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Therma-Tru Construction in Half Moon Bay, CA | Brookside Contractors
Brookside Contractors provides independent Therma-Tru door installation, repair, and retrofit service throughout Half Moon Bay and nearby communities like El Granada Therma-Tru service. We are not a manufacturer-authorized dealer, and that independence lets us specify exactly what a coastal home needs rather than pushing a factory default. The one thing that sets our Therma-Tru work apart here: we treat every entry door as a marine-environment problem first, because Half Moon Bay’s salt fog and morning damp will expose a wrong finish or fastener within two seasons. Call (833) 725-3508 for a free estimate on any Therma-Tru door project.

Why Half Moon Bay Residents Choose Us for Therma-Tru Service
We have pulled apart, rebuilt, and reinstalled Therma-Tru doors on coastal homes long enough to know which models survive here and which ones get replaced twice. Smooth-Star fiberglass slabs, Classic-Craft American Style entry systems, Fiber-Classic door slabs, and the Pulse and Traditions patio door series all have different behaviors in a fog-belt environment. We match the slab to the exposure, not the other way around.
Nate Burrell grew up around construction in South Santa Clara County and trained in construction technology at Gavilan College before spending nearly two decades on residential job sites. That background matters when a Half Moon Bay homeowner has a door that swells every damp morning and a sill that has been quietly rotting behind the threshold. We do not guess at the cause. We pull the door, inspect the rough opening, and tell you honestly whether the slab, the flashing, or the original install is the problem. Our Therma-Tru sales & service work covers everything from full entry system replacements to targeted weatherstripping and threshold repairs.
We also carry OEM Therma-Tru weatherstripping, sills, and sweeps for common slab sizes, which means many Therma-Tru in Moss Beach and Half Moon Bay repairs do not wait on a parts order. When a door is beyond saving, we say so plainly. Do it once, do it right, everything else is just a future repair bill.
Styles & brands we work with







Common Therma-Tru Construction Problems We Solve in Half Moon Bay
- Salt-fog corrosion on hinges, locksets, and factory finishes. Doors facing the Pacific windward side take a beating here. Standard factory hardware begins pitting and seizing within a few years. We replace worn components with marine-grade stainless and refinish slabs with coatings rated for coastal exposure.
- Water infiltration at the sill and threshold. Many mid-century Half Moon Bay homes still have original wood-framed door openings with no pan flashing under the threshold. Fog-belt moisture wicks into the subfloor and rots the frame from underneath. We reset the opening and flash it properly before the new door goes in.
- Fiberglass skin delamination and edge swelling. When jambs and wood cores were never sealed for high humidity, persistent damp finds its way into the slab edge. The fiberglass skin separates, the edge swells, and the door stops seating correctly. If the core is compromised, patching is a waste of your money.
- Warping and sticking Fiber-Classic slabs. Half Moon Bay cycles between wet mornings and warm afternoons. That thermal and humidity swing makes a marginally installed Fiber-Classic slab bow and bind against the frame. Failed weatherstripping on older installs makes it worse.
- Leaking Therma-Tru patio doors. Pulse and Traditions patio door systems with worn rollers or compressed seals let driven rain into the track channel. Fog-belt condensation adds to the problem. We rebuild the track, replace the seal system, and correct the flashing at the deck connection.
Therma-Tru Service in Half Moon Bay: What Local Conditions Mean for Your Equipment
Half Moon Bay sits in the coastal fog belt where morning damp lingers on exterior surfaces until the sun burns through, sometimes not until past noon in the Moonridge area. That means a Therma-Tru door here is wet for hours every day, even in summer. Standard galvanized fasteners, builder-grade hinges, and factory-applied finishes that hold up in a sunny inland tract home will gray, corrode, and eventually fail within a few seasons of salt fog. We see it constantly: a door that would still look brand-new in Burlingame is pitted and sticking two years after installation here. The fix is not a better paint job. It is marine-rated finishes, stainless hardware, and a properly flashed sill with a sealed rough opening. The same installation that lasts twenty years inland will leak inside five on a windward-facing Half Moon Bay entry.
Local builders who work this coast regularly know that the Coastal Commission and floodplain requirements add permitting layers that inland towns never see. Delays are common if the paperwork is incomplete or the door replacement triggers a review because of the property’s zone designation. We handle the permit path for our clients and coordinate with local inspectors so a new entry door or patio system does not stall in review.
Therma-Tru Models & Products We Service in Half Moon Bay
Our crew works on the full residential Therma-Tru line: Smooth-Star fiberglass entry doors, Classic-Craft American Style collection panels, Fiber-Classic door slabs, and Pulse and Traditions patio door systems. We source genuine Therma-Tru OEM weatherstripping, sweeps, sills, and hardware for fit-critical components. For coastal durability, we specify quality aftermarket marine-grade stainless fasteners, hinges, and finishing products rather than the standard factory hardware.
