New windows and doors improve comfort, cut energy bills and add long-term value to your home. Westlight Windows San Diego pairs proven product lines with our own installing crews for lasting performance - and a price we put in writing.
Choose your installer
The unit is half the job - the install is the other half. Our own background-checked crews measure, set, seal and insulate every opening, and they know the lines we quote inside and out because they install them every week.
Select the right products
Compare styles, materials and glass packages side by side until the fit is right for your rooms, your budget and your goals. The product-line comparison below is the place to start.
Prepare your home for install
Before install day we walk you through a short checklist - furniture pulled back, treatments down, a clear path to each opening - so install day is watch-it-happen, not scramble.
Compare the Lines We Quote
Every project is priced on the same lines, side by side - the price indicators below are relative, and your consultant shows exact numbers on your actual openings.
PGTThe line Florida homeowners arrive naming - the most Miami-Dade certifications in the industry$$$
- More Miami-Dade NOA certifications than any other line we quote
- WinGuard, EnergyVue and ClassicVue Max systems built for every wind zone
- 99% on-time delivery keeps your install date on the calendar
CGIThe heavyweight impact line$$$$$
- Large-missile impact ratings for the strictest wind zones
- Architectural-grade aluminum with commercial-depth frames
- The line we quote when protection is the whole point
CWSThe Florida value pick$$
- Vinyl systems built in Florida for Florida codes
- Strong energy packages at the friendliest price point
- The smart start for whole-home replacements on a budget
ESWSlim lines, big glass$$$$
- Narrow-sightline aluminum for modern elevations
- Oversized openings and floor-to-ceiling glass
- Impact-rated without the bunker look
ECOThe aluminum impact workhorse$$$
- Miami-built aluminum impact systems
- A strong price-to-protection ratio for coastal homes
- Proven inventory lines with short lead times
Therma-Tru Door Installation: The San Diego Owner’s Guide
If you have a Therma-Tru door that is binding, sagging, leaking air, or refusing to latch, the fix usually comes down to the slab, the hinges, the weatherstripping, or the frame itself. In San Diego, a professional Therma-Tru door installation typically runs $850 to $2,400 installed, depending on whether we are rehanging an existing slab or setting a brand-new prehung unit. Most single-door swaps take four to six hours on site. The most common call we get starts with a homeowner noticing the door sticks at the top corner or daylight showing through the weatherstrip.
Which Therma-Tru Models This Applies To
Westlight Windows San Diego installs and services every Therma-Tru entry door line you are likely to have in a San Diego home: the Classic-Craft (fiberglass with deep wood-grain texture), Fiber-Classic (smooth or oak-grain fiberglass), Smooth-Star (the budget-friendly fiberglass line), and Pulse (the newer smooth modern series). The compatibility gotcha most homeowners miss is that Therma-Tru slab thickness, hinge prep, and sill profile are not universal across series. A Classic-Craft slab will not drop cleanly onto a Smooth-Star frame, and the adjustable sill on a Pulse unit uses a different track than older models. The quickest way to identify your door is to look for the Therma-Tru label on the hinge edge of the slab, or check the paperwork if the home was built after 2005. If there is no label, send us a photo of the hinge and sill. We can match it. We are an independent installer, not affiliated with Therma-Tru, so when you call us you are talking directly to the crew who will show up, and we will tell you plainly whether OEM Therma-Tru replacement parts are worth the premium or whether a quality aftermarket sill or weatherstrip gets you the same lifespan for less money.
Signs Your Therma-Tru Door Installation Is Failing
We walk through these five symptoms with San Diego homeowners every week. Each one points to a specific failure, and knowing which one helps you decide whether this is a repair or a replacement.
- Door drags or sticks at the top strike-side corner. This usually means the door slab has settled or the hinges have worn enough to let the slab tilt. In older San Diego bungalows, it is often the hinge screws backing out of a jamb that was never shimmed properly.
- Daylight visible through the weatherstrip at the sides or top. The weatherstrip is compressed, or the slab is out of square. If you see light in one corner and not the other, the frame moved; if the light is even down the whole edge, the weatherstrip is shot.
- Latch bolt misses the strike plate or needs a hard pull to engage. The reveal (the gap between slab and jamb) has changed. This is the number one reason homeowners think they need a new lockset when they actually need the door rehung.
- Door swings open or closed on its own. The jamb is out of plumb, or the frame was never shimmed correctly when the original San Diego builder put it in. This one weakens the hinge screws over time and will not fix itself.
