Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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Before
AfterTherma-Tru Construction in Los Altos, CA | Rowan Construction Group Mountain View
We provide independent Therma-Tru service across Los Altos, not as an authorized dealer but as a construction contractor that has installed and repaired hundreds of these fiberglass entry systems on local homes since 2007. The one thing that makes our Therma-Tru work here different: we’ve learned how Los Altos’s Heritage Tree Ordinance and adobe clay foundation conditions create door problems that don’t show up in the factory manual, and we stock the OEM parts to fix them without the month-long wait. Call (669) 215-4852 to schedule your free estimate.
Why Los Altos Residents Choose Us for Therma-Tru Service
Grant Rowan grew up in Beverly Hills, learned the trade at Los Angeles Trade-Technical College on framing, concrete, and finish work, and has been building in this valley for over two decades. His crew has worked steadily across Mountain View and into Los Altos - including projects near the Country Club area and along the Foothill Expressway corridor - long enough to know that a Therma-Tru door installed to spec in Palo Alto can fail six months later in Los Altos if the sill pan doesn’t account for how adobe clay holds moisture against the threshold.
We source OEM Therma-Tru replacement sills, hinge shims, and multi-point gearboxes for doors under 15 years old where the slab face and stiles are still sound. For rot that has reached the bottom rail or stile, we recommend full replacement with a new Therma-Tru system rather than patching, because the composite core cannot be structurally repaired once compromised. Under Clause 1 of the Haven Standard, the written price comes before any work starts - every time, on every door job. We don’t do “call for a quote.”
Our technicians are background-checked and uniformed. A live person answers calls 24/7. Every visit includes a documented photo record as standard - not an upgrade. And our Therma-Tru sales & service extends across the full product line, from Fiber-Classic to Classic-Craft Canvas.
Common Therma-Tru Construction Problems We Solve in Los Altos
- Bottom rail rot on Fiber-Classic doors. Winter rain splashes off the slab and wicks into the composite bottom rail, invisible until the door sags and drags on the threshold. In Los Altos, this accelerates on homes where the original 1950s slab sits close to grade with no drainage plane - common on the ranch stock north of El Camino Real.
- Multi-point lock misalignment on Smooth-Star doors. Adobe clay foundation movement shifts the strike jamb 1/8-inch out of plumb after the first wet season, making the door impossible to latch without slamming. We’ve re-aligned dozens of these on rebuilt Los Altos homes where the post-tension slab settled differently than the geotech report predicted.
- Hinge-side jamb swelling and paint failure. 1990s-era Therma-Tru entries with non-sealed jamb extensions in unconditioned garages or covered porches - typical of the second-story additions that went up in Los Altos Hills during the dot-com boom - trap moisture and swell the jamb until the door binds.
- Fiberglass skin delamination from the stile. South-facing entry doors after 15+ years of UV exposure develop a hollow sound when tapped, with eventual water intrusion at the glass insert. Los Altos’s clear-sky winter days and intense summer sun beat harder than coastal fog zones; we’ve replaced more delaminated slabs here than in Mountain View or Sunnyvale combined.
- Re-order delays from Heritage Tree Ordinance revisions. The city-approved arborist report can shift a foundation footprint 4 feet north after the door is already spec’d, forcing a re-template with different handing or sidelite configuration. This isn’t a product failure, but it’s the Therma-Tru problem we solve most often in Los Altos teardown-rebuilds.
Before
AfterTherma-Tru Service in Los Altos: What Local Conditions Mean for Your Equipment
Los Altos’s Heritage Tree Ordinance routinely forces foundation footprints to shift around protected valley oak root zones, which changes door rough-opening locations and swing clearances mid-construction. Therma-Tru entries spec’d before the arborist report often need re-ordering with different handing or sidelite configurations once the final foundation plan is approved. On a teardown-rebuild in the Country Club neighborhood near the Los Altos Golf & Country Club, we installed a Therma-Tru Classic-Craft Canvas entry with sidelites on a new post-tension foundation. The original architectural drawings placed the front door rough opening within 6 feet of a protected valley oak, but the city-approved arborist required a 10-foot root-zone exclusion that pushed the entire entry 4 feet north. We re-templated the Therma-Tru frame, re-ordered the door with a left-hand inswing and shorter sidelite, and set the new unit on a sealed composite sill pan to keep winter rain from wicking into the adobe clay at the threshold. That’s the difference between a door installer and a contractor who has rebuilt enough Los Altos homes to know the permitting sequence by heart. Measure twice, write it down, then build it that way.
Therma-Tru Models & Products We Service in Los Altos
We work across the full Therma-Tru residential line:
- Fiber-Classic Collection - fiberglass entry doors with woodgrain texture, the line we see most often on Los Altos ranch remodels where the homeowner wants stained wood appearance without the maintenance.
- Smooth-Star Collection - smooth fiberglass doors for paint-grade finishes, popular on the newer teardown-rebuilds where the architect spec’d a bold color match to the steel window frames.
