Kitchen remodeling
Bathroom remodeling
Home additions & ADU
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Therma-Tru Construction in Rancho Cucamonga, CA | Daly City Construction
We install, repair, and replace Therma-Tru entry door systems across Rancho Cucamonga as an independent contractor who works with these doors every week, in every season. The one thing that makes our Therma-Tru work different here: we treat the entry door as an exterior code assembly, not a finish swap, because Rancho Cucamonga hillside permits require seismic anchoring and Chapter 7A ember-resistant detailing. Call (866) 505-5254 for a free estimate on Therma-Tru slab replacement, full system install, or sill and frame repair.

Why Rancho Cucamonga Residents Choose Us for Therma-Tru Service
We fit Therma-Tru entry systems across the Inland Empire year-round, so we know how Fiber-Classic and Smooth-Star slabs actually hold up under foothill heat, Santa Ana wind loading, and the seasonal thermal cycling that hits 91737 and 91739 hardest. That’s a different knowledge base than a showroom full of sample doors. We buy, fit, and repair Therma-Tru product on its own merits — including Ontario Therma-Tru service — and never claim factory authorization or warranty endorsement.
Noel Cabrera, our owner, grew up watching his uncle re-frame a garage in Daly City and learned early that a door is only as good as the rough opening behind it. That’s how we approach every Therma-Tru job in Rancho Cucamonga and Therma-Tru in Upland: check the frame, the sill bedding, the hinge shims, and the weatherstrip before recommending slab-only replacement or a full system swap. We’re an independent Therma-Tru service provider, not a manufacturer affiliate.
Styles & brands we work with







Common Therma-Tru Construction Problems We Solve in Rancho Cucamonga
- Chalked and faded factory finishes. Years of Inland Empire UV bake the factory paint on Fiber-Classic and Smooth-Star slabs, especially on south- and west-facing doors. The wood-grain staining on Classic-Craft skins also fades unevenly. We strip, prep, and refinish with UV-stable topcoats that don’t chalk out after two summers.
- Wind-driven water past the Tru-Defense sill. Sills that were never bedded or back-caulked correctly let rain past the frame during winter storm fronts, rotting the rough-opening jamb and staining interior flooring. We catch this early on doors throughout the 91730 grid.
- Hinge-side sag from Santa Ana gusts. Seasonal winds funneling through the Cajon Pass torque slab-hung doors hard. Frames shimmed loosely by the original builder end up with rubbing slabs, failed hinges, and weatherstrip that no longer seals. We re-shim, anchor, and realign.
- Open caulk joints at frame and sidelite seams. Heat cycling plus foothill seismic movement cracks the frame-to-stucco seal. This is a real problem in Alta Loma and Deer Creek, where ember-laden wind can reach gaps that should be sealed under WUI construction rules.
- Rotted rough openings from repeated leak cycles. By the time a Rancho Cucamonga homeowner notices the interior damage, the hinge-side jamb has usually been wet for years. We replace the jamb properly rather than smearing caulk over rot.
Therma-Tru Service in Rancho Cucamonga: What Local Conditions Mean for Your Equipment
Rancho Cucamonga pulls permits through its own city building division, and hillside remodels in the 91737 foothill zone must satisfy both seismic detailing and Cal Fire very-high fire severity (Chapter 7A) requirements. That means a Therma-Tru entry door gets evaluated as an exterior assembly, with ember-resistant sealing and anchored frames, not just as a cosmetic swap. Owners in the Alta Loma and Deer Creek foothills, and those seeking Therma-Tru repair in Fontana, learn this the hard way when their remodel plan hits the building counter. Our crew has walked through this enough times to know what the inspector will flag before the inspection happens. We pre-detail the frame anchors, the sill pan, and the gap seals so the door passes on the first visit.
Therma-Tru Models & Products We Service in Rancho Cucamonga
We install and repair Therma-Tru Fiber-Classic and Smooth-Star door slabs, Classic-Craft American Style collection entry systems, and Benchmark factory-finished door packages. When a slab has Simulated Divided Lite glass or a Tru-Defense sill, that’s still standard work for us. We fit genuine Therma-Tru replacement slabs, Tru-Defense sills, hinges, and weatherstrip kits where the frame is sound, because mismatched aftermarket sills are the usual source of repeat leaks in this climate. Where the frame or rough opening is compromised, we price a full system replacement rather than patch a door that will fail again. Our Therma-Tru sales & service experience covers the full model range.
See the difference
Before
After
Before
After
Before
AfterTherma-Tru Service Pricing in Rancho Cucamonga
Therma-Tru work is usually part of a larger project, so here’s how the numbers land in this market:
| Project | Price Range |
|---|---|
| Full Kitchen Remodeling | $14,000 – $45,000 |
| Full Bathroom Remodeling | $9,000 – $28,000 |
| Roof Replacement & Installation | $8,000 – $20,000 |
| Home Addition | $45,000 – $130,000 |
Entry-door work runs under these remodel scopes most of the time. What drives the cost: whether we can reuse the frame and rough opening, whether the home is in a Chapter 7A zone with extra sealing requirements, and whether sidelites or SDL glass are involved. Call (866) 505-5254 and we’ll give you a written line-item quote.

Serving Rancho Cucamonga, CA — Our Local Coverage Area
We’re based in the Rancho Cucamonga area and know this community well, including Therma-Tru in San Antonio Heights. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Therma-Tru Construction in Rancho Cucamonga
Yes, if the home sits in a Cal Fire very-high fire severity zone, the door is treated as part of the exterior assembly and must meet Chapter 7A requirements for ember-resistant sealing and anchored frames. We pre-detail anchors and seals so the Rancho Cucamonga building inspector passes the work the first time. Call (866) 505-5254 for an exact scope.
The Inland Empire UV bake breaks down the factory or field-applied paint on Fiber-Classic slabs, especially on south- and west-facing exposures throughout Rancho Cucamonga. We strip and refinish with UV-stable topcoats that hold up under the 91737 sun. Call (866) 505-5254 to schedule an assessment.
Usually not. Wind-racked frames and loose shims are the real culprit when Cajon Pass gusts torque the slab out of alignment. We re-shim, anchor, and realign the existing door rather than sell you a new one you don’t need. Call (866) 505-5254 for a free inspection.
Yes, if the frame and rough opening are sound. We fit genuine Therma-Tru replacement slabs and Tru-Defense sills that match the existing assembly, so you keep the sidelites and surrounding trim. Call (866) 505-5254 and we’ll tell you honestly whether this is the right call for your door.
Yes. Entry doors are a common add-on or replacement item when we’re already on site for a kitchen or bathroom remodel in the 91730 and 91701 grids. We coordinate the door work with the larger project so you’re not juggling another contractor. Call (866) 505-5254 to include it in your remodel scope.
Service Areas Near Rancho Cucamonga
We serve the greater Rancho Cucamonga area, including the 91737, 91739, 91701, and 91729 ZIP codes, plus nearby foothill and valley communities. If you’re in Alta Loma, Deer Creek, or the central grid, we’re close by. We also cover Rancho Cucamonga service area neighbors, and for reference, our crew works Therma-Tru systems in Therma-Tru service in Placentia and Therma-Tru service in Anaheim as well.
Book Your Therma-Tru Service in Rancho Cucamonga Today
Tell me what the house needs, not what you think it needs – then we’ll figure out the right fix. Call (866) 505-5254 for a free estimate on any Therma-Tru entry system in Rancho Cucamonga.
Written by Noel Cabrera, Owner at Daly City Construction, serving Rancho Cucamonga and the Inland Empire.