- Water stains or rot at the bottom corners of the jamb or threshold. The sill cap or corner pads failed. In San Diego’s dry climate, homeowners forget that the rare heavy rain we do get exposes a bad seal fast, especially on west-facing doors in Point Loma or Mission Hills that catch wind-driven rain.
Replacement Cost & What’s Included
In San Diego, you should expect to pay $180 to $420 for a Therma-Tru-compatible sill replacement, $250 to $550 to rehang an existing slab with new hinges and shims, and $850 to $2,400 for a full new prehung Therma-Tru door installation, depending on size, glass, and whether the old frame needs tear-out. The price difference between $850 and $2,400 is mostly three things: the door width and height, whether you want decorative glass, and how much framing damage we find once the old jamb comes off. We give you a written price before any work starts on every door installation in San Diego. That written quote includes the door, hinges, threshold, weatherstripping, shimming, leveling, interior and exterior trim re-installation, and haul-away of the old unit. Our workmanship is backed by the 365-Day Done Right Promise: if the door shifts, sticks, or fails within the guarantee period, we come back and fix it at no charge. Call (619) 793-3829 and we will give you a line-item quote you can hold us to.
DIY or Call Us?
Most Therma-Tru door work is not dangerous like a garage spring or a gas line, so there are a few things you can safely check yourself. Look at the hinge screws: if they spin without catching, removing one screw and replacing it with a 3-inch screw that bites into the rough framing behind the jamb will often buy you time. You can also inspect the weatherstrip: if it is brittle or permanently compressed, replacing the strip is a ten-minute fix you can do with a utility knife. What you should not do is try to plane or sand the slab of a fiberglass Therma-Tru door to stop it from sticking. Fiberglass door skins are thin, and once you cut through the surface layer, you have ruined the door in a way that cannot be patched. The same goes for shimming a frame if you do not know what you are working off of. If the door is binding in a way that requires hinge adjustments, re-shimming, or resetting the sill, let us handle it. One wrong shim makes the problem worse, and then you are paying us to undo it. Call (619) 793-3829, describe what the door is doing, and we will tell you over the phone whether it sounds like a DIY check or a service call.
FAQs
A properly installed Therma-Tru entry door in San Diego’s climate will easily last 20 to 30 years, with the weatherstripping needing replacement every 3 to 5 years depending on sun exposure. Fiberglass slabs do not warp or rot the way wood does, which makes them a good match for coastal humidity. What typically fails first in our area is the sill and the weatherstrip, not the slab itself. If your door is less than 10 years old and failing, installation is usually the culprit, not the product. Call (619) 793-3829 and we will diagnose it over the phone before you spend anything.
Yes, in most cases a binding or sagging Therma-Tru door can be repaired by rehanging the slab, replacing hinges with proper ball-bearing hinges, re-shimming the jamb, or replacing the sill. The slab itself rarely needs replacing unless it has been cut, cracked, or the surface has been compromised. Repair costs run in the $250 to $550 range, which is money well spent compared to $850 and up for a new door. Call (619) 793-3829 for an exact quote. Estimates are free, and we put the price in writing before any work starts.
Most single-door Therma-Tru installations in San Diego are a four to six hour job when the rough opening is in good shape. If the old frame was not flashed correctly and there is hidden water damage behind the trim, plan for a full day, because we will not button the trim back up over rotted framing. We will tell you upfront if your job looks like the longer version. Call (619) 793-3829 and we will give you a written arrival window and a written price.
We do not keep a full Therma-Tru parts inventory in the truck, but we carry common thresholds, corner pads, weatherstripping, ball-bearing hinges, and shim stock on board, and we can source OEM Therma-Tru sills and slabs within a few days through our local suppliers in San Diego. If it is a common part, we often have it or can get it same-week. If it is a special-order glass insert or an unusual sill profile, we will quote you a lead time before you spend anything. We also stock parts for PGT, CGI, and CWS door systems, since those three brands share some hardware profiles with Therma-Tru units we install. Call (619) 793-3829 with your door model and a photo of the part, and we will get you a firm answer.
Written by Owen Satterfield, Owner, Westlight Windows San Diego at Westlight Windows San Diego, serving San Diego and nearby areas.
Six Reasons Homeowners Choose Westlight Windows San Diego
Laminated glass and reinforced frames hold up to wind-driven rain, hail and flying debris, so your openings stay sealed when the weather turns.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Tighter seals and insulated glass even out hot and cold rooms and stop the drafts at the frame.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.