Patio Door Replacement in North St. Paul, MN
The metal patio door on your North St. Paul house grows frost on the inside of the frame every January and the glass is a single sheet.
Reply within one business day. Or call / text 763-250-3621.
Patio door replacement in North St. Paul MN is often the aluminum slider an earlier owner added to a 1940s–60s house: single glass, a bare metal frame that frosts inside, a worn track, in a plaster wall. JMB Builders measures the opening, orders an insulated door, repairs the sill, sets it in a sill pan and trims it to suit the room. Priced per door. Send photos and we reply within one business day, or book a free in-home estimate.
- Priced per door, new door included
- Insulated frames and glass replace frosting aluminum
- Jamb extensions and casing fitted to a plaster wall
North St. Paul's 1940s–60s ramblers and story-and-a-halfs did not come with patio doors. Many got one in the 1960s or 70s, when an owner cut a back window or the back door opening into a slider: an aluminum frame with no thermal break, a single sheet of glass or an early double pane that has long since fogged, and a track that the rollers have worn into a groove. On a cold night the inside of the frame frosts, the glass sweats onto the sill, and the room it opens from is the coldest in the house.
The replacement is an insulated door, vinyl or fiberglass, with insulated glass, which ends the frosting because the inside surface stays above the dew point. The wall it goes into is the part that takes care. Postwar houses here have plaster or early drywall on 2x4 framing, and the opening a previous owner cut is often a little out of square and a little under or over a stock size. We measure it as it is, order the door to fit, and fit jamb extensions and casing so the new door meets the plaster cleanly, matching the casing in the room where you want it to.
Underneath, the old door comes out, the subfloor and rim are checked and soft wood replaced, a sill pan and flashing go down, and the frame is set level and square before foam and sealant. Narrow lots mean the work outside is planned for the side yard you have. North St. Paul is a scheduled full-day trip from Zimmerman, so a patio door often goes with windows or a front door. 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
- Slider or hinged door, frame material, color and glass
- Which panel slides, or let us suggest from the room and the yard
- Photos of the door inside and out, the frame and track up close, and the casing in the room
What JMB supplies
- In-person measure and the door order, with options such as MI Windows, Silver Line or ProVia
- Removal and haul-away of the old aluminum door and trim
- Subfloor and rim repair under the sill as found
- Sill pan, flashing tape, low-expansion foam and exterior sealant
- Frame set level and square in the opening as it is; rollers, lock and screen adjusted
- Jamb extensions and casing fitted to the plaster wall, matched to the room where you want
- Exterior trim to suit the siding, and photos in your job folder
How it is priced: per door
Quoted in writing from your photos, with a reply within one business day. What moves the number:
- Slider vs. hinged French door, and the number of panels
- Vinyl vs. fiberglass, and the glass package
- An opening cut by a previous owner that is out of square or off a stock size
- Rot under the sill or at the rim once the old door is out
- Jamb extensions and casing matched to the room's trim
- Exterior trim against stucco, brick or lap siding
Send a photo of the door from inside showing the casing, one from outside, and a close-up of the frame and track. Tell us if the frame frosts in winter.
How long it takes
One patio door: most of a day on site in a sound opening. Sill repair or plaster patching adds hours. Lead time depends on the door ordered and is 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
Vinyl slider
The common replacement for an old aluminum door in a standard-size opening. Insulated frame and glass, no paint, and an adjustable lock.
Fiberglass slider
A stiffer frame for a wider opening or a west-facing wall, in colors that match fiberglass windows on the same order.
French patio door
A hinged pair that suits an older house and seals with compression weatherstrip. Needs swing room inside or out, which a small postwar dining room may not have.
Patio Door Replacement in North St. Paul, MN: questions, answered
Why does the frame of my old patio door frost on the inside?
The frame is aluminum with no thermal break, so the cold outside runs straight through the metal to the inside face, and the moisture in the room freezes on it. Single or failed glass does the same. A new vinyl or fiberglass door with insulated glass keeps the inside surface above the dew point, and the frost stops.
The patio door in my North St. Paul house was added by an earlier owner. Does that matter?
It matters for the measure, not for whether it can be done. Openings cut in the 1960s and 70s are often a little out of square and not quite a stock size, and the header may be light. We measure the opening as it is, order the door to fit, and check the header when the old door is out. It is a normal job.
Will the new door's trim match the old casing in the room?
Yes, where you want it to. Postwar houses have thicker plaster walls, so the new door gets jamb extensions to reach the wall surface, and the casing is matched to the profile in the room or kept simple if the room has been updated. Paint-grade casing comes primed.
Do I need a permit to replace a patio door in North St. Paul?
The City of North St. Paul building department sets that rule. Widening an opening or changing framing is the usual trigger in most cities; a same-size swap is often handled differently. We check for your address and pull a permit when one is required.
Is a vinyl patio door good enough or should I get fiberglass?
In a standard six-foot opening on a sheltered wall, a good vinyl slider does the job and costs less. Fiberglass has a stiffer frame, which matters in a wider door or on a wall that takes wind and afternoon sun, and holds dark colors better. We quote both if you want to see the difference.
Can the patio door go on the same trip as my windows?
Yes. North St. Paul is a scheduled full-day trip from Zimmerman, so the door goes on the same order as the windows in a matching color and is installed during the same visit.
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 27, 2026 · JMB Builders LLC, MN license BC809005 · All by city pages
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