Window Installation & Replacement: Your Questions Answered
If you’ve been putting off window replacement because you’re not sure what it actually involves — how long crews will be in your home, what it costs, whether you need a permit — you’re in the right place. These are the questions Denton and DFW homeowners ask us most often, and we’re going to answer them straight.
How long does window installation take?
For most homes in the DFW area, a full window replacement is a single-day project. A crew replacing eight to twelve windows in a standard Lewisville or Flower Mound ranch-style home typically wraps up in six to eight hours. Larger homes — think a two-story in Frisco or a sprawling layout in The Colony — may run into a second day if you’re replacing twenty or more windows.
What slows things down isn’t usually the windows themselves. It’s conditions like rotted framing that needs repair before a new unit can be set, or older Denton homes where the rough openings have shifted over decades and need shimming. A good installer will flag these possibilities during the pre-installation walkthrough, not after they’ve already pulled your old windows out.
The honest benchmark: Plan for one full day. If your installer quotes you significantly less than that for a whole-house replacement, ask specifically how they’re going to handle trim work, caulking, and cleanup — those steps take real time.
What factors affect the cost of window replacement?
Window replacement pricing has a lot of moving parts, and quotes can vary widely even within the same Denton or Carrollton neighborhood. The three biggest cost drivers are the window brand and product line, the size and configuration of your openings, and the condition of your existing frames.
A standard double-hung vinyl window from a mid-tier line like MI Windows will cost considerably less than an equivalent unit in Andersen’s 400 Series or a Pella fiberglass product. Neither choice is wrong — the right answer depends on your home’s age, your budget, and how long you plan to stay in the house. Labor costs in North Texas typically run $150 to $300 per window for straightforward replacements, though that number climbs if a crew encounters structural issues.
Full-frame replacement (where the entire window unit, frame included, is removed and rebuilt) costs more than insert replacement (where a new window slides into an existing frame). If your frames are solid wood in good condition, insert replacement is often the smarter financial call. If they’re rotted or out of square — common in older Addison and Denton homes — full-frame is usually the right move even if it costs more upfront.
Should I replace all my windows at once or do it in phases?
Both approaches work, and the right answer usually comes down to budget and urgency. Replacing all windows in a single project gives you a consistent look across your home, one mobilization cost instead of several, and often a better per-unit price from your contractor. If you have fifteen windows and you’re replacing all fifteen, you have more room to negotiate than if you’re doing three at a time.
That said, phased replacement makes sense when a handful of windows are clearly failing — fogged glass, broken seals, frames that won’t lock — while the rest are still functional. A homeowner in Plano who has two south-facing windows that are driving up their summer energy bills doesn’t necessarily need to replace the north-facing windows that are still performing fine.
Our honest take: If more than half your windows are original to a home built before 2000, a full replacement usually pencils out better over a five-year horizon than repeated partial projects.
What’s the difference between new construction windows and replacement windows?
This distinction trips up a lot of homeowners, and it matters practically. New construction windows have a nailing fin — a flat flange around the perimeter — that attaches directly to the wall framing. They’re designed to go in during the building process before exterior cladding is applied.
Replacement windows are designed to fit into an existing opening without disturbing the surrounding wall, siding, or interior trim. For the vast majority of Denton, Corinth, and Grapevine homeowners replacing windows in an existing home, replacement windows are the correct product. Using a new construction window in a retrofit situation requires significantly more labor and often means tearing into your exterior siding — a scope that changes the project entirely.
If you’re doing an addition or a major renovation where walls are already open, new construction windows may be appropriate. Your installer should clarify which product category they’re quoting before you sign anything.
Which window brands does JBN Windows carry, and how do I choose?
We work with Andersen, Pella, and MI Windows, and each brand serves a different part of the market well. Andersen’s 100 Series (Fibrex composite) and 400 Series (wood-clad) are strong performers for homeowners who want longevity and are willing to pay for it. Pella’s Impervia fiberglass line holds up exceptionally well in the Texas heat cycle — fiberglass expands and contracts less than vinyl, which matters when your Frisco home swings from 20°F in January to 108°F in July.
