we work with
Common Therma-Tru Construction Problems We Solve in Boulder Creek
These aren’t hypotheticals pulled from a brochure. They’re the failures we see repeatedly on canyon lots and fire-scarred parcels around Boulder Creek.
- Bottom rail splitting on wood-grain fiberglass slabs. When a threshold sits below grade on a sloped lot and winter rain runs against the sill for months, moisture wicks up into the slab and the bottom rail eventually splits. We see this on the older canyon-side entries where drainage was never properly routed away from the foundation.
- Racked frames and binding slabs from seasonal soil movement. Homes on pier-and-grade foundations or long driveways with marginal drainage settle and shift through the wet season. The rough opening pulls out of square, and a door that latched fine in September starts binding by February.
- Sun-chalked finishes and embrittled weatherstripping on south- and west-facing entries. The CZU burn scar opened up afternoon sun exposure on surviving homes. Pre-2020 Therma-Tru doors with steel-edge or wood-edge construction now show heat-cycled finishes and weatherstripping that’s gone brittle.
- Ember intrusion at the sweep and sidelite glazing. Older cabins that pre-date ignition-resistant construction never got the full Chapter 7A treatment. A door with a worn sweep or non-tempered sidelite glass is an ember entry point during fire season, and it fails a county defensible-space review.
- Below-grade thresholds on rebuilds and remodels. When a burned-over lot gets rebuilt, the new foundation sometimes sits lower than the original. That puts the new Therma-Tru door’s threshold below the surrounding grade, and the first heavy rain season pools water at the sill.
Therma-Tru Service in Boulder Creek: What Local Conditions Mean for Your Equipment
Boulder Creek sits squarely in the Santa Cruz Mountains’ high-severity wildland-urban interface, which means a door or window change on a rebuild or addition usually has to be specified as a Chapter 7A ignition-resistant assembly and coordinated with a defensible-space plan, not just sized to the rough opening. That’s the single biggest difference between our Therma-Tru work here and the same service in San Jose, Scotts Valley, or Therma-Tru repair in Ben Lomond. A homeowner on a steep lot above Bear Creek Road can’t just swap a door. The county wants the entry to resist embers, the glazing to handle radiant heat, and the overall assembly to pass a fire-defensible-space review. We handle that coordination. On a burned-over lot above Boulder Creek, we set a new Therma-Tru Fiber-Classic entry into a rebuilt wall on a steep driveway with limited water for firefighting, and the original builder-grade door’s bottom rail had already split from years of winter runoff pooling at a below-grade threshold. We re-flashed and raised the sill, shimmed the frame square on the slope, and specified an ember-resistant sweep and Chapter 7A-compliant sidelite glazing so the entry could pass county review. That’s what Therma-Tru service means in Boulder Creek: it’s a building-envelope decision, not just a door swap.
Therma-Tru Models & Products We Service in Boulder Creek
We work on the full Therma-Tru lineup that shows up in Boulder Creek homes: Fiber-Classic entry doors, Smooth-Star fiberglass slabs, Classic-Craft American Style collection doors, and the Benchmark and Profiles builder-grade units common on pre-CZU cabins and the newer rebuilds. For repairs, we lean on genuine Therma-Tru replacement slabs, sills, sweeps, and multipoint hardware when the frame is sound. Where the OEM part is discontinued or honestly underperforms in mountain weather, we switch to quality aftermarket weatherseal, sill pans, and hardware. Our repair-vs-replace rule is honest: a solid Therma-Tru frame gets repaired; a rotten or fire-noncompliant assembly gets replaced, especially if you’re already in scope for Chapter 7A upgrades. We carry common sweep profiles and weatherseal locally so a Boulder Creek service call doesn’t stall waiting on a backordered part.
See the difference
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AfterTherma-Tru Service Pricing in Boulder Creek
Most Therma-Tru work in Boulder Creek lands within the ranges below. What moves the number is access: a door on a flat, easy-reach street lot costs less to service than one at the end of a steep, narrow private drive off Highway 9, where we’re hauling materials up by hand or coordinating with a delivery that can’t make the turn.
| Service | Typical Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
| Roof Replacement | $8,000 – $20,000 |
A free estimate from us includes a look at the rough opening, the threshold drainage, and whether your door meets current Chapter 7A expectations for Boulder Creek. Call (855) 473-5620 to schedule one.
Serving Boulder Creek, CA — Our Local Coverage Area
We’re based in the Boulder Creek area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help. We also offer Therma-Tru service in Brookdale and surrounding mountain communities.
FAQs – Therma-Tru Construction in Boulder Creek
Does a Therma-Tru door on a Boulder Creek rebuild need to be fire-rated?
Yes, in most cases. Boulder Creek is in the high-severity WUI, so any door or window change on a rebuild or exterior remodel usually has to be specified as a Chapter 7A ignition-resistant assembly. That doesn’t always mean a labeled fire door; it means the assembly, including the sweep, glazing, and framing, has to resist ember intrusion and radiant heat. We coordinate that with the county’s defensible-space review. Call (855) 473-5620 if you’re unsure what your project triggers.
Can you replace just the Therma-Tru slab if my frame is still solid?
Yes. If the rough opening is square, the threshold is sound, and the jamb isn’t rotted or racked, a genuine Therma-Tru replacement slab bolts right in and saves you the cost of a full tear-out. If the frame is compromised, particularly on a steep Boulder Creek lot where runoff has been working on the sill, we’ll tell you straight that a slab swap is throwing good money after bad. Call (855) 473-5620 and we’ll assess it.
Why does my Therma-Tru door keep binding every winter?
On Boulder Creek slopes, it’s almost always soil movement. Rainwater saturates the ground, pier blocks or shallow footings shift, and the rough opening pulls out of square. The door binds at the top or the latch side. The fix isn’t a new slab; it’s re-shimming the frame and often addressing drainage so the ground stops moving. Each wet season it returns until the water is routed away.
Do you handle the county permitting for a door or window change in unincorporated Boulder Creek?
We do. Boulder Creek is unincorporated Santa Cruz County, which means plans, permits, and defensible-space documentation go through the county, not a city building department. We pull the permits, coordinate the Chapter 7A review where it applies, and schedule inspections. After the CZU fire, the county is specific about what they’ll sign off on.
My older cabin has single-pane windows near a new Therma-Tru entry. Should I upgrade them together?
Usually yes. Single-pane windows on a Boulder Creek cabin are both an energy liability in winter and an ember-entry point in fire season. If we’re already re-flashing the entry and upgrading the door assembly to Chapter 7A, doing the adjacent windows at the same time saves you a second mobilization and keeps the whole wall assembly consistent. Call (855) 473-5620 for a package price.
Service Areas Near Boulder Creek
We work throughout the San Lorenzo Valley and the surrounding mountain communities. Our Therma-Tru crews cover Boulder Creek, Ben Lomond, Brookdale, Felton, and the rural parcels off Highway 9 toward Santa Cruz. You’ll also find us on similar work in Therma-Tru service in Saratoga and Therma-Tru service in Santa Clara when the job takes us over the hill. For the full picture, see our Boulder Creek service area page.
Book Your Therma-Tru Service in Boulder Creek Today
If your Therma-Tru door is binding, leaking, or simply not up to current fire code, don’t wait for the next rain or the next fire season. Call (855) 473-5620 to schedule your free estimate. We’ll come out, look at the opening, and tell you honestly whether it’s a repair or a replacement. You pick the brand, we handle the build.
Written by Ruben Castillo, Owner at San Bernardino Contractors, serving Boulder Creek and the Santa Cruz Mountains.