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Window Trim-Out, Drywall Returns & Jamb Extensions
The builder wrapped the windows in drywall, or the window company left them bare. We finish them: jamb extensions, casing, stools and aprons, or clean drywall returns — priced per opening, quoted from photos.
Reply within one business day. Or call / text 763-250-3621.
Most window trim requests come from the same two places: a new build where the windows were finished with bare drywall returns, and a replacement-window job where the installer did not do trim. Both are per-opening work that a window company will not touch and a handyman rarely gets straight.
Each page below is one situation. Read the one that matches, then send a wide shot of the room and a close-up of one window.
Get a written window trim quote
Not sure which page fits? Send three photos and a sentence here and we sort it out: a reply within one business day, or book a free in-home estimate. Or text the photos to 763-250-3621.
Window Trim jobs we do (31)
Casing styles (8)
Craftsman Window Trim — 1x4 Casing With a Header and Stool
Flat boards, square cuts, a header that stands proud of the legs. Craftsman trim is simple to look at and exact to build, and it suits a 1920s bungalow or a new farmhouse the same.
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Picture Frame Window Casing — Mitered Trim on All Four Sides
Four pieces, four miters, no ledge. Picture frame casing is the cleanest window trim there is, and the least forgiving, because every corner has to close and stay closed.
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Modern Farmhouse Window Trim — Wide Flat Casing With a Thick Head
Wide, plain, square-edged boards around the window with a head that reads thick and nothing fancy anywhere. The trim on most new farmhouse-style builds, put on straight and flush.
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Back Band Window Casing — Add a Back Band to Flat Casing
Your flat window casing looks thin against the baseboard and the doors. A back band around the outside edge makes it read as heavy, built-up trim without tearing anything off the wall.
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Replace Painted Trim With Stained Wood — Stain-Grade Window Casing
The kitchen has oak cabinets and the windows have painted trim, or the new windows came with stained frames inside white casing. We swap the trim to stain-grade wood that matches.
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Cabin Window Trim — Cedar and Pine Casing for Log Walls
New windows in a log wall, or pine walls in a cabin with the windows still bare. We trim them in wood that fits the place and fasten it so the logs can keep moving.
Read the pageNo-Trim Windows — Drywall Wrapped Openings Done Right
Windows without trim, done the way the magazine photo makes it look: square openings, corners that stay sharp, a hairline joint at the frame and no caulk bead to yellow.
Read the pageWindow Returns With Drywall or Wood Casing? We Do Both
Your builder wrapped the windows in drywall. Keep the clean look and have the returns rebuilt right, or add wood jambs and casing — here is how to decide. We do both.
Read the pageSills, stools and jambs (5)
Window Sill Trim — Stool and Apron Installation & Replacement
A window with no ledge, or a ledge that is split, swollen or painted into a lump — we install and replace window stools and aprons so there is a real sill to set things on.
Read the pageJamb Extensions for Windows — Installation & Casing
The window frame stops short of the wall and there is nothing to nail casing to. Extension jambs fix that — sized to your wall, set straight, reveal even, cased the same day.
Read the pageWindow Sill Over the Kitchen Sink — Deep, Water-Resistant Stool
The ledge behind the faucet is swollen, the paint is peeling at the corners and the caulk line has gone black. We pull it and put in a sill that can get wet.
Read the pageBathroom Window Trim for Moisture — PVC Stool, Jambs and Casing
The wood trim around the bathroom window is peeling and soft, or there is a window in the shower with nothing but drywall around it. We trim it in PVC that can be wet every day.
Read the pageMullion Trim Between Windows — Mull Covers for Twin Units
Two windows set side by side with a strip of foam or bare framing showing between them. We cover the mull and trim the pair as one window.
Read the pageSpecial windows (10)
Arched Window Trim — Casing and Jambs for Round Top Windows
The window company set the arch and stopped. The straight legs are easy; the curve is where most trim jobs fall apart, and it is the part you look at every day.
Read the pageBay Window Trim Interior — Seat Board, Head Board and Jambs
A bay window has more angles in it than the rest of the room put together. We cut the seat board, head board and covers to fit them instead of caulking the gaps.
Read the pageBasement Window Trim-Out — Half-Below-Grade & Egress Windows
Thick foundation walls, a sill that sweats every winter, an egress unit sitting in a window well — basement windows need trim built for a basement, not copied from upstairs.
