Patio Door Replacement in Burnsville, MN
The walkout slider in your Burnsville lower level sits a few inches above the patio slab, and every spring the carpet in front of it is damp.
Reply within one business day. Or call / text 763-250-3621.
Patio door replacement in Burnsville MN is often the lower-level walkout door on a hillside lot: a slider at grade where snow drifts against it, meltwater runs toward it, and the sill has gone soft. JMB Builders measures the opening, orders the door, repairs the sill, sets it in a sill pan with flashing, and sorts out how water leaves the slab. 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
- Walkout doors at grade and deck doors above
- Slab and drainage checked at the threshold
Burnsville's hilly lots gave the 1960s–80s builders two patio doors per house: one off the dining room onto a deck, and one in the walkout below, opening onto a patio slab cut into the hill. The walkout door is the one that fails first. It sits at grade, so snow that slides off the deck above piles against it, the slab has settled and now pitches toward the house, and meltwater sits at the threshold until it finds the subfloor. The slider itself is usually an original aluminum or early vinyl unit with worn rollers and a lock that does not pull tight.
We take the old door out and look at the whole threshold: subfloor, rim joist, the sill plate on the foundation, and the slab outside. Soft wood is replaced. If the slab pitches in, we talk about it before the door goes in, because a new door on a wet threshold does not stay new. Then a sill pan goes down, flashing is lapped at the sides and head, and the new door is set level and square, foamed, and sealed to the siding or the block.
The deck door upstairs can go on the same order and the same trip, in the same frame color, and the two are quoted as separate lines. Burnsville is a full-day trip from Zimmerman and the door is on site before the old one comes out. Our job records show 1 install in Burnsville, Sep 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 patio steps are
- Photos of the door from inside and out, the threshold up close, and the slab in front of it after a rain if you can
What JMB supplies
- In-person measure and the door order through ABC Supply, with options such as MI Windows, ProVia or Therma-Tru
- Old door and trim removed and hauled away
- Subfloor, rim and sill-plate repair under the threshold as found
- Sill pan, flashing tape, low-expansion foam and exterior sealant to siding or block
- Frame set level and square; rollers, lock and screen adjusted
- A note on the slab pitch and drainage at the estimate, with a fix quoted if it needs one
- Interior casing and exterior trim, 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 number of panels
- Frame material and glass package
- Rot in the subfloor, rim or sill plate once the old door is out
- Slab or drainage work at the threshold, quoted on its own
- A deck door upstairs on the same order, its own line
- Exterior trim against siding or foundation block
- Interior trim painting, quoted separately
Send photos of the door, the threshold and the slab outside. If the slab is wet after rain, a photo of that tells us most of what we need.
How long it takes
One walkout door: most of a day on site in a sound opening; sill and rim repair adds hours. Two doors on one trip: a long day to a day and a half. 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 at grade
The usual replacement for a walkout door. Insulated frame, low-E glass, and a sill that drains out. Pick a line with an adjustable lock and good rollers for a door that gets daily use.
Fiberglass slider with a taller threshold
A stiffer frame and a threshold that stands higher above the slab, for a door where snow piles and meltwater sits. Takes a dark color on a sunny walkout wall.
Hinged patio door
A single hinged door with a fixed panel, or a French pair, where you want a compression seal at grade. Needs swing room on the patio or inside.
Patio Door Replacement in Burnsville, MN: questions, answered
Why is the floor in front of my walkout patio door wet every spring?
Snow piles against a door at grade, the slab often pitches toward the house after years of settling, and meltwater sits at the threshold. An old slider has no sill pan, so the water goes under the track and into the subfloor. A new door on a sill pan sends that water back out, and if the slab pitches in we tell you and quote a fix.
Can you replace the walkout door and the deck door above it on the same trip?
Yes. Both are measured at one estimate, ordered together in the same frame color, and installed on one full-day trip as separate lines on the quote. The walkout door is usually first, since it is the one with the sill repair.
What is a sill pan and why does a walkout door need one?
A sill pan is a tray under the door sill that catches water getting past the track and drains it outside instead of into the floor. A door sitting a few inches above a patio slab sees more water than any other door in the house, which is why every patio door we set has one.
Do I need a permit to replace a patio door in Burnsville?
The City of Burnsville 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.
Should the new walkout door sit higher above the slab?
If snow and water are the problem, often yes. A door with a taller threshold, or the opening rebuilt a little higher with a step inside, keeps the track out of the melt. Both change the opening and are quoted as options, with the plain same-size swap beside them.
How long is the lower level open during the swap?
A few hours. The old door stays in until the new one is on site and the sill is ready, the swap itself is done the same day, and the opening is sealed before the crew leaves. Floors inside are covered from the door to the stairs.
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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