Bay & Bow Windows in Lantana, FL

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Bay & Bow Windows in Lantana, FL

Bay and bow windows replace a flat wall section with a projected, angled frame that adds interior volume, draws in significantly more natural light, and changes the exterior profile of the home. In Lantana, where properties sit close together and coastal light is a genuine asset worth capturing, that projection does real work. At Sightline Windows & Doors, every Window Installation begins with a measured survey – the document you keep – and the written price on that survey is the same number on the final invoice, no adjustments after the fact.

If you have questions before we visit, call us at (561) 461-2062 – a live person answers, every hour of every day. Or read below and arrive at the conversation already knowing what to expect. This page is part of our full Window Installation in Lantana service, which covers every opening type we handle across Palm Beach County.

What Makes Bay and Bow Windows Different

Both styles share the same basic idea: replace a flat, flush window with one that pushes outward from the wall plane, creating a shallow interior ledge or seat and a wider sightline to the outside. The difference is geometry.

A bay window uses three panels – a large fixed center flanked by two angled side units, typically set at 30 or 45 degrees. The result is angular and defined, which suits the craftsman and Mediterranean revival homes you see throughout the older blocks of Lantana. A bow window uses four, five, or six equal-width panels curved into a gentle arc. The softer line reads more elegantly on ranch-style and coastal contemporary homes, which make up a large portion of the housing stock between Lantana Road and Ocean Avenue, and pairs well with specialty options like Garden Windows.

From a performance standpoint, the framing system matters more than the shape. In Lantana’s coastal exposure zone, glazing rated for high-velocity hurricane conditions is not an upgrade – it is the code baseline for a structural opening of this size. Every bay or bow Sightline installs is specified to meet or exceed Florida Building Code wind-load requirements for the project address before we write a single number on the survey form.

When You Need Bay & Bow Windows

• A room that reads dark despite good orientation. Flat windows capture only what’s directly in front of them. A bay or bow projection widens the capture angle so morning or afternoon light reaches wall surfaces it never touched before – relevant in Lantana’s dense residential blocks where neighboring structures cut into direct sun.
• An existing bay unit with failed glazing seals or rotted wood sub-framing. Older aluminum or wood bay frames installed before the 2000s frequently show fogged glass, visible separation at the head or seat board, and water intrusion at the corner joints. Repairs to these assemblies are rarely cost-effective once the structural framing is compromised.
• A desire to add interior square footage without a full addition. A deep bay projection – 18 to 24 inches off the wall plane – creates a genuine window seat or display shelf. In smaller Lantana bungalows under 1,400 square feet, that gain changes how a room functions.
• Drafts and elevated cooling bills tied to a specific window wall. Single-pane or early double-pane units in bay frames have U-factors well above 0.40; modern low-e insulated glass in the same frame position can drop that figure below 0.25, reducing the cooling load on rooms that face south or west – the high-heat exposure in most Lantana floor plans.
• An insurance-driven window replacement that now requires impact-rated glazing. Florida insurers have tightened requirements for coastal ZIP codes. If your policy renewal triggers a full opening inspection and your existing bay unit is not impact-rated, replacement is frequently required rather than optional.
• Visible frame separation or cracking at the side-unit miters. The corner joints in a bay assembly bear load and flex. When caulk fails and the frame itself separates, air and water entry is ongoing. This is a structural concern, not a cosmetic one.

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Our Bay & Bow Windows Process

1. Measured Survey and Written Scope. A Sightline technician – background-checked, uniformed, and identified by license number before arriving – takes every critical dimension: rough opening width, wall depth, ceiling angle if the head is raked, soffit clearance outside, and the existing sill plate condition. The survey also notes the current glazing type, frame material, and any sub-framing concerns. You receive this document. The written price cannot differ from it – that is Haven Clause 1 in practice.
2. Product Specification by Opening, Not by Inventory. We specify from eight manufacturer lines. For a Lantana bay or bow, we routinely work with CGI and CWS impact-rated units, which carry Miami-Dade Notice of Acceptance ratings the Florida Building Code recognizes. If the project calls for a premium aluminum-clad wood interior for a historic or high-end renovation, we price that option alongside the vinyl alternatives so you can compare on paper. No line is favored by margin.
3. Permit Coordination. A bay or bow installation that alters the structural wall opening requires a permit in Palm Beach County. Sightline handles the application, coordinates the required engineering documentation where the framing changes, and schedules inspections. The permit number goes on the job record alongside the photo documentation.
4. Removal and Frame Preparation. The existing unit comes out in sections. The rough opening is inspected for moisture damage, pest activity, and fastener condition before any new framing is set. In Lantana homes built in the 1960s through 1980s – a substantial portion of the housing stock near the lake – we regularly find aluminum frames bedded in deteriorated sealant against CBS block walls. That substrate gets cleaned and reprimed before the new frame touches it.
5. Installation, Sealing, and Head/Seat Board Fitting. The new bay or bow frame is set to level and plumb, anchored per the manufacturer’s tested installation protocol for the product’s wind-load rating, and sealed at the perimeter with a closed-cell backer rod and sealant system rated for UV and salt-air exposure. Interior head and seat boards are scribed and fitted; exterior soffiting is restored to match the existing finish.
6. Documented Photo Record and Walk-Through. Before we leave, the job is photographed at every critical point – frame alignment, sealant bead, interior finish, and exterior profile. You receive the photo record as part of the standard job file. The 365-Day Done Right Promise is written into that file: if something is not right within the first year, we make it right.