What we stock locally depends on what Half Moon Bay homes actually need. Common Smooth-Star and Fiber-Classic slab sizes, OEM weatherstripping profiles for the most-installed entry systems, and marine-grade stainless hingesets are kept on hand for faster turnaround. When a replacement slab or specialty panel has to be ordered, we tell you the lead time before you commit, not after.
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AfterTherma-Tru Service Pricing in Half Moon Bay
Therma-Tru work in Half Moon Bay typically falls into three cost bands depending on whether you are repairing, replacing, or adding on. Repairs like weatherstripping, threshold replacement, and hardware swaps usually run a few hundred dollars. Full door system replacements land between $4,500 and $15,000 depending on slab choice and opening condition. Impact-rated window and door packages for the windward side of the house run $8,000 to $25,000.
| Service | Price Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
| Home Addition | $45,000 – $130,000 |
What drives the final number on a Therma-Tru project in Half Moon Bay is the condition of the rough opening once we pull the old slab. If the framing is sound and the flashing is intact, the job is straightforward. If we find rotted sills or water-damaged framing, repair costs get added before the new door can be set. Our free estimate covers all of it: we inspect the opening, check the exposure, and give you a written line-item quote before any work starts. Call (833) 725-3508 to schedule yours.
Serving Half Moon Bay, CA — Our Local Coverage Area
We’re based in the Half Moon Bay area and know this community well, including Montara Therma-Tru service. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Therma-Tru Construction in Half Moon Bay
A standard Therma-Tru fiberglass door will hold up in Half Moon Bay only if the hardware, fasteners, sill flashing, and finish are specified for marine exposure. The slab itself is fiberglass and resists rot, but the hinges, lockset, threshold, and jamb sealing around it are the weak points. Factory hardware corrodes quickly in salt fog, and a sill without proper pan flashing lets moisture into the subfloor. Upgrade to stainless hardware, marine-rated finish, and a flashed opening, and the door will last. Skip those and you will be replacing hardware within a few years. Call (833) 725-3508 and we will spec it correctly the first time.
Sticking and swelling on a Therma-Tru door in Half Moon Bay is usually a combination of install problems and moisture intrusion at the slab edge rather than a defective fiberglass panel. When the rough opening was not sealed and flashed properly, fog-belt humidity migrates into the jamb and the slab edge, causing the door to bind. The fix depends on what we find when we pull the slab. If the core and skin are intact, re-flashing the opening, replacing weatherstripping, and resealing the edges solves it. If the core has absorbed moisture and the skin is delaminating, replacement is the honest recommendation. Call (833) 725-3508 to have us take a look.
Yes, most entry door and window replacements in Half Moon Bay require a permit, and doors on properties within floodplain or coastal review zones can involve additional scrutiny. The city’s building department wants to verify that the new opening meets current energy, wind, and moisture codes. We pull the permits, coordinate the inspections, and make sure the finished work passes. It is part of the job, not an add-on.
Smooth-Star is a smooth-skinned fiberglass entry door with clean, contemporary lines and fewer surface details. Classic-Craft American Style panels have deeper wood-grain texture and a more traditional profile. For a coastal Half Moon Bay home, the difference matters less than the hardware and finishing spec. Both slabs resist rot, but both need marine-rated hinges, stainless fasteners, and a flashed sill. If your home faces the Pacific windward side, we recommend the smoother surface of Smooth-Star for easier cleaning of salt residue, but the panel choice is yours.
Most leaking Therma-Tru Pulse and Traditions patio doors in Half Moon Bay can be repaired without replacing the entire unit. The usual culprits are compressed or torn weatherstripping, worn rollers, a clogged track channel, or failed flashing where the door meets the deck or patio. We rebuild the seal system, replace the rollers, and correct the flashing. Full replacement only makes sense when the frame itself has rotted or the glass unit has failed. Call (833) 725-3508 for an exact assessment, estimates are free.
Service Areas Near Half Moon Bay
We serve Half Moon Bay and the surrounding coastal and inland communities. Our Therma-Tru crew regularly works in Half Moon Bay service area neighborhoods and handles door projects across the broader region. We also provide Therma-Tru service in Burlingame and Therma-Tru service in Hillsborough for clients along the Peninsula.
Book Your Therma-Tru Service in Half Moon Bay Today
If your Therma-Tru door is sticking, leaking, or showing rust on the hinges, let us look at it before the damage spreads into the framing. Call (833) 725-3508 to schedule a free estimate with Nate Burrell and the Brookside Contractors crew. We will inspect the opening, give you a straight answer, and quote the job in writing.
Written by Nate Burrell, Owner at Brookside Contractors, serving Half Moon Bay and the surrounding coast as our General Contractor in Half Moon Bay.