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.
Cabin window trim is cedar or pine casing, rough sawn or smooth, fitted to log or tongue-and-groove walls that move. JMB Builders trims cabin and log home windows across the Twin Cities metro and north toward St. Cloud, with jambs scribed to the logs, a settling gap above the head, and trim nailed to the window buck rather than across the logs. Priced per window, quoted from your photos within one business day.
- Priced per window, jambs, casing and stool
- Cedar or pine, rough sawn or smooth
- Quote from photos in 1 business day
- Licensed MN contractor BC809005
Trimming a window in a cabin is a different job from trimming one in a drywalled house, for two reasons. The first is the look: cedar, knotty pine or rough sawn stock instead of primed finger-joint, with the casing sized to the scale of the logs or the tongue-and-groove boards. The second is movement. A log wall settles for years as the logs dry, and a window set in it sits in a buck with a gap above the head so the logs can come down without landing on the window. Trim nailed across that gap, or nailed to the logs on one side and the buck on the other, splits or pulls loose the first winter.
So the trim is fastened to the buck and the window only, the head casing is built with a slip joint or a settling space behind it that is stuffed with insulation and covered, and the side casings are scribed to the profile of the logs where they land on them. On a stick-framed cabin with pine board walls there is no settling to worry about, but the trim still has to scribe to boards that are never perfectly flat, and it has to be a species and finish that reads right against them.
JMB Builders trims cabin and log home windows across the Twin Cities metro and the north and central metro toward St. Cloud. Cedar, knotty pine, or rough sawn stock in whatever the walls are, with a stout stool, jambs to the wall depth and a head detail that allows for settling. Staining or a clear finish is quoted as a separate line, or finish it yourself.
What you supply
- A photo of one window from inside showing the wall around it, and a close-up of the gap between the window and the wall
- Whether the walls are full logs, half-log siding on a framed wall, or tongue-and-groove pine over framing
- The look you want: rough sawn cedar, smooth knotty pine, or something to match trim already in the cabin
- Your stain or clear finish if we are finishing it; finishing is quoted as a separate line, or do it yourself
- How far the cabin is and whether it is reachable in the season you want the work done
What JMB supplies
- Cedar or pine casing, rough sawn or S4S, sized to the scale of the walls
- Jamb extensions in the same species, scribed to the log or board profile
- A thick stool with horns and an apron, or a flat sill board when the cabin's other trim is plain
- Head casing with a settling gap or slip joint on log walls, insulated and covered
- Fastening to the window buck and the window only on log walls, never across the logs
- Foam or fiberglass in the gaps behind the trim, and a flexible sealant where the trim meets the logs
- Photos of the finished window in your job folder
- Staining or clear finish when you want it done, quoted as its own line
How it is priced: per window
Quoted in writing from your photos within one business day. What moves the number:
- Full log walls with settling gaps vs. framed walls with log siding or pine boards
- Scribing the trim to round logs vs. landing on flat boards
- Rough sawn cedar vs. smooth knotty pine vs. a species matched to existing trim
- Stool and apron vs. a plain sill board
- Windows in a vaulted gable end that take a ladder or staging
- Distance from Zimmerman and how many windows are done in one trip
- Whether the exterior side of the same windows needs trim too
Tell us the wall type and send one close-up of the gap at the head of a window. On a log wall that gap is what we build the head detail around.
How long it takes
Framed cabin walls: two to four windows in a day. Log walls with scribing and a settling head: two to three windows in a day. A whole cabin over two or three days, usually done in one trip.
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 quote within one business day. We only come out to measure first when the job needs a tape measure — no pressure, no games.
- 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
Rough sawn cedar casing
Flat cedar boards with the saw marks left on, butt-jointed with a header over the top, a thick stool below. Reads right against logs and against rough pine paneling. Left natural or given a clear coat.
Smooth knotty pine casing
The match for tongue-and-groove pine walls. Flat pine casing with eased edges, a pine stool and apron, sanded and ready for the same clear finish or stain as the walls so the trim and the paneling age together.
Log wall head detail with settling gap
The head casing is fastened to the window buck, not the logs above, with insulation stuffed in the settling space behind it and a slip joint or a loose-fitted cover board above. The logs come down over the years and the trim stays put.
Match the cabin's existing trim
An addition or a few replacement windows in a cabin that already has trim. We match the species, the profile and the finish so the new windows do not stand out from the old ones. Send a photo of an existing window.
Cabin Window Trim — Cedar and Pine Casing for Log Walls: questions, answered
What kind of wood should I use for window trim in a cabin?
Whatever the walls are, or a species that sits well next to them. Knotty pine is the usual match for tongue-and-groove pine walls. Cedar, rough sawn or smooth, suits log walls and reads more rustic. Both take a clear finish or a light stain and both are soft enough to scribe easily to a log. Fir and oak show up in older cabins and can be matched when that is what is already there.
Why does window trim on a log home need a settling gap?
Because the logs shrink as they dry and the wall gets shorter over several years. Windows are set in a buck with a space above the head so the logs can come down without pressing on the window. If the head casing is nailed to the logs and the window, it either splits or pushes the window out of square as the wall settles. The trim above the window is built to slide, fastened only to the buck and the window, with the gap insulated and covered.
Can you trim windows in a cabin that has log siding on a framed wall?
Yes, and it is simpler. Log siding on a stick-framed wall does not settle, so the trim is fastened normally. What still has to happen is scribing: the casing lands on the curved face of the log siding and has to be cut to that profile so there is no gap behind it. That takes more time than trimming to a flat wall but there is no settling detail to build.
How do you trim a window in tongue-and-groove pine walls?
The boards usually run to the edge of the window opening, or stop short with a strip of framing showing. We add jamb extensions in pine to the wall depth, then flat pine casing over the joint between the jambs and the boards, scribed where a board is proud. A pine stool with horns and an apron finishes the bottom. The whole thing gets the same clear finish as the walls so it disappears into them.
Should cabin window trim be stained or left natural?
Either, but it should be sealed. Bare pine and cedar yellow and pick up dirt at the stool where hands and cups land. A clear water-based finish keeps the color light; an oil-based clear warms it; a light stain matches trim that has already aged. We install the trim sanded and ready, and the finish is quoted as its own line on the quote, or you can do it yourself over a weekend.
How far north will you go for a cabin job?
We are based in Zimmerman and work the Twin Cities metro and the north and central metro out toward St. Cloud. Cabins inside that area are normal work. Further than that, send the photos and the location anyway; whether it works depends on the size of the job and whether we can do it in one trip, and we tell you straight.
Get a written quote for this job
Three photos and a sentence is enough. You hear back within one business day. Or text the photos to 763-204-2099.
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Read morePage reviewed September 24, 2026 · JMB Builders LLC, MN license BC809005 · All window trim pages
Where we work
Window trim near you
Based in Zimmerman, scheduling across the Twin Cities metro. Closest first: