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Therma-Tru Construction in Felton, CA | Milpitas Construction
We install and service Therma-Tru door systems throughout Felton — and nearby communities like Therma-Tru repair in Mount Hermon — as an independent construction crew, not a manufacturer affiliate. The difference here comes down to knowing how redwood-shade dampness, steep-lot settlement, and Chapter 7A ember rules affect every slab, hinge, and sweep we touch. If your Therma-Tru entry or patio door is sticking, rotting, or leaking air in Felton, call (877) 752-4194 and we’ll give you a straight answer on repair versus replacement.
Ken Stafford leads our crew, and he’s spent more than two decades in Bay Area construction working on homes that have to handle real soil movement and moisture. We work with Therma-Tru sales & service across the San Lorenzo Valley, which means we know these doors from the rough opening out. We spec materials by name, so you know exactly what’s going into your home.
Why Felton Residents Choose Us for Therma-Tru Service
Felton homes are a different animal, just as they are for neighbors seeking Therma-Tru repair in Ben Lomond. A door that performs fine in a flat, sunny subdivision will fail early up here if it isn’t flashed, sealed, and adjusted for damp shade and shifting ground. We’ve pulled apart enough Felton entryways to know which Therma-Tru models hold up in this climate and which details make the difference between a ten-year door and a three-year headache.
Ken got his construction foundation at Evergreen Valley College, then spent two-plus decades building and remodeling in the Bay Area’s seismic and soil conditions. His dad was a finish carpenter who believed in work you’re not embarrassed to stand behind, and that’s the standard we bring to every Felton job. We source OEM Therma-Tru replacement slabs, glass inserts, and hardware kits when the frame is sound. For older doors with structural rot or warping, we tell you straight: patch it, or replace it with a modern Therma-Tru fiberglass system.
We’re one of the few general contractors with active access to 50+ brand-name product lines spanning every major trade. That means when your door opening needs framing correction, new flashing, or adjacent siding work, the same crew handles it under one contract and one point of contact.
Styles & brands we work with







Common Therma-Tru Construction Problems We Solve in Felton
- Fiberglass skin cracking and bubbling near the bottom rail. Felton’s winter rain and fog keep door slabs saturated for weeks at a time. Hairline cracks let moisture behind the skin, and you get bubbling or delamination right where the slab meets the threshold. We replace the slab when the frame is still square, and we upgrade the flashing at the same time.
- Rotted wood stiles and rails on older units. Redwood-shade dampness is relentless. The factory finish on an older Therma-Tru door breaks down, and water creeps into the wood stiles and rails from the inside out. By the time you see paint peeling at the edges, the core is usually compromised. We open these up, show you what we found, and recommend a fiberglass replacement when the rot has structural reach.
- Flattened, torn weatherstripping and door sweeps. In a Felton home with Chapter 7A wildfire exposure, a failed sweep isn’t just a draft. Embers can work through a gap at the threshold. We replace weatherstripping and sweeps with ember-resistant materials spec’d for mountain interface zones.
- Warped slabs binding at the latch side. Steep-lot homes shift. When the ground moves, the rough opening goes out of square, and a Therma-Tru slab that used to latch clean starts binding at the strike plate. Sometimes it’s a hinge adjustment. Sometimes the rough opening needs real correction. We tell you which one you’re looking at before we touch anything.
- Patio door rollers and tracks failing from debris and damp. Felton lots have tree litter and moisture working against sliding patio door hardware all year. Rollers grind, tracks clog, and the door gets heavy. We service Therma-Tru patio door systems and replace worn hardware before the panel itself gets damaged.
Therma-Tru Service in Felton: What Local Conditions Mean for Your Equipment
Felton’s building department enforces Chapter 7A ember-resistant construction requirements for exterior doors and windows on many remodels and additions. That’s not a guideline. It’s a code requirement tied to our location in the redwood-forest interface of the San Lorenzo Valley. What it means for Therma-Tru owners is concrete: many installations here need ember-resistant weatherstripping, protected glazing on sidelights, and sill details that resist ember intrusion. A contractor who doesn’t work in Felton regularly might not flag these requirements until the inspector does. We spec for them from the first conversation because we know this jurisdiction.
On many Felton lots, the buildable envelope is also constrained by redwood canopy and slope. Root protection zones, drainage and erosion control, and replacing wood doors that fail early in the damp shade are part of nearly every project we quote. That’s the reality of serving Felton service area homes, and it shapes how we approach every Therma-Tru installation here.
