Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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Before
After3-Panel Sliding (3-Lite Roller) Windows in West Palm Beach, FL
A 3-panel sliding window – sometimes called a 3-lite roller – divides a wide opening into three glazed sections, with the center panel fixed and the two outer panels sliding inward on a track. It’s the right call when a single-slider or double-hung unit isn’t wide enough to fill the opening, and it gives you ventilation on both sides without swinging sash or crank hardware. In West Palm Beach, where salt air, Category-level wind loads, and strict Miami-Dade product approvals all shape what can legally go in a wall, choosing the right unit and our Window Installation services team installing it plumb and level the first time matters considerably more than the sticker price.
Sightline Windows & Doors West Palm Beach has placed these units in homes from El Cid to Ibis, from Northwood to the South End, as part of the 18,000+ windows and doors installed under the Haven Standard since 2012. Every engagement opens with a measured survey you keep, and the written price on that document is the price you pay – it doesn’t change between the quote and the invoice. If you want to talk through an opening or get a written number before any work starts, call (561) 354-3861 – a live person answers, 24 hours a day.
This page sits under our full Window Installation in West Palm Beach service, which covers every product category we install, from single-hung impact units to custom geometric openings.
When You Need 3-Panel Sliding (3-Lite Roller) Windows
- Your existing opening is too wide for a two-panel slider. Openings wider than roughly 72 inches start to flex a two-panel unit under West Palm Beach’s summer wind events. A 3-lite configuration distributes the load across more frame members and keeps the sightline – the visible glass area – proportional to the wall.
- You want ventilation on both sides of the opening. Fixed center, sliding outers means you can crack both ends for cross-ventilation, which matters in West Palm Beach neighborhoods like Flamingo Park and SoSo where homes sit close together and prevailing southeast breezes come through at an angle that benefits from bilateral airflow.
- Hurricane season is your primary concern and your current windows predate impact-rated codes. Homes built before the 2002 Florida Building Code revisions frequently have aluminum jalousie or single-pane sliding windows that won’t pass today’s wind-load requirements. A 3-lite roller in impact-rated laminated glass replaces those legally and fully.
- Your current rollers stick, jump the track, or leak air at the frame corners. In West Palm Beach’s humidity, the wool pile weatherstripping inside older aluminum sliding frames compresses and fails within a few years. A roller that drags is a sign the track has warped or the frame has racked – both are easier and cheaper to address before water intrusion starts behind the drywall.
- You’re finishing a room addition or enclosing a porch and need a wide window wall. West Palm Beach permitting requires new openings in additions to meet current Florida Product Approval standards. A 3-lite unit specified at the permit stage – with a NOA (Notice of Acceptance) number on the product – satisfies plan review without a second trip to the building department.
- Your HVAC bill has climbed and your existing sliders show visible condensation or fogging between panes. Failed insulated glass units (IGU seal failure) in West Palm Beach are common after five or six years of direct south Florida sun exposure. The solar heat gain coefficient (SHGC) on a failed IGU is functionally the same as single pane – the argon or krypton fill has long since leaked out.
Our 3-Panel Sliding (3-Lite Roller) Windows Process
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Measured Survey and Written Scope
Sonia Raman or one of our background-checked, uniformed technicians arrives at the scheduled time – Haven Clause 2 (Arrive on Schedule) is not a courtesy; it’s written into the job. We measure the rough opening at three points vertically and three horizontally because old West Palm Beach construction – particularly CBS (concrete block structure) homes in neighborhoods like Northwood Hills – settles unevenly and a nominal measurement will put you at a 3-panel unit that binds in the frame by year two. The survey document you receive at the end of this visit is the same document that becomes your invoice. Nothing is added later.
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Product Specification by Opening and Budget
We draw from eight manufacturer lines. For 3-lite rollers in West Palm Beach, the most common specifications we see are impact-rated aluminum units from CWS or ES Windows, including Awning & Hopper Windows when the project calls for them, both of which carry Miami-Dade Notice of Acceptance approval and are available in low-profile frames suited to the narrower wall depths common in West Palm Beach’s 1950s-1970s CBS stock. For homeowners prioritizing SHGC performance in west- or south-facing walls, ECO Window Systems offers a line with notably lower solar heat gain numbers that we’ve specified in several Flamingo Park and El Cid jobs where afternoon heat gain through a wide west window was driving cooling costs. We name the product line, the Florida Product Approval number, the U-factor, and the SHGC on the written scope – because Haven Clause 1 (Have It In Writing) means the specification and the price travel together.
