Patio Door Replacement in Hanover, MN
When the rain comes sideways across Hanover from the west, water shows up on the floor inside your patio door.
Reply within one business day. Or call / text 763-250-3621.
Patio door replacement in Hanover MN is usually a west-facing slider on a 1990s-or-newer home that lets wind-driven rain past the track and cold under the sill when the weather comes across the fields. JMB Builders measures, orders the door you choose, repairs the wet subfloor, sets the new door in a sill pan with lapped 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
- Sill pan and lapped flashing for driven rain
- Wet subfloor under the old sill repaired as found
Hanover's open western exposure means a patio door on the back or side of a 1990s-or-newer home often faces the weather head-on. A slider is the leakiest door in the house by design: water that gets past the panel lands in the track and is supposed to drain out through weep holes. When the weeps clog and the weatherstrip flattens, wind-driven rain pushes over the track and onto the floor, and the subfloor under the sill goes soft.
Replacing the door fixes the track; flashing the opening fixes the leak. The old door comes out, the subfloor and rim under the sill are opened up and any soft wood replaced, a sill pan with an upturned back leg goes down the full width, and flashing tape laps the jambs over the pan and the head over the jambs so water has nowhere to go but out. The new frame is set level and square, shimmed, foamed and sealed, and the rollers, lock and screen are adjusted.
On a west wall we suggest a slider with a stiff frame and an adjustable lock, or a hinged French door, which seals by compression and holds up better in steady wind. Painting of new interior trim is quoted as a separate line — or leave it primed and caulked and paint it yourself. St. Michael, Rogers and Albertville are next door, so scheduling is easy.
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
- Your choice of slider or French patio door, frame material, color and glass
- Which panel slides, or let us suggest it from where the steps land
- Photos of the door inside and out, the sill up close, and the floor just inside after a rain if you have one
What JMB supplies
- In-person measure and the door order through ABC Supply, screen included
- Removal and haul-away of the old slider and trim
- Subfloor and rim repair under the sill as found
- Sill pan with a back leg, lapped flashing tape, low-expansion foam and exterior sealant
- Frame set level and square; rollers, lock and screen adjusted
- Interior casing and exterior trim to suit the siding
- 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 French door
- Frame material and glass package for a wind-facing wall
- How much subfloor and rim under the sill has rotted
- Deck height, stairs and staging at the door
- Same-size replacement vs. resizing the opening
- Exterior trim around vinyl or lap siding
- Interior trim painting, quoted separately
How long it takes
One patio door: most of a day on site in a sound opening. Subfloor repair under a leaking sill can add half a day. 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 with a stiff frame
The common replacement. On a west wall pick a line with a reinforced meeting rail, good weatherstrip and an adjustable lock so the panel pulls tight.
Fiberglass slider
Stiffer than vinyl, holds a dark color in the afternoon sun, and flexes less in a gust, which keeps the panel seated against the weatherstrip.
French patio doors
A hinged pair that seals by compression on all sides, the tightest option against steady wind. Needs swing room inside or on the deck.
Patio Door Replacement in Hanover, MN: questions, answered
Why does rain come in under my patio door when the wind is from the west?
A slider drains through weep holes in the track. When those clog and the weatherstrip flattens, wind pushes water over the track and onto the floor. If the original door had no sill pan, that water also soaks the subfloor. A new door on a sill pan with lapped flashing sends it back outside.
Will the new patio door leak too in a west wind?
Not if the opening is flashed right. The sill pan catches anything that gets past the track and the flashing laps so water runs out, not in. The door itself is set level so the panel seals evenly against the weatherstrip and the lock pulls it tight. A French door is tighter still if you have room for the swing.
Is the floor under my patio door rotten?
If it feels soft or the finish flooring has lifted near the door, probably. We find out when the old door is out, cut back to sound wood, replace the subfloor and any rim framing, and show you photos before the new door goes in.
Do I need a permit to replace a patio door in Hanover?
The City of Hanover building department sets that rule, and widening the opening or changing framing can change the answer. We check with the city for your address and pull a permit when one is required.
Slider or French doors for a windy wall?
French doors seal by compression and hold up best in steady wind, but they need floor or deck space to swing. A slider with a stiff frame, an adjustable lock and good weatherstrip is the next best and takes no swing room. We look at the space and tell you which fits.
Do you also replace patio doors in St. Michael and Rogers?
Yes. Hanover sits between St. Michael, Rogers and Albertville on our regular routes. Send photos of the door and we reply within one business day.
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 25, 2026 · JMB Builders LLC, MN license BC809005 · All by city pages
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