New windows and doors improve comfort, cut energy bills and add long-term value to your home. Juniper Windows Long Beach 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 Replacement in Long Beach: What to Know First
Therma-Tru door replacement in Long Beach typically runs between $1,800 and $4,200 for a full entry system, and most jobs are completed in one day once the door arrives from the manufacturer or our supplier. We’re an independent Therma-Tru service provider, not a factory-authorized dealer, which means we quote you a real number based on the actual door you need, not a brand premium. If you own a Therma-Tru fiberglass door that’s warped, cracked, or no longer seals, this page covers what actually fails on these doors, what replacement costs in Long Beach, and how we handle the job. Call (562) 317-8865 for a free estimate and a written price before anything starts.

How Therma-Tru Products Fail – and How We Fix Them
We’ve replaced enough Therma-Tru doors across Long Beach to know exactly where they break down. Here are the failure patterns we see most, by product line, and what we do about them:
- Classic-Craft and Fiber-Classic frame rot at the bottom corners. These fiberglass slabs are tough, but the frame is usually composite or wood. In Long Beach’s marine air, water wicks up from the threshold at the bottom corners and sits there. We see the left corner go soft first on west-facing entries. Fix: full frame replacement with a rot-resistant jamb, not a patch. A patch buys you two years; a new frame buys you twenty.
- Smooth-Star slab delamination near the lock bore. If a Smooth-Star door was ever drilled for a deadbolt with a dull bit, the fiberglass skin lifts. Salt air makes it worse because the exposed substrate absorbs moisture and swells. The skin starts peeling within five years. Fix: slab replacement. We re-bore with a hole saw designed for fiberglass and seal the bore edges before the hardware goes in.
- Pulse and Benchmark (builder-grade) threshold failure. The adjustable aluminum thresholds on builder-grade Therma-Tru doors corrode fast in coastal conditions. The screws seize, the vinyl cap cracks, and the door stops sealing. Fix: we replace the threshold with a one-piece mill finish or PVC version that won’t corrode, then re-hang the door to the new height. Most homeowners don’t need a whole new door for this, but if the slab is also faded or cracked, replacement makes more sense.
- Glass insert seal failure on Classic-Craft doors with decorative lites. The internal seal between the glass and the fiberglass frame breaks down, and you get condensation between the panes that never clears. Therma-Tru’s warranty covers some glass lites, but if the glass is older or the door was installed by someone who didn’t flash the top properly, you’re often buying a new insert or a new slab. Fix: we replace the glass insert with an energy-efficient low-E unit, or the full slab if the frame around the glass has cracked.
- Warped slabs on dark-painted doors with direct afternoon sun. Fiberglass doors can warp when a dark finish absorbs heat on a south-facing or west-facing Long Beach exposure. We’ve pulled Smooth-Star slabs with a half-inch bow. That door will never seal again. Fix: replacement with a lighter finish or a door rated for high heat gain, then we check the reveal on all three sides before we call it done.
Our Therma-Tru Door Replacement Process
Here’s how a Therma-Tru replacement works when you call Juniper Windows Long Beach:
- 1
Call and schedule. A live person answers, day or night. We book a time, and you get a live arrival window you can track from your phone, not a four-hour guess.
- 2
We measure and diagnose. Sean Mackey or one of our lead techs measures the rough opening, checks the existing frame for rot, and tells you honestly whether the slab, the frame, or both need to go. We write the price down before any work starts.
- 3
Parts decision. If it’s a slab-only replacement, we source a genuine Therma-Tru slab or a quality aftermarket match depending on your budget and warranty situation. We explain the trade-off in plain language: OEM keeps the manufacturer warranty alive; aftermarket often costs 20 to 30 percent less.
- 4
Installation and weatherproofing. We pull the old door, repair or replace the frame, flash the opening properly for coastal conditions, and set the new door. We use sill pan flashing under the threshold, which is the step that prevents the bottom-corner rot we see on so many Long Beach Therma-Tru doors.
- 5
Test and document. We check the reveal on all sides, cycle the door ten times, test the latch and deadbolt, and run a smoke test around the weatherstripping. You get before-and-after photos.
- 6
The 365-Day Done Right Promise. Every Therma-Tru replacement is covered in writing: 365 days, parts and labor. If something isn’t right, we come back and make it right, no charge and no argument.
What Therma-Tru Door Replacement Costs in Long Beach
Here are real numbers for the Therma-Tru jobs we do most in Long Beach:
- Slab-only replacement (Smooth-Star or Fiber-Classic): $1,800 to $2,800 installed, depending on size, glass, and hardware.
- Full entry system replacement (Classic-Craft with decorative glass): $2,800 to $4,200 installed, including new frame, threshold, and weatherstripping.
- Threshold and frame repair without slab replacement: $600 to $1,100.
What moves the price: door width (36 inches is standard; 42 inches costs more and sometimes needs a custom order), glass package (decorative lites add $300 to $800), and whether your existing frame is salvageable. We don’t charge a “brand premium” for Therma-Tru work. You get a written, line-item price before we order anything. Call (562) 317-8865 for an exact quote on your door. The estimate is free.

Why Long Beach Homeowners Call Juniper Windows Long Beach for Therma-Tru Work
We’ve been installing doors and windows in Long Beach since 2001, and we’ve seen what the marine layer does to an entry door. That’s why our Therma-Tru replacements are built around weatherproofing first: sill pan flashing, sealed rough openings, and thresholds that won’t corrode in salt air. Every job gets a written price before anything starts. Every job is backed by the 365-Day Done Right Promise in writing. Our techs are background-checked and uniformed, so you know exactly who’s at your door. And if Therma-Tru isn’t the right call for your situation, we carry PGT, CGI, CWS, and ES Windows too. We’ll tell you which product actually fits your Long Beach home instead of selling you what’s easiest for us. The name Juniper comes from a hardy evergreen that handles sun, wind, and cold without giving out. That’s the standard for every door we hang.
FAQs
No, not if the slab itself is a genuine Therma-Tru product installed by a qualified contractor. Our labor is covered separately under the 365-Day Done Right Promise. If we install an aftermarket slab to save you money, the Therma-Tru warranty on the original door no longer applies, and we explain that clearly before you decide.
Yes, in most cases. Smooth-Star doors have a smooth finish in standard Therma-Tru colors, and Fiber-Classic and Classic-Craft lines have wood-grain patterns that we can match closely. For an exact match, we order the slab from Therma-Tru’s current color chart. Faded doors won’t match perfectly to brand-new material, so we’ll tell you honestly if a full frame-and-door replacement makes more sense than trying to blend old and new finishes.
Once the slab arrives, installation takes one day. If we’re replacing the full frame, it can stretch to a day and a half. Ordering a custom door typically takes two to four weeks; stock sizes often arrive within a week. We give you a real timeline when we quote the job, not an optimistic guess.
If the slab is cracked, warped, or delaminating, replace it. If the problem is the threshold, weatherstripping, or hinges, repair usually makes sense and costs $600 to $1,100. We’ll tell you which one applies to your door after we inspect it, and we won’t sell you a slab you don’t need. Call (562) 317-8865 and we’ll give you an honest read.
Yes. We replace full door systems with integrated glass, including sidelites and transoms. If the glass seal has failed but the slab is still solid, we can sometimes replace just the glass insert, though on older Therma-Tru doors the insert frame is often too far gone. We’ll show you the options and the price for each before you commit.
Written by Sean Mackey, Owner & Lead Installer, Juniper Windows Long Beach at Juniper Windows Long Beach, serving Long Beach and nearby areas.
Six Reasons Homeowners Choose Juniper Windows Long Beach
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.