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Permit Pulling and Plan Review
West Palm Beach window replacements that change frame size, frame material, or glazing type require a permit from the City of West Palm Beach Building Division. We pull the permit – you don’t chase a counter window. The Florida Product Approval number for the unit we specified goes on the permit application, and our license number is on every document submitted. Haven Clause 3 (Verified Crews) means the technician named on the permit is the technician on your site.
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Frame Removal and Opening Preparation
Older aluminum sliding windows in West Palm Beach are typically set in a bed of exterior caulk directly against a CBS or frame wall with a stucco return. We remove the existing frame without damaging the stucco return when the profile allows, check for water infiltration in the rough sill and the adjacent drywall or plaster, and document what we find photographically before anything new goes in. If the sill plate shows moisture damage – which we see regularly in homes within a mile of the Intracoastal where drive rain is persistent – we document it and scope the repair before proceeding. No surprises is Haven Clause 5.
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Installation, Shimming, and Sealing
The 3-lite frame goes in plumb, level, and square – checked with a 6-foot level and a diagonal measurement before a single fastener is set. In CBS construction, we anchor into the masonry at manufacturer-specified intervals, using the fastener schedule from the Notice of Acceptance document, not a generalized rule of thumb. Exterior sealing uses a flexible, paintable sealant rated for south Florida UV and salt exposure. Interior trim and finishes are restored to pre-installation condition.
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Inspection, Photo Record, and 365-Day Done Right Promise
After the city inspector signs off, we conduct our own operational check: both outer panels roll, lock, and seal correctly; the weep holes at the sill drain outward; the weatherstripping makes full contact across the frame. Every visit produces a documented photo record – Haven Clause 4 (Evidence on Every Job). That record is yours. The 365-Day Done Right Promise is stamped on the job: if it’s not right within a year, we make it right. That’s written into the Haven Standard, not offered as a verbal assurance.
Before
After3-Panel Sliding (3-Lite Roller) Windows Pricing in West Palm Beach
3-panel sliding windows in West Palm Beach, including Bay & Bow Windows when specified, typically run $1,100 to $2,800 per unit installed, depending on size, glass specification, and frame material. That range reflects what we’ve quoted on actual jobs in this market – not a national average adjusted for Florida. Here’s how the variables break down:
| Configuration | Typical Installed Price Range |
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| Standard aluminum 3-lite, impact-rated, up to 72″ wide | $1,100 – $1,500 |
| Aluminum 3-lite, impact-rated, 73″ – 96″ wide | $1,500 – $2,100 |
| Aluminum 3-lite, impact-rated, low-SHGC glass, up to 96″ wide | $1,800 – $2,400 |
| Wide-format 3-lite (97″ – 120″), impact-rated, custom sill depth | $2,200 – $2,800 |
| Permit fee (City of West Palm Beach, typical range) | $75 – $250 depending on valuation |
What Moves the Price
- Opening width and glass area. Laminated impact glass is priced per square foot; a 96-inch-wide unit uses roughly 40 percent more glass than a 72-inch unit at the same height.
- SHGC specification. Low-SHGC glass (below 0.25) costs more per square foot than standard impact glass, but in a west-facing West Palm Beach wall it typically returns the premium in reduced cooling load within three to five years.
- Existing frame condition. If the stucco return, rough sill, or buck is damaged, repair is scoped and priced separately before work starts – it goes on the written document, not as a job-site add-on.
- Building type. CBS (concrete block) construction requires masonry anchors at specific intervals; frame (wood stud) construction uses a different fastener schedule. Neither is inherently more expensive, but the labor method differs.
- Miami-Dade vs. standard Florida Product Approval. West Palm Beach does not sit inside the High-Velocity Hurricane Zone (HVHZ) as Miami-Dade does, but homes in the Coastal Construction Control Line (CCCL) zone – roughly east of South Flagler Drive – may face additional specification requirements. We identify this in the measured survey.