In a redwood-shaded Felton cottage — similar to homes needing Therma-Tru repair in Lompico — our crew replaced a rotting Therma-Tru Fiber-Classic entry door that had been saturated by years of fog drip and winter rain. We upgraded the rough opening flashing, installed a new Fiber-Classic slab with ember-resistant weatherstripping, and finished with a moisture-blocking paint system. That homeowner now has a door that seals tight and meets defensible-space expectations. That’s the standard on every Felton job.
Therma-Tru Models & Products We Service in Felton
We service the Therma-Tru Fiber-Classic entry door line, the Smooth-Star fiberglass series, the Classic-Craft door series, and Therma-Tru patio door systems. When a frame is sound, we source OEM Therma-Tru replacement slabs, glass inserts, and hardware kits rather than forcing aftermarket parts that don’t match the original weatherstripping profile or hinge prep. For Felton turnaround, we keep common OEM weatherstripping, sweeps, and adjustable hinges on hand or available quickly through our supplier network. If you need a full replacement, we’ll walk you through which Therma-Tru lines make sense for a fog-prone, ember-exposed mountain home, and which glass packages meet the fire-safety requirements the Felton building department is going to ask about.
See the difference
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AfterTherma-Tru Service Pricing in Felton
Every Felton door job prices differently depending on whether we’re adjusting an existing slab, replacing weatherstripping and sweeps, or pulling the whole unit and correcting an out-of-square rough opening. Here’s what window and door replacements run in this market:
| Service | Price Range |
|---|---|
| Window Replacement (per door/opening) | $4,500 – $15,000 |
| Impact Window Installation (per opening) | $8,000 – $25,000 |
What drives the cost in Felton specifically: access on sloped lots, root protection zones that limit staging, Chapter 7A material upgrades, and the condition of your existing rough opening. A free estimate from us includes a straight quote on the door, the surrounding framing, and any code-required details. Call (877) 752-4194 to schedule one.
Serving Felton, CA — Our Local Coverage Area
We’re based in the Felton area and know this community well, with service extending to nearby communities including Scotts Valley Therma-Tru service. Use the map below to see our full coverage — if you’re nearby, we can almost certainly help.
FAQs – Therma-Tru Construction in Felton
On many remodels and additions, yes. Felton’s building department enforces Chapter 7A ember-resistant construction requirements for exterior doors and windows, which means ember-resistant weatherstripping and protected glazing are often mandatory rather than optional. We spec these details on every quote so the inspection doesn’t catch you off guard. Call (877) 752-4194 and we’ll tell you what your specific project triggers.
Sticking at the bottom usually means the slab has settled or the rough opening has drifted out of square, which is common on Felton’s sloped lots. If the hinges are sound and the slab hasn’t warped, we can typically adjust the reveal and re-set the latch. If the slab itself has taken on moisture and swollen, replacement is often the honest call. Either way, we diagnose before we recommend.
For Felton’s damp, shaded conditions, we usually recommend a Fiber-Classic or Smooth-Star fiberglass slab over wood-stile doors that hold moisture. Fiberglass doesn’t absorb water the way older wood stiles do, and with proper flashing and a moisture-blocking finish, these hold up far better in redwood-shade dampness. The right model depends on your exposure and existing frame. Call (877) 752-4194 for a free estimate and a straight recommendation.
Yes, and this is one of the most common projects we handle in Felton. Sloped lots with deck access require careful flashing at the threshold, drainage detailing at the deck connection, and often a custom sill pan. We set the rough opening properly and install the Therma-Tru patio door system with the right water management details so you’re not fighting leaks every wet season.
Wildfire risk changes the glazing conversation. In Felton’s Chapter 7A zones, we often spec tempered, protected glazing on sidelights and door glass that resists ember exposure and radiant heat. That means choosing glass packages and door configurations that satisfy Felton’s building department while still giving you the light and sightlines you want. It’s a code conversation wrapped in a design conversation, and we handle both.
Service Areas Near Felton
Our Therma-Tru service reaches Felton and the surrounding mountain and coastal communities across the San Lorenzo Valley and beyond. We also provide Therma-Tru service in Hillsborough and Therma-Tru service in Half Moon Bay, along with nearby areas across the Santa Cruz Mountains corridor. If you’re in Felton, ZIP 95018, or just over the ridge, call us and we’ll confirm coverage.
Book Your Therma-Tru Service in Felton Today
A sticky latch, a rotted bottom rail, or a drafty sidelight only gets worse up here. Call (877) 752-4194 to schedule your free estimate, and we’ll give you a straight answer on repair versus replacement for your Felton home. Build it right the first time – the Bay Area doesn’t give you a free pass on shortcuts.
Written by Ken Stafford, Owner at Milpitas Construction, serving Felton’s San Lorenzo Valley homes for over two decades.