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Therma-Tru Construction in Moss Beach, CA | Brookside Contractors
We provide independent Therma-Tru installation and repair across Moss Beach, including Sunshine Valley and the bluffside lots above the Pacific. What makes our Therma-Tru work different here is that we actually know what salt fog, wind-driven moisture, and constant humidity cycling do to fiberglass doors, thresholds, and hardware. Call (833) 725-3508 for a free estimate on Therma-Tru door work, window replacement, roof repair, or a full bathroom remodel in Moss Beach.

Why Moss Beach Residents Choose Us for Therma-Tru Service
Therma-Tru doors are built well, but they were not designed specifically for a fog-belt bluff. The finish, the seals, the hardware, the rough opening framing around them: those are the things that fail first in Moss Beach, and they fail faster on the ocean side than anywhere else in the county. Nate Burrell, our owner and general contractor, grew up around this kind of coastal construction and has spent nearly two decades learning what actually holds up when salt air is involved. We install and service Therma-Tru Fiber-Classic, Smooth-Star, and Classic-Craft doors with the understanding that the door itself is only as good as the flashing, threshold, and hardware selection around it.
We are an independent contractor, not a manufacturer-authorized service provider. That means we are not locked into a script. We tell you honestly when a door slab is worth saving with OEM parts and when the framing has rotted far enough that replacement is the only smart move. Call (833) 725-3508 and we will look at your door, your threshold, and your exposure before we recommend anything.
Styles & brands we work with







Common Therma-Tru Construction Problems We Solve in Moss Beach
- Swelling and delamination at the bottom rail. On beach cottages and ranch homes in Moss Beach and Sunshine Valley, we regularly see Therma-Tru slabs where the factory finish chipped at the bottom edge and the fiberglass skin started wicking fog moisture. The bottom rail gets soft, the door drags, and eventually the skin separates. The fix is either a careful sand-and-seal if caught early, or slab replacement if the core has been wet for years.
- Salt-fog corrosion on hinges, locksets, and sills. West-facing entries on bluffside lots take the full onshore wind with no shielding. Hinges pit, locksets seize, kick plates rust through. We replace with marine-grade or OEM Therma-Tru hardware where the door itself is still sound, which is usually the case.
- Failed sweeps and weatherstripping. Wind-driven fog does not need a storm to get past a worn sweep. Moss Beach doors face constant moisture cycling, and once the sweep fails, water works into the jamb and the rough opening. We see rot in the subfloor at the threshold on older homes where the sweep gave out years before anyone noticed.
- Cloudy glass lites and failed insulated glass units. Therma-Tru door glass sits right at eye level, and on sun-and-fog exposed elevations the thermal cycling takes a toll. Seals fail, the unit clouds, and the only proper repair is an OEM replacement glass insert matched to the door series.
- Rot in the rough opening around the door. This is the expensive one. On underbuilt mid-century framing in Moss Beach, a small flashing mistake or a failed threshold lets moisture into the wall cavity. By the time the door drags or the trim feels soft, the framing often needs to be cut out and rebuilt before a new Therma-Tru slab goes in.
Therma-Tru Service in Moss Beach: What Local Conditions Mean for Your Equipment
On Moss Beach bluffside lots, an ocean-facing entry takes the full onshore wind and salt fog with almost no shielding. The same Therma-Tru door set a few blocks inland in El Granada or Sunshine Valley will corrode at a completely different rate than the one facing west across the water. Hinges pit, sill hardware rusts, and thresholds that look fine from the top are sometimes gone underneath. This is not a brand problem; it is a geography problem. We have had to replace west-facing hardware on doors that were barely five years old, while east-facing doors on the same street still looked new. Do it once, do it right: everything else is just a future repair bill. When we install Therma-Tru doors on exposed elevations in Moss Beach, we spec the hardware and flashing for the actual wind and salt load, not for a generic California suburb. That means marine-grade hinges, a properly sloped and flashed sill pan, and a sweep that actually seals against the pressure of ocean wind.