Every quote is written before any work starts. Bring us a competitor’s written estimate and we’ll review it at no charge – a free second opinion on any written quote is standard at Sightline, not a promotional offer. Call (561) 354-3861 to schedule the measured survey and get the written number.
FAQs – 3-Panel Sliding (3-Lite Roller) Windows
How much does a 3-panel sliding window cost to install in West Palm Beach?
A 3-panel sliding (3-lite roller) window in West Palm Beach typically costs between $1,100 and $2,800 installed, depending on width, glass specification, and whether masonry repair is needed at the rough opening. That range comes from actual quotes on jobs in this market – impact-rated glass, standard aluminum frames, with the permit fee included in the scope. Call (561) 354-3861 for a written number specific to your opening – the estimate is free and the price on that document is the price you pay.
Do 3-lite roller windows require a permit in West Palm Beach?
Yes. Any window replacement in West Palm Beach that changes the size, frame material, or glazing type requires a permit from the City of West Palm Beach Building Division, along with a Florida Product Approval number for the unit. Sightline pulls the permit as part of the project scope – it’s included in the written price, not charged as a separate administrative fee after the fact. Our license number appears on every permit submission, which is part of Haven Clause 3 (Verified Crews).
Can a 3-panel sliding window be impact-rated for hurricane protection?
Yes. Impact-rated 3-lite rollers use laminated glass in both the fixed center panel and the two sliding outer panels, with an aluminum frame that carries a Florida Product Approval and – for units we commonly specify in West Palm Beach – a Miami-Dade Notice of Acceptance. The laminated glass holds together under impact rather than shattering, which is what satisfies both the building code and most homeowner insurance requirements for opening protection. We specify the product, the approval number, the U-factor, and the SHGC on the written scope before any work starts.
How long does it take to replace a 3-panel sliding window in West Palm Beach?
The measured survey takes roughly 45 minutes to an hour per opening. Once the permit is approved – typically five to fifteen business days for a standard West Palm Beach residential window permit – the installation itself runs three to five hours for a single 3-lite unit, assuming the rough opening doesn’t need structural repair. If we find water damage or a deteriorated sill plate during removal (which we see periodically in older CBS homes near the Intracoastal), we scope and document that before extending the schedule. We don’t move to the next step until you’ve seen the written scope for any additional work.
What’s the difference between a 3-lite roller and a standard two-panel sliding window?
A standard two-panel slider has one fixed lite and one sliding lite; it typically maxes out around 60 to 72 inches wide before the sliding panel becomes too heavy to operate smoothly. A 3-lite roller adds a second sliding outer panel, distributing the glass area across three sections. That configuration handles wider openings – 72 to 120 inches – without requiring oversized hardware, and it gives you ventilation from both ends of the frame. In West Palm Beach homes with wide living room or great room walls, Casement Windows or the 3-lite is the spec that fills the opening correctly rather than forcing a compromise on either width or operability.
Key Takeaways
- 3-panel sliding (3-lite roller) windows suit openings from roughly 72 to 120 inches wide and provide ventilation on both sides of the frame.
- In West Palm Beach, impact-rated glazing is the standard specification – both for code compliance and for homeowner insurance purposes.
- Installed prices in this market run $1,100 to $2,800 per unit, with the primary variables being width, glass specification, and opening condition.
- A permit is required for this work in West Palm Beach; Sightline pulls it as part of the project, with our license number on every submission.
- Every job at Sightline starts with a written price and ends with a documented photo record and the 365-Day Done Right Promise, written into the Haven Standard.
- Sightline has installed 18,000+ windows and doors since 2012, every one with a written price before work started.
Get a Written Price for Your West Palm Beach 3-Lite Roller Window
If you have a wide opening that needs a 3-panel sliding window – whether it’s a replacement in a 1960s CBS ranch in Northwood, a room addition in El Cid, or a permit-required swap on a Coastal Construction Control Line property – call Sightline Windows & Doors West Palm Beach at (561) 354-3861. A live person answers, any time of day. Sonia Raman leads every measured survey personally or assigns a background-checked, uniformed technician identified by license number before arrival. The written price you receive at the end of that survey is the price on your invoice – because that’s been the founding principle at Sightline since 2012. There’s no quote separate from the measurement, and there are no surprises on installation day.
Written by Sonia Raman, Owner at Sightline Windows & Doors West Palm Beach, serving West Palm Beach.