MI Windows offers solid value in the mid-range vinyl category. For a Lewisville or The Colony homeowner on a tighter budget who needs a full-house replacement, MI products deliver good performance without the premium price tag of the name brands.
The honest answer is that brand matters less than proper installation. A premium Andersen window installed poorly will underperform a mid-range MI window installed correctly. Ask any contractor you’re considering how they handle the seal between the window and the rough opening — that’s where most long-term problems originate.
For more on specific window styles, see our pages on double-hung windows, sliding windows, and bay and bow windows.
What happens to my old windows after removal?
Old windows removed during replacement are typically hauled away by the installation crew as part of the project. At JBN Windows, we handle disposal — you don’t need to arrange a dumpster or haul anything yourself.
If your old windows are in reasonable condition (intact glass, functional hardware), some installers will offer to leave them for you to donate or sell. Habitat for Humanity ReStores in the DFW area accept used windows in working condition. It’s worth asking if this matters to you, but don’t expect it as a default.
Do I need a permit to replace windows in Denton or surrounding cities?
Permit requirements vary by municipality, and this is an area where you want a clear answer before work starts. In most DFW cities — including Denton, Frisco, Carrollton, and Plano — like-for-like window replacement (same size, same location, no structural changes) typically does not require a permit. However, if you’re changing the size of an opening, adding a window where there wasn’t one, or converting a window to a door opening, a permit is almost certainly required.
The safest approach is to ask your contractor directly: “Will you pull a permit for this project, and if not, why not?” A contractor who dismisses the question or says permits are never required for window work in Texas is giving you an incomplete answer. Requirements change, and the responsibility for unpermitted work ultimately falls on the homeowner when it comes time to sell.
How do I know if my windows actually need replacing?
The clearest sign isn’t visible from outside — it’s what you feel standing near a window on a July afternoon in Corinth when your HVAC is running. If you can feel heat radiating off the glass from two feet away, the window is doing almost nothing to slow heat transfer. Single-pane windows common in pre-1990 North Texas homes have an R-value near 1, compared to R-3 or better for a modern double-pane unit.
Other reliable indicators: condensation forming between the panes (not on the interior surface) means the seal has failed and the insulating gas has escaped. Windows that require a prop to stay open, that won’t lock securely, or that have visible gaps between the frame and the wall are past their functional life. If your home is in Addison or an older Denton neighborhood and the windows are original to a 1970s or 1980s build, replacement is almost certainly overdue regardless of how they look.
How should I prepare my home for installation day?
Clear a three-foot path around each window being replaced, both inside and outside if accessible. Move furniture, take down curtains and blinds, and remove anything fragile from windowsills. Outside, clear planters, patio furniture, or landscaping that might block the crew’s access.
Installers will lay drop cloths and work carefully, but dust is unavoidable when you’re cutting caulk and pulling frames. If you have pets, plan to keep them in a separate room or out of the house for the day — open walls and unfamiliar crew members are stressful for animals, and an open window opening is a real escape risk.
What does the warranty on new windows actually cover?
This varies by manufacturer, and the fine print matters. Most major brands — Andersen, Pella, MI — offer a limited lifetime warranty on the glass unit (the insulated glass package) and a separate warranty on hardware and frames. “Limited lifetime” typically means the warranty is transferable once to a subsequent homeowner but has exclusions for damage caused by improper installation, misuse, or certain weather events.
The installation warranty is separate from the product warranty and comes from your contractor, not the manufacturer. Ask specifically: “If a window leaks or fails to seal in year two, who do I call, and what does that process look like?” A reputable installer in the Denton or DFW area will give you a written answer to that question.
Ready to get a straight answer on your project?
Call JBN Windows at 469-340-0834 or request a free quote for your Denton, Corinth, Addison, or DFW home. We’ll tell you what we see, what we recommend, and what it costs — no pressure, no runaround.