Bay & Bow Windows Pricing in Lantana

Bay and bow windows in Lantana run higher than single-unit replacements because the assembly is larger, the framing work is more involved, and impact-rated glazing in a curved or angled configuration costs more to produce than a standard rectangle. Below are the ranges we see on real jobs in this market. Your written survey will give you a single fixed number, not a range.

What moves a project toward the higher end of these ranges: widening the rough opening, selecting aluminum-clad or composite frames over vinyl, upgrading to a lower U-factor or higher SHGC specification (the solar heat gain coefficient, which controls how much of Florida’s radiant energy the glass admits), adding interior wood seat boards with a stained finish, or a coastal exposure classification that requires a higher wind-load-rated product.

What keeps a project at the lower end: a standard opening size that requires no structural framing work, a vinyl frame in a color we stock rather than a custom order, and an existing sub-sill that is sound enough to anchor to directly.

The written estimate is free. Call (561) 461-2062 to schedule the measured survey, or read on for the questions we hear most often before that call.

FAQs – Bay & Bow Windows in Lantana

Do bay and bow windows in Lantana need to be impact-rated?

Yes – any new window installation in Lantana that involves a structural opening requires impact-rated glazing under Florida Building Code Section 1609 and Palm Beach County’s local amendments. Bay and bow assemblies are large openings, which means the wind-load engineering requirements are more stringent, not less. A standard insulated glass unit without an impact interlayer does not satisfy the code for this location, regardless of what a contractor may quote you. We specify products – typically from the CGI or CWS lines – that carry Miami-Dade NOA documentation, which is the standard Palm Beach County inspectors reference. If you have a written estimate from another contractor that does not mention impact rating, bring it to us for a free second opinion.

How long does a bay or bow window installation take in Lantana?

The installation itself runs one to two days for a standard three- or four-panel unit, assuming no structural framing surprises. Lead time from signed survey to installation is the longer variable: custom bay and bow units are fabricated to the measured survey dimensions and typically arrive in four to eight weeks depending on the manufacturer line and current production schedules. Impact-rated units in non-standard sizes tend toward the longer end of that window. We give you the expected lead time in writing at the survey stage – it goes on the same document as the price.

Can I add a window seat to a new bay or bow installation?

Yes, and it is worth planning at the survey stage rather than after installation. The depth of the projection – typically 14 to 24 inches for a residential bay – determines whether the seat board is functional or decorative. At 18 inches of projection or more, a properly built seat can carry storage below it, which makes it a reasonable renovation investment in smaller Lantana homes. We scope the seat board and any storage framing as part of the original written price so there are no additional charges discovered after the frame is set.

What is the difference between a bay window and a bow window in terms of cost and function?

Bay windows cost less to fabricate and install at equivalent sizes because three flat panels in a defined angle are simpler to engineer and ship than four to six panels curved into an arc. A bow window’s curved sill and head also require more site carpentry to finish neatly, which adds labor time. Functionally, the bay window’s angled side panels – typically operating Casement Windows or double-hungs – provide better ventilation access than a bow’s narrower flanking panels. The bow window’s arc reads softer from the street and suits longer wall runs. For Lantana homes under 1,600 square feet, the bay is more common; for larger coastal properties along the East Ocean Avenue corridor, we see more bow specifications. Your survey will show you both options priced side by side if you want to compare.

Why Sightline for Bay & Bow Windows in Lantana

The short version: you get a written price before anything is ordered or opened, and the number on the invoice matches that document exactly. If you have seen how many Lantana window quotes work – a rough range at the door, then adjustments discovered during demolition – you understand why Haven Clause 1 exists as a founding principle rather than a promotional claim.

Sightline has completed more than 18,000 window and door installations since 2012, every one with a written scope and a photo record. The technicians who arrive at your door are background-checked, uniformed, and identified by license number in advance – Haven Clause 3 (Verified Crews) – and every completed installation is covered by the 365-Day Done Right Promise. If something is not right within that first year, we return and correct it. That promise is written into your job file, not offered verbally and forgotten.

For bay and bow work specifically, the measured survey is where we earn or lose the job. Getting the projection depth, the structural header clearance, the exterior soffit line, and the impact-rating specification right before the product is ordered prevents every expensive problem that shows up when a unit is fabricated to approximate dimensions. We take that survey once, correctly, and you keep the document.

To schedule a measured survey for a bay or bow window in Lantana, call (561) 461-2062. The estimate is free, the price is written, and the survey is yours to keep whether you proceed with us or not.

Written by Sonia Raman, Owner at Sightline Windows & Doors Lantana, serving Lantana.