Therma-Tru Models & Products We Service in Moss Beach
We work on all the common Therma-Tru lines: Fiber-Classic fiberglass entry doors, Smooth-Star smooth-skinned slabs, Classic-Craft series doors, and the door glass and sidelight systems that come with them. When it comes to replacement parts, we order OEM Therma-Tru glass, sweeps, weatherstripping, sills, and hardware whenever the slab and frame are still structurally sound. Aftermarket seals and hinges rarely match the original fit, and a door that does not close clean is a door that leaks. For Moss Beach customers, we keep a working stock of the most common OEM sweeps and weatherstrip profiles so turnaround is faster on a basic repair. Slab replacements and custom glass lites take longer because they are ordered to match the door series and finish.
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AfterTherma-Tru Service Pricing in Moss Beach
Therma-Tru door repair and installation pricing in Moss Beach depends on what you are actually fixing. A simple sweep and weatherstrip replacement costs a lot less than cutting out rotted threshold framing and resetting a door. Here are the ranges for the three services most often bundled with Therma-Tru work on coastal homes:
| Service | Typical Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Roof Repair | $400 – $1,800 |
| Small Bathroom Remodel | $5,000 – $12,000 |
Every estimate we give is free, and it is written out line by line so you see exactly what the materials cost and what the labor costs. Call (833) 725-3508 to schedule yours.
Serving Moss Beach, CA — Our Local Coverage Area
We’re based in the Half Moon Bay 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 Moss Beach
The bottom rail of your door is wicking moisture because the factory finish has chipped or the sweep has failed, and wind-driven fog is working its way into the slab edge. On bluffside lots in Moss Beach this happens faster than inland because the door is constantly wet. Call (833) 725-3508 and we will tell you whether the slab can be saved or needs replacement.
Usually yes. If the slab and frame are sound, we replace the pitted hardware with OEM Therma-Tru or marine-grade hinges, locksets, and sill hardware. The door itself rarely needs to go just because the hardware on a west-facing entry in Moss Beach has rusted.
Yes. A standard sill pan and caulk bead will not hold up to wind-driven fog on an exposed bluffside lot. We build a properly sloped and flashed sill pan, tape the rough opening, and use a threshold detail that sheds water instead of inviting it under the door. This is the difference between a door that lasts 20 years in Moss Beach and one that rots the subfloor in five.
Yes. Cloudy glass on a Therma-Tru door almost always means the insulated glass unit seal has failed and moisture has gotten between the panes. The repair is an OEM replacement glass insert matched to your door series, not a cleaning or a reseal.
Match the profile to the door series and the exposure. On ocean-facing entries, we use the heaviest OEM sweep and weatherstrip available, not a universal aftermarket piece. The wrong sweep lets wind-driven moisture under the door, and on a Moss Beach bluff that turns into rot fast. Call (833) 725-3508 for an exact quote on parts and labor.
Service Areas Near Moss Beach
Beyond Moss Beach, we serve homeowners up and down the coast and inland through Half Moon Bay, El Granada, Montara, Pacifica, and the wider San Mateo County coastside. Our crews also work regularly in our home base around Morgan Hill, San Martin, and Gilroy. If you are looking for Therma-Tru sales & service or want to see the full Moss Beach service area, we cover the whole coastal stretch. For neighbors just north, see Therma-Tru service in Montara and Therma-Tru service in South San Francisco.
Book Your Therma-Tru Service in Moss Beach Today
If your Therma-Tru door is sticking, dragging, or showing rust and rot on the ocean side, do not wait for the framing to go with it. Call (833) 725-3508 and we will schedule a free estimate at your Moss Beach home and get the door closing clean again.
Written by Nate Burrell, Owner at Brookside Contractors, serving Pacifica, Moss Beach and the San Mateo County coast.