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
AfterCustom Impact Windows in Tampa, FL
Custom impact windows in Tampa are hurricane-rated, laminated-glass units built to non-standard sizes or shapes – geometric and shaped windows like arched tops, trapezoids, raked gables, and oversized picture openings – that standard off-the-shelf impact windows simply can’t fill. A properly measured and installed custom impact window protects your home against Category 4 and 5 wind loads while keeping the architectural character intact. At Winslow Windows & Doors, Ed Winslow has been overseeing exactly this kind of work since 2011, and every job carries our 36500-Day Done Right Promise: if it’s not right, we come back and make it right.
Tampa’s position on the Gulf side of the peninsula means it sits squarely in the cone of concern for Atlantic and Gulf storms alike. A standard 36″ x 60″ double-hung may be in stock at a big-box store, but the arched transom above your Westchase foyer or the raked clerestory windows in your New Tampa great room are a different matter entirely. Those openings need units ordered to precise field measurements, engineered to Florida Building Code wind-load requirements, and installed by someone who won’t hand you a ticket number and disappear. That’s where we come in.
This page lives under our broader Custom & Geometric Windows in Tampa service, which covers everything from octagonal accent windows to full-radius picture units. If your opening is irregular and needs impact protection, you’re in exactly the right place. Call us at (386) 559-6999 – a live person answers every call, around the clock.
When You Need Custom Impact Windows
- Your home has non-rectangular openings. Arched, elliptical, triangular, or trapezoidal windows can’t be filled with stock impact units. Without a properly fitted impact-rated replacement, those openings are the weak point in your storm envelope – and Tampa’s code inspectors will flag them during a permit review.
- You’re replacing old jalousie or single-pane windows in a mid-century home. Hyde Park and Seminole Heights are full of 1940s-1960s construction with original louvered or single-pane windows in unusual proportions. Custom impact replacements bring those openings up to current Florida Building Code without destroying the home’s period character.
- Your insurance renewal is coming up and your carrier is asking about opening protection. Tampa-area insurers have tightened wind-mitigation requirements since 2023. A verified Miami-Dade or Florida Product Approval number on every window in the home – including the geometric ones – is increasingly the difference between a manageable premium and an eye-watering one.
- You’re doing a new addition or room conversion. Bonus rooms, sunrooms, and garage conversions in neighborhoods like Carrollwood and Northdale often involve framed openings that don’t match any standard catalog size. Getting the rough opening and the window unit designed together from the start prevents costly reframing later.
- A contractor gave you a “close enough” quote using stock windows. We see this regularly in South Tampa, where older homes have openings that are a few inches off standard. A stock window shimmed into an oversized rough opening is not a code-compliant installation and won’t earn a wind-mitigation discount. Call us for a free second opinion on any written estimate.
- Storm damage took out a specialty window and your current company can’t source the replacement. Custom impact units from manufacturers like ES Windows and ECO Window Systems can be ordered to virtually any size and shape. If someone told you your window can’t be replaced impact-rated, that’s worth a second conversation with us.
Our Custom Impact Windows Process
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Field Measurement and Opening Assessment
We start with a site visit – no satellite measurements, no estimates based on photos. A background-checked, uniformed Winslow technician comes to your Tampa home, takes precise measurements of every non-standard opening, checks the existing rough-opening framing for rot or damage, and notes any conditions that could affect the installation. This step is what separates a window that fits from a window that merely fills the hole.
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Product Selection and Engineering
Based on your opening dimensions, your home’s wind-load zone (Tampa falls under HVHZ-adjacent exposure categories depending on the exact address), and your design goals, we select the right product from our authorized lineup. For custom impact work, we frequently turn to ES Windows and ECO Window Systems – both carry Florida Product Approval and both can produce units well outside standard catalog sizes. We’ll walk you through glass options (laminated clear, low-e, obscure) and frame finishes before anything is ordered.
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Permit Pulling
In Hillsborough County, impact window replacements require a permit and a final inspection. We handle the permit application, submit the product approval documentation, and schedule the inspection. You don’t fill out forms or make calls to the building department – that’s our job. Ed Winslow’s license number is on every permit we pull, which means full transparency and full accountability.
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Factory Order and Lead-Time Coordination
Custom units aren’t sitting in a warehouse. Lead times for non-standard impact windows typically run four to eight weeks depending on the manufacturer’s current queue. We order as soon as your permit is approved, track the order, and contact you the moment units arrive – no chasing us for updates. If you have a date-sensitive need (a closing, an insurance inspection), tell us upfront and we’ll do what we can to prioritize.
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Installation
Our crew removes the existing window, preps the rough opening, sets the new unit, applies approved sealant and flashing, and verifies operation. For impact windows, the installation method matters as much as the product itself – improper anchorage spacing voids the product approval and defeats the entire point of buying an impact-rated unit. We follow the manufacturer’s approved installation instructions exactly, because that’s the only way the window performs as tested.
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Inspection and Wind-Mitigation Documentation
After the county inspection passes, we provide you with copies of the permit, the product approval forms, and the inspection sign-off. Those documents are what your insurance agent needs to apply a wind-mitigation credit. We keep a copy on file as well – if you ever need to resubmit, call us and we can pull it up the same day.