- Classic-Craft Canvas Collection - premium fiberglass entry systems with crisper molding profiles; we installed one on the Country Club rebuild mentioned above, and stock the wider hinge shims and upgraded multi-point hardware these units require.
- Therma-Tru Benchmark Series - fiberglass entry doors with multi-point locking, common on 2000s-era Los Altos homes where the builder upgraded from single-bore deadbolt prep.
We carry OEM Therma-Tru sills, composite bottom rails, multi-point gearboxes, and hinge shims in our Mountain View warehouse for same-week turnaround on most Los Altos service calls. Aftermarket hardware fits, but we’ve seen the strike plates wear loose and the gearboxes strip faster - the OEM parts cost more upfront and save the second service call.
Therma-Tru Service Pricing in Los Altos
| Service | Price Range |
|---|---|
| Therma-Tru entry door replacement (fiberglass, single, installed) | $4,500-$15,000 |
| Therma-Tru multi-point lock gearbox replacement | $400-$1,800 |
| Therma-Tru door bottom rail repair or replacement | $800-$2,500 |
What drives the cost: the door slab style and glass insert selection; whether the frame and jamb can be reused; and whether the Los Altos permit requires a site inspection for the replacement (it usually does on teardown-rebuilds, rarely on like-for-like slab swaps). Our free estimate includes a written scope, line-item pricing, and a photo record of existing conditions - no charge, no obligation. Under the Haven Standard, the price you agree to is the price you pay; no change proceeds without a signed change order. Call (669) 215-4852 to schedule yours.
We also provide related interior finish work that often accompanies entry door replacement on Los Altos whole-home renovations, including Los Altos Kitchen Remodeling: Cabinet Installation ($4,000-$13,000), Countertop Installation ($2,000-$6,500), and Bathroom Vanity Installation ($800-$3,000). These are quoted with the same flat written price and documented photo record as our door work.
Serving Los Altos, CA - Our Local Coverage Area
We’re based in the Los Altos area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Therma-Tru Construction in Los Altos
Can you replace just the Therma-Tru door slab without replacing the entire frame on a Los Altos ranch home?
Yes, if the existing frame is plumb, square, and free of rot. On 1950s-1970s Los Altos ranch homes, we often find the original wood frame has absorbed moisture from the slab edge and swollen; in those cases, a slab-only replacement will bind within a season. We check with a level and moisture meter before quoting. Call (669) 215-4852 for an exact assessment - estimates are free.
Why does my Therma-Tru Smooth-Star door stick only during winter rains in Los Altos?
The adobe clay soil under your foundation swells when saturated, shifting the strike jamb microscopically out of plumb. The multi-point lock system has tight tolerances - 1/8 inch is enough to bind the deadbolt and latch. We shim the hinge side and adjust the strike plate in the dry season, then return to fine-tune after the first winter if needed. Call (669) 215-4852 and we’ll check it now before the rains start.
Does the Heritage Tree Ordinance affect how you install a Therma-Tru entry door on a Los Altos rebuild?
It can change the door entirely. The arborist’s root-zone exclusion may shift the foundation footprint, which changes the rough opening size, the swing direction, and whether sidelites will fit. We don’t order the Therma-Tru unit until the city approves the final foundation plan - one of the sequencing lessons we’ve learned on Los Altos teardowns. Call (669) 215-4852 to discuss your project’s permit status.
What Therma-Tru entry door line holds up best against Los Altos sun and winter rain?
The Classic-Craft Canvas Collection carries the thickest fiberglass skin and the best UV-stable gelcoat, which matters on south-facing entries in Los Altos’s intense sun. For the threshold, we always specify a composite sill pan with end dams - the factory standard works in Cleveland, but Los Altos’s winter rain sitting on adobe clay needs the extra drainage protection. Call (669) 215-4852 to compare lines for your exposure.
How do you decide between repairing and replacing a 20-year-old Therma-Tru door in Los Altos?
We tap-test the stiles and bottom rail with a hammer. Hollow sound or soft spots mean the composite core is compromised, and patching will fail within two years. If the slab face and stiles are solid, we replace the sill, hardware, and weatherstrip with OEM parts and warranty the work for 365 days under our Done Right Promise. Call (669) 215-4852 for a free evaluation - we’ll show you the photos and explain what we found.
Service Areas Near Los Altos
We serve Los Altos service area homeowners directly, and regularly cross into neighboring communities on larger projects. Our crews are active in Therma-Tru service in Mountain View - where we’ve worked near Castro Street and the downtown blocks - and Therma-Tru service in Sunnyvale, plus Palo Alto, Los Altos Hills, and the Stanford vicinity. The soil conditions and housing stock differ block by block, and we adjust the sill pan spec and drainage detail accordingly.
Book Your Therma-Tru Service in Los Altos Today
Call (669) 215-4852 to schedule your free estimate. A live person answers 24/7. We’ll deliver a written price with line-item scope before any work starts, back it with our 365-Day Done Right Promise, and leave you with a documented photo record of what we found and what we did. No change order gets signed until you approve it in writing.
Written by Grant Rowan, Owner at Rowan Construction Group Mountain View, serving Los Altos since 2007.