Patio Door Replacement in West St. Paul, MN
The aluminum slider in your West St. Paul rambler has frost on the inside of the frame by December and a puddle on the floor by March.
Reply within one business day. Or call / text 763-250-3621.
Patio door replacement in West St. Paul MN is a 1960s aluminum slider in a rambler kitchen: the frame frosts inside all winter, the glass fogs, and the thin frame leaves a gap when it comes out. JMB Builders measures the opening and wall depth, orders a door to fill both, sets it in a sill pan with flashing, and trims it. 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
- Aluminum frames and the frost that comes with them gone
- Jamb extensions sized to the wall
A lot of West St. Paul ramblers still have the patio door the builder put in: an aluminum slider off the kitchen or dining room, single-pane or an early double-pane, with a frame that is nothing but metal from outside to in. Aluminum conducts cold, so on a January morning the inside of the frame is below freezing and room moisture freezes to it. By afternoon it melts and runs onto the floor, and over the years that is what rotted the sill and the subfloor in front of it.
The replacement is straightforward but has one catch. The aluminum frame is thin, and the wall was finished to it. A vinyl or fiberglass door has a deeper frame, so we measure the wall from the exterior sheathing to the finished drywall or plaster and order the door with jamb extensions to match, or add them on site, so the casing lands flat. Where the old frame comes out, the gap in the drywall and the siding is covered by the new door, its trim or a patch, and the quote says which.
The old door comes out, the sill and subfloor are checked and repaired, a sill pan goes down, flashing is lapped at the sides and head, and the new door is set level and square, foamed, sealed, and adjusted. We schedule West St. Paul as a full-day trip from Zimmerman. Our job records show 2 installs in West St. Paul, Jun–Jul 2026. 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 it from where the table and the patio steps are
- Photos of the door inside and out, the frame edge where it meets the wall, and the sill up close
What JMB supplies
- Measure of the opening and wall depth, and the door order through ABC Supply, with options such as MI Windows, ProVia or Therma-Tru
- Jamb extensions ordered with the door or built on site so the casing lands flat
- Old aluminum door and trim removed and hauled away
- Subfloor and rim repair under the sill where condensation got in
- Sill pan, flashing tape, low-expansion foam and exterior sealant
- Frame set level and square; rollers, lock and screen adjusted
- Interior casing and exterior trim to cover where the thin frame was, and finished 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 door, and the glass package
- Frame material: vinyl, fiberglass or clad-wood
- Jamb extensions and new casing to meet the wall
- Rot under the sill from years of condensation
- Drywall or plaster patching beside the old frame
- Exterior trim against lap siding, stucco or brick
- Painting of new casing, quoted as a separate line
Send photos of the door from inside with the casing in view, from outside, and the sill up close. A photo of the frost in winter helps too.
How long it takes
One patio door: most of a day on site in a sound opening. Jamb extensions and casing add an hour or two; sill repair adds more. Door lead time 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 aluminum slider: insulated frame, low-E double-pane glass, no frost. Ordered with jamb extensions to match the wall.
Fiberglass slider
A stiffer frame for a wide opening, takes a dark color, and comes with a woodgrain interior option. Same insulated frame, no cold bridge.
French or single hinged door
A compression-sealed hinged door where you want a different look off the dining room. Needs swing room inside or on the patio.
Patio Door Replacement in West St. Paul, MN: questions, answered
Why does my patio door frame frost on the inside?
The frame is aluminum with no thermal break, so it is as cold as the outside air, and the moisture in the room freezes to it. No weatherstrip fixes that. A vinyl or fiberglass frame does not conduct the cold, so the frost and the puddles stop, and the new double-pane low-E glass stays clear.
Will a new door fit where the thin aluminum frame was?
Yes, with jamb extensions. The new frame is deeper than the aluminum one, so we measure the wall and order or build extensions that bring the frame out flush with the drywall or plaster. The new casing covers the edge where the old frame sat. The quote lists the extensions and any patching.
Is the floor under an old aluminum slider usually damaged?
Often. Years of frost melting and running off the frame soak the subfloor in front of the track, and the sill goes soft. We probe it at the estimate and quote the repair with the door, and a sill pan under the new door keeps it from happening again.
Do I need a permit to replace a patio door in West St. Paul?
The City of West St. Paul building department sets that rule, and a change to the opening size or the framing is what usually brings a permit into it. We check for your address and pull a permit when one is needed.
Can I keep the same opening size?
Usually, yes. Most aluminum sliders are a standard width, and a new vinyl or fiberglass door is ordered to the same rough opening. If the old one is an odd size, the door is ordered to it. Widening the opening is possible and quoted separately.
How long does a patio door swap take in West St. Paul?
Most of a day on site, scheduled as a full-day trip from Zimmerman. The old door stays in until the new one is ready, the opening is open for a few hours, and the door is sealed and trimmed before the crew leaves.
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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