Patio Door Replacement in Mound, MN
The patio door facing the lake on your Mound house has soft jambs, a sill that sags, and a smell you noticed last spring.
Reply within one business day. Or call / text 763-250-3621.
Patio door replacement in Mound MN usually starts with what is under the old door: a lake-facing slider with rotted jamb feet, a soft sill, and wet framing below. JMB Builders opens the wall at the estimate, quotes the framing repair with the door, then rebuilds the opening and sets the new door in a sill pan with flashing. 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
- Rotted jambs, sill and framing repaired first
- Lake-side flashing and sealant done right
On a Mound house the patio door almost always faces the lake, because that is the view. It is also the wall that takes the sun, the wind and the spray, so the door wears out from the bottom up: finish gone from the jamb feet, the sill soft, the track holding water, and the subfloor and rim joist under it going the same way. On a cottage addition the framing under the door may be light to begin with. By the time the glass fogs or the rollers fail, the real problem is already in the wall.
That is why our estimate on a Mound patio door includes opening up the suspect spots. We pull the interior casing or a piece of exterior trim, probe the jamb feet and the sill, and look at the rim and subfloor. What we find goes on the quote next to the door: sistered joists, a new section of rim, a new subfloor patch, a jamb-foot repair or a full reframe of the opening. You see the whole job before you say yes.
On install day the repair happens first, then the sill pan goes down, flashing is lapped at the sides and head and tied to the housewrap, and the new door is set level and square, foamed and sealed. A stiff fiberglass or clad-wood frame holds up on the lake wall, and a stained wood interior can match cottage trim. Mound is a full-day trip from Zimmerman. Our job records show 2 installs in Mound, 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, interior finish and glass
- Which panel slides, or let us suggest it from the deck and the view
- Access to the crawl space or basement under the door, if there is one
- Photos of the door inside and out, the jamb feet and sill up close, and the wall below it from outside
What JMB supplies
- An estimate that opens up the jamb feet and sill so the repair is on the quote with the door
- The door order through ABC Supply, with options such as ProVia, MI Windows or Therma-Tru
- Old door, trim and rotted framing removed and hauled away
- Rim, subfloor, jamb feet and sill framing rebuilt as quoted
- Sill pan, flashing tape tied to the housewrap, low-expansion foam and exterior sealant
- Frame set level and square; rollers, lock and screen adjusted
- Interior casing in paint or stain grade and exterior trim to suit the siding, 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:
- How far the rot has gone: jamb feet only, sill and subfloor, or rim and framing
- Slider vs. hinged door, and the number of panels
- Frame material and glass package for the lake-facing wall
- A stained wood interior to match cottage trim
- Exterior trim repair on the lake side
- Deck height and access on the lake side
- Painting or staining, quoted as a separate line
Send photos of the door, a close-up of each jamb foot and the sill, and the wall below the door from outside. The free in-home estimate includes opening up the suspect spots.
How long it takes
A door with jamb-foot repair: a full day on site. Rim and subfloor work can add a second day. The repair is done before the door goes in. 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
Fiberglass slider, lake side
A stiff frame that does not swell or rot, holds a dark color in full sun, and seals against wind off the water. Low-E glass that keeps the view clear.
Clad-wood slider or French door
A wood interior to stain and match cottage trim, with a clad exterior that takes the weather. The usual pick when the room's millwork matters.
Vinyl slider
The lower-cost option, fine on a sheltered lake wall or a bedroom door. Pick a line with an adjustable lock and a sill that drains out.
Patio Door Replacement in Mound, MN: questions, answered
How do I know if the framing under my patio door is rotted?
Press a screwdriver into the jamb a few inches above the sill and into the sill itself near the ends. If it sinks in, the rot is there, and the subfloor and rim under it usually are too. A floor that feels soft just inside the door, or a musty smell in spring, says the same. We open those spots up at the estimate so the quote covers it.
Will you quote the framing repair before you start?
Yes. The estimate includes opening up the jamb feet and the sill, and the repair goes on the quote beside the door as its own lines. If more shows up once the door is out, we photograph it, tell you what it needs and quote it before going further.
Why does the lake-side door rot while the other doors are fine?
That wall gets sun, wind and spray that the road side never sees. Finish fails first, water gets behind the sill and into the jamb feet, and from there into the floor. Most of these doors were set without a sill pan, so there was nothing to catch it.
Do I need a permit to replace a patio door in Mound?
The City of Mound building department sets that rule, and framing repair under the door or a change to the opening size is what usually brings a permit into it. We check for your address and pull a permit when one is needed.
Can the new door have a wood interior to match my cottage trim?
Yes. A clad-wood slider or French door has a wood interior you can stain to match, with a clad exterior that takes the lake weather. A fiberglass door with a woodgrain interior is another way to get there. Both are on the quote if you want to compare.
How long does a patio door with framing repair take in Mound?
A full day on site for a door with jamb-foot and sill repair; rim and subfloor work can run into a second day. The repair is done and dry before the new door is set, and the opening is sealed before the crew leaves. It is scheduled as a full-day trip from Zimmerman.
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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