Custom Impact Windows Pricing in Tampa
Custom impact windows in Tampa generally cost more than standard-size impact replacements, for straightforward reasons: the units are made to order, the measurement process is more involved, and the installation often requires more prep work on irregular framing. That said, the price range is wide depending on size, glass type, and complexity.
| Opening Type | Typical Installed Price Range (Tampa Market) |
|---|---|
| Small custom fixed unit (up to 12 sq ft), clear laminated glass | $650 – $1,100 |
| Medium arched or trapezoid unit (12-25 sq ft) | $1,100 – $2,200 |
| Large picture or geometric unit (25-50 sq ft) | $2,200 – $4,500 |
| Oversized or complex multi-piece assemblies (50+ sq ft) | $4,500 and up – quote required |
| Low-e or specialty glass upgrade (per unit) | Add $150 – $400 |
What moves the number up or down: glass type (clear laminated vs. low-e vs. obscure), frame color (standard white or bronze vs. custom finish), opening height from grade (second-story work adds setup time), framing condition (rotted sills need repair before the window goes in), and how many units you’re doing in a single visit. Doing three or four custom units in one job typically brings the per-unit cost down compared to scheduling them one at a time.
Permits and inspections are included in our quoted price – we don’t surprise you with a permit-fee line item at the end. Upfront pricing, no surprises on the invoice.
Seniors and veterans receive a permanent 10% discount on all work. If your total exceeds $200 in repair scope, take $40 off. And if another contractor has given you a written estimate, we’ll review it at no charge – our free second-opinion offer is always available.
Call (386) 559-6999 to schedule a free in-home estimate. Someone will actually answer.
FAQs – Custom Impact Windows
What makes a window “impact-rated” and does that still apply to custom shapes?
An impact-rated window has passed Florida Product Approval testing – specifically large-missile impact tests and cyclic wind-pressure tests – and carries a state approval number that can be verified online. Yes, custom shapes can absolutely be impact-rated; manufacturers like ES Windows and ECO Window Systems run non-standard sizes through the same approval process, and those units carry valid product approval numbers just like standard catalog sizes. The critical thing is that the unit you receive matches the approval documentation submitted with your permit. We verify that match before installation. Call (386) 559-6999 if you want us to check whether a specific unit you’ve been quoted is properly approved.
How much can I save on homeowners insurance with impact windows in Tampa?
Tampa-area homeowners with documented opening protection – meaning every window and door in the home is impact-rated and the permit and product-approval paperwork is on file – commonly see wind-mitigation credits that reduce the wind portion of their premium by 30% to 45%, though the exact figure depends on your insurer, your policy structure, and your home’s age and construction type. Your insurance agent can run the numbers once you have the wind-mitigation report in hand. We provide all the documentation your inspector needs. For a free estimate on what custom impact windows would cost for your specific openings, call us at (386) 559-6999.
How long does it take from first call to installed windows?
Typically six to ten weeks for custom impact units in the Tampa market. The breakdown: one to two weeks for measurement, product selection, and permit submission; one to two weeks for permit approval from Hillsborough County; four to eight weeks for factory fabrication and shipping. Once units arrive, we schedule installation within the week. If your timing is constrained – a home sale, an insurance inspection, a season you want to be protected before – tell us at the first call and we’ll map out a realistic timeline with you. Reach us at (386) 559-6999.
Can you replace just one custom impact window, or do I need to do the whole house at once?
We can absolutely replace a single opening. There’s no minimum-unit requirement. That said, if your home has multiple non-standard openings that aren’t yet impact-rated, we’ll point that out during the estimate – not to pressure you into a larger job, but because a single unprotected opening can compromise the wind-mitigation credit for the entire home under most insurer guidelines. We’ll give you an honest picture of what each scenario looks like, and you decide. Call (386) 559-6999 for a free in-home look at what you’re working with.
Why Winslow Windows & Doors for Custom Impact Windows in Tampa
Ed Winslow started this company in Tampa in 2011 because he saw homeowners getting handed off to subcontractors by the big national window chains – people who had no idea who was actually showing up at their door. At Winslow, every technician is background-checked and arrives in uniform. Ed’s name is on the business license, on the permits we pull in Hillsborough County, and on every job we do. That’s not a marketing line; it’s a fact you can verify.
Our 36500-Day Done Right Promise means exactly what it sounds like: if the work isn’t right, we come back and make it right. No debate, no runaround. Custom impact window installations involve a lot of moving pieces – field measurements, factory orders, permitting, inspections, flashing details – and the only way to stand behind a process that complex is to own it completely. We do.
We’re an authorized installer for ES Windows, ECO Window Systems, and other premier impact brands, and we pull every permit ourselves. When the county inspector signs off, you get the paperwork the same day. No chasing us down for documentation that should have been yours from the start.
Tampa homeowners in Westchase, Hyde Park, Carrollwood, New Tampa, South Tampa, and Seminole Heights have been trusting us with their most complicated window projects for over 15 years. We’re not the contractor who shows up once and moves on. We’re the one down the road.
Explore the full range of non-standard window options on our home page, or go deeper into specialty shapes and configurations on our Custom & Geometric Windows in Tampa page.
Ready to protect your home and keep its character? Call (386) 559-6999 for a free, no-pressure in-home estimate. Upfront pricing. A live person on the line. And Ed’s word behind every window we install.
Written by Ed Winslow, Owner at Winslow Windows & Doors, serving Tampa since 2011.
Six Reasons Homeowners Choose Winslow Windows & Doors
Impact systems engineered to design pressures up to +/-100, matched to your wind zone - your openings hold when the storm arrives.
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.
Florida homeowners average around 25% savings on the windstorm portion of their policy after protecting every opening - some homes qualify for more.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.