One Fogged Window: Replace the Unit, Not Just the Glass
There is a cloud between the panes that no cleaning touches, and the frame around it is as old as the glass.
Reply within one business day. Or call / text 763-250-3621.
To replace one fogged window, JMB Builders replaces the whole unit, not just the glass: the window with the failed seal comes out, and a new window with new glass, frame, weatherstrip and hardware goes in and is trimmed. One fogged window is a welcome job across the Twin Cities metro, priced per window, window included, in stock or custom ordered with the lead time on the quote. Photo reply within one business day, or a free in-home estimate.
- Whole window replaced, not just the glass
- Priced per window, window included
- In stock or custom ordered; lead time on the quote
Fog between the panes means the seal around the edge of the glass unit has failed. Moist air gets in, condenses on the inside of the glass, and leaves a haze or a mineral stain that cannot be cleaned. The argon that was between the panes is long gone. That window is no longer insulating the way it did when it was new.
The seal fails because the window is old, and the rest of the window is the same age. The weatherstrip is flat, the balances or the crank are tired, and the frame has taken as many winters as the glass. On one fogged window we replace the whole unit: new glass with a new seal and gas fill, a new frame that seals to the wall, new weatherstrip and new hardware, all under one order. You get one new window instead of new glass in an old one.
A common size in white vinyl is often in stock at our supplier and can be picked up for the install. A color, grille pattern or odd size is custom ordered to your opening with the lead time written on the quote. The new window goes in as an insert when the old frame is sound, or full frame when it is not, and is trimmed inside and out. Painting is quoted as a separate line, or leave it primed and caulked and paint it yourself.
Get a written quote for this job
Three photos and a sentence is enough: a reply within one business day, or ask for a free in-home estimate. Or text the photos to 763-250-3621.
What you supply
- Photos of the fogged window from inside and outside, and of the windows beside it
- A photo of any brand label on the frame or glass spacer if you want it matched
- Your pick of style, color and glass, or ask for the in-stock option
- Paint or stain color for new trim, or leave it primed
What JMB supplies
- A measure of the opening and a check of the frame and sill
- The new window, in stock or custom ordered through ABC Supply in options such as MI Windows or Silver Line
- Removal of the fogged window and haul-away
- Insert or full-frame install with sill pan or flashing tape, shims, foam and sealant
- Interior stops or casing and exterior capping or trim, primed and caulked
- Painting quoted as a separate line, or leave it primed and paint it yourself
- Photos of the finished window in your job folder
How it is priced: per window
Quoted in writing from your photos, with a reply within one business day. What moves the number:
- Size and style of the window: a slider or double-hung vs. a casement or a picture window
- In-stock white vinyl vs. a custom ordered color, grille pattern or glass package
- Insert into a sound frame vs. full frame when the sill or frame is soft
- Matching the new window to the others in color, glass and grilles
- Exterior finish: capping, PVC trim or siding worked around
- Interior trim kept, matched or replaced
- Second story or hard-to-reach openings
Send photos of the window inside and out and one of the whole wall. The quote lists the window, the install and any trim on separate lines.
How long it takes
Half a day on site for most single windows, a day if the frame comes out. An in-stock window is picked up for the install; a custom ordered one has its lead time written on the quote.
How your project works
- 1
Send photos, get a written quote
Send three photos of the space and a sentence about what you want. You get a clear, itemized reply within one business day. Prefer a look in person? A free in-home estimate is always an option.
- 2
Pick materials, or bring your own
We help you choose profiles and materials that fit the house and the budget, or match your existing millwork exactly — or you buy the door or trim yourself and we install it. Everything is confirmed before the crew is scheduled.
- 3
Clean, precise installation
The crew shows up on time, protects floors and furniture, and installs with tight joints and consistent reveals. Photos of the finished work go in your job folder.
- 4
Walkthrough and invoice
We walk the finished work with you. If anything is not right, we fix it before we call the job done. Then one invoice, paid by check or direct deposit — no card fees, no payment links.
Situations and options
In-stock replacement
A common size in white vinyl that the supplier has on the shelf. The quickest path from a fogged window to a new one, set as an insert when the old frame is sound.
Matched to the other windows
The fogged window sits in a row of good ones. The new one is custom ordered in the same color, glass and grille pattern so it reads as part of the set.
Upgraded glass on the new window
Since the window is new anyway, pick the glass for the wall it faces: a low-e coating for a west window, triple pane for a cold north bedroom, obscure glass for a bathroom.
One Fogged Window: Replace the Unit, Not Just the Glass: questions, answered
Should I replace the glass or the whole window when one window is fogged?
For one fogged window, JMB Builders replaces the whole window. The seal failed because the unit is old, and the frame, weatherstrip and hardware are the same age. A new window gives you new glass with a fresh seal plus a frame that seals to the wall, all under one order, instead of new glass in a worn frame.
Why does only one of my windows have fog between the panes?
Seals fail one at a time. The window that gets the most sun, the one that was opened and closed the most, or the one with a small defect from the factory usually goes first. Once one has gone, the others of the same age are not far behind, and we can quote the next one when it shows.
Is one fogged window too small a job?
No. One window is a welcome job for JMB Builders. It is measured, ordered through our supplier, installed and trimmed like any other window. Send photos and we reply within one business day, or book a free in-home estimate.
Can the new window be ready quickly for a fogged window?
If a common size in white vinyl fits the opening, it is often in stock at our supplier and can be picked up for the install once the measure is done. A matched color, grille pattern or odd size is custom ordered and built to your opening, and that lead time is written on the quote.
Does a new window fix the condensation inside the glass for good?
Yes. A new sealed glass unit comes with a fresh edge seal and gas fill, so there is no moisture between the panes. It also comes in a new frame with new weatherstrip, which is why one fogged window is replaced as a unit rather than as glass alone.
Will the new window look like the fogged one it replaces?
If you want it to. We match color, glass and grilles to the windows beside it as closely as current lines allow, and tell you before ordering where it will differ. Or use the chance to change the style, such as a casement where a slider was.
Recent JMB work, from our job log
59 installs recorded across 30 Twin Cities communities since Dec 2025. Window and door installs for homeowners and the builders we work with. Counts come straight from our job log; no customer names.
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Read morePage reviewed October 25, 2026 · JMB Builders LLC, MN license BC809005 · All windows pages
Where we work
Window Replacement & Installation near you
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