Patio Door Replacement in St. Paul, MN — Slider or French Door
The deck boards are level with the door track, snow piles against the glass all winter, and now the floor inside is soft.
Reply within one business day. Or call / text 763-204-2099.
Patio door replacement in St. Paul, MN: JMB Builders measures the opening, orders a sliding or hinged patio door in your size and layout, takes out the old one, rebuilds a soft sill where the deck meets the house, sets the new door on a pan with flashing, and trims it to match the room. Priced per door. Send photos and we reply within one business day.
- Priced per door, the door included
- Deck-level sills checked and rebuilt
- Casing matched to older St. Paul trim
Most patio doors in St. Paul are in two places: the postwar houses, where a slider was built in onto a patio or deck, and older homes where a door was added to a rear addition or kitchen remodel. Either way, the doors that come out now are usually aluminum or early vinyl sliders with worn tracks, fogged glass and a sill that has been taking water for years.
The common culprit is the deck. When the deck boards were built up to the level of the door track, snow and rain sit right against the sill and wick under it. When we replace the door we check the rim and subfloor, set a sill pan, and leave the gap and flashing the new door needs. Sometimes that means trimming a deck board or two back from the house.
In an older home the inside casing may have a back band or a profile you will not find at a lumberyard. We match it so the new door looks original to the room. Our job log has five window and door installs in St. Paul from April through July 2026, all for dealers and builders; homeowners in St. Paul, Shoreview and Minneapolis can hire us directly. 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 763-204-2099.
What you supply
- Your pick of slider or hinged door, material, color and glass
- Which side the moving or active panel should be on
- Photos of the door from both sides, the sill and the deck where it meets the house
- Paint or stain color if you want the new trim finished
What JMB supplies
- Measurement of the opening and the order for the new door and screen
- Removal and haul-away of the old door and trim
- Rim, subfloor and sill framing repair where it is soft
- Sill pan, flashing tape, foam and sealant, with clearance to the deck
- Rollers, lock and screen adjusted so the door glides and latches
- Inside casing matched to back-band or older profiles, or a standard casing
- A check with the City of St. Paul building department and the permit when one is needed
- Photos of the finished door 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:
- The door: vinyl, fiberglass or clad wood, slider or hinged
- Same-size replacement vs. a resized opening
- Rot in the rim or subfloor under the old sill
- Deck boards or a landing built up against the door
- Matching an older casing profile vs. a standard one
- Siding, brick or stucco around the outside
- Painting or staining, quoted as a separate line
Send the door from inside and out, the floor at the sill and a photo of where the deck meets the house.
How long it takes
One two-panel slider in a sound opening: most of a day. Sill and rim repair or a French door change adds time. The door is ordered after you approve 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
Postwar slider replacement
Same size, new frame and glass, the sill area rebuilt. Usually the simplest St. Paul patio door job.
Hinged French patio door
A pair of hinged doors in place of the slider, which suits many older homes. Needs swing room inside.
Walkout or ground-level door
A door at grade takes water from the yard as well as the roof. The sill and the grade outside get checked together.
Patio Door Replacement in St. Paul, MN — Slider or French Door: questions, answered
What does patio door replacement in St. Paul include?
The door itself, ordered to your opening, plus removal of the old one, sill and subfloor repair where it is soft, a sill pan and flashing, and trim inside and out. The quote lists the door, the install and any repair as separate lines.
Do St. Paul homes need a permit for a new patio door?
It depends on the work. Replacing a door in the same opening is often treated differently from widening it or changing the header. We check with the City of St. Paul building department for your door and pull the permit when one is needed.
Can the casing around a new patio door match the back-band trim in my older St. Paul home?
Yes. Back band is a second molding run around the outside edge of the casing, and it is what makes older St. Paul trim look the way it does. We build the new casing the same way so it reads as original. Painting or staining is quoted as its own line.
My deck is level with my patio door sill. Is that a problem?
Often, yes. Snow and rain sit against the sill and work under it, which is why the floor inside goes soft. When the door is replaced we set a sill pan and keep the flashing and clearance the door needs, which can mean cutting a deck board back from the house.
Should I choose a sliding or a hinged patio door?
A slider saves floor space and is the usual swap for an old slider. A hinged French door suits older homes and opens wider, but it needs clear room to swing. We go through both with you from the room photos before anything is ordered.
When does my old patio door come out?
Only after the new one is on site. Then the old door comes out, the sill is repaired and the new door goes in the same day in most cases. If hidden rot takes longer, the opening is closed and secured before we leave.
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.
Related jobs we do
Sliding Patio Door Replacement — Door Supplied, Set in a Pan, Trimmed
The slider drags, the glass fogs, and the floor inside the sill is dark. You pick the new door; we order it to fit, fix what is under the old one and set it so it glides.
Read moreFrench Patio Door Replacement — Hinged Pair Supplied, Set and Sealed
The old French doors leak at the sill, the pair no longer lines up in the middle, and one door has to be lifted to lock. We order a new pair to fit and set it right.
Read moreRotted Subfloor Under Patio Door — Floor, Rim and Sill Pan Repaired
The floor is soft in front of the sliding door, the flooring is buckled, or there is a stain on the basement rim below it. The door has been leaking into the floor.
Read moreWalkout Basement Door Replacement — Patio or Entry Door on a Slab
The walkout door is at grade, water from the patio runs toward it, and the carpet by the sill is damp. We replace the door and rebuild what it sits on so it stays dry.
Read moreSliding Door Glass Replacement — Foggy or Cracked Patio Door Glass
Your patio door glass is fogged between the panes, or a crack ran across it on its own. The frame is fine. You want the glass fixed, not a new door.
Read moreFront Entry Door Replacement in St. Paul, MN
A Victorian or 1920s front door is taller, heavier and older than anything on a store shelf. The replacement is ordered to the opening, and the trim stays true to the house.
Read morePage reviewed October 9, 2026 · JMB Builders LLC, MN license BC809005 · All by city pages
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