Workshop Build #27: Trimming the workshop windows

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Blog entry by ~Julie~ posted 02-28-2012 06:13 PM 7738 reads 1 time favorited 7 comments Add to Favorites Watch
« Part 26: Finishing the Siding Part 27 of Workshop Build series Part 28: Trimming the workshop windows part 2 »

I haven’t posted here in a long time, and finally I’m getting around to finishing my interior windows. On and off over the past few months I’ve been working on them. The front room windows had already been done by me a couple years ago. This is the south side, and where I enter my shop.

I chose pine to trim the windows with because it’s my favourite and the shop cupboards and router table I made are pine.The vinyl clad windows were inserted from the outside and nailed into place through their flanges which are now under the siding. They were also screwed into the framing from the sides to keep them firmly in place.

This is what they looked like from the inside, before being finished. There are three windows along the east side of the building.

Here is one of the sad looking windows, unfinished:

The first thing to do is make the jambs, this is the wood that fills in the framed area, not the part that sits on the wall, but perpendicular to it. These windows are made with a groove that holds the jamb so that the wood fits into it… who knew?

The great part about having a planer is that you can make your wood exactly the thickness you need it. I planed mine down to about 3/4” thick so that it would fit perfectly in the grooves the window had built in.

This is how the sill will fit into the groove when it’s finished:

I decided on having a sill that extended past the outside of the window trim or casing by 1”. Because of this, the sill piece has to be cut to fit into the groove as well as on the wall. You can see it here at the bottom:

Here’s a close up, the window casing is 3 1/4” wide, so the “finger” on the sill extending