Read the pageEgress Window Trim — Finish the Inside of an Egress Window
The well is dug, the concrete is cut, the window is in. Inside, you have a foot-deep hole with foam and bare lumber. We finish it so it looks like part of the room.
Read the pageCorner Window Trim — Casing Two Windows That Meet at a Corner
Two windows meet at the corner of the room and there is nothing between them but a post. The trim has to wrap that corner and make both windows read as one, and it is easy to get wrong.
Read the pageGarden Window Trim Interior — Casing, Jambs and the Shelf Sill
The garden window is in, but the box meets the wall with a gap and the bottom shelf is bare plywood or swollen from watering. We finish the opening and put in a shelf that takes water.
Read the pageSkylight Trim Interior — Finishing the Light Shaft in Drywall or Wood
The roofer set the skylight and left a hole in the ceiling, or the old shaft is stained and cracking at the corners. We frame, insulate and finish the shaft so it reads like part of the room.
Read the pageTransom Window Trim & Sidelight Casing at the Entry Door
The new entry unit came with sidelites and a transom, and the installer cased the door and quit. We finish the whole opening as one frame, both sides of the wall.
Read the pageThree Season Porch Window Trim — Pine or PVC, Priced Per Window
The porch windows went in and the inside is bare framing, foam and drywall edges all the way around the room. We trim every window in one or two days, in a material that can take the temperature swings.
Read the pageReplace a Glass Block Window With One That Opens
Glass block lets light in and nothing else: no air, no view, no way out. We take it out of the foundation and put in a basement window that slides or tilts open.
Read the pageAfter new windows or siding (3)
Trim After Insert Window Installation — Casing Fit to the New Reveal
The new casements went into the old frames, and now there is a step, a strip of foam and an old jamb that does not meet the new window. We fit the trim to what is actually there.
Read the pageWindow Company Didn't Do Trim? We Finish Replacement Windows
The new windows are in and they look great from outside. Inside there is foam, a gap and no trim, and the window company says that was not part of the job. It is part of ours.
Read the pageExterior Window Trim After New Siding Replacement
The siding is done, the windows are sitting in a thin strip of J-channel, and the house still looks unfinished. We trim them out in boards that shed water and last.
Read the pageRepairs (5)
Cracked Drywall Return Window Repair: Corner Bead, Stains & More
A split corner, a chipped edge, a brown stain at the bottom of the return, or a window the drywaller never came back to finish — we fix it square and leave it ready for paint.
Read the pageRotted Window Sill Inside? Stool Replacement and What the Rot Means
The paint on the ledge has bubbled, the wood underneath is soft enough to push a screwdriver into, and there is black along the joint to the window. We find out how far it goes and fix it.
Read the pageWindow Casing Repair After Blinds Removed — Holes Filled or Replaced
The blinds came down and every window has a row of screw holes, a chipped edge where the bracket was pried off, or a chunk of casing missing. The house is listing next month or the unit turns over Friday.
Read the pageWindow Trim Water Damage Repair — Casing, Stool and Apron Replaced
The paint on the window trim is bubbling, the bottom of the casing has swelled into a lump, and there is a brown line on the apron. The leak is fixed or about to be. Now the trim needs to be replaced, not painted over.
Read the pageCasement Window Crank Replacement — Operators, Hinges and Locks
The crank turns and nothing happens, or the sash opens but will not come back far enough for the lock to catch. The window is fine. The hardware is worn, and it can be replaced.
Read the pageOther kinds of work
- Window Replacement & Installation
- Door Replacement & Installation
- Install What You Bought — By Brand & Store
- Whole-House Window & Door Projects
- Insurance & Storm Damage Repairs
- Finish & Trim Carpentry
- Exterior Trim, Rot Repair & Drip Caps
- Siding
- Roofing
- Built-Ins, Mudroom Lockers & Shelving
- Drywall Repair & Finishing
- Painting & Staining
- Flooring
- Tile Installation
- Insulation
- Hardscapes & Pavers
- Landscaping
- Excavation & Site Work
- Pole Barns & Metal Buildings
- TV Mounting
- Security Cameras & Doorbells
- Aging-in-Place Carpentry
- Window & Door Services by City
- Finish Carpentry by City
- Landlords & Property Managers
- Apartment & Multifamily Window and Door Projects
- For Builders & Window Companies
Where we work
Window trim near you
Based in Zimmerman, scheduling across the Twin Cities metro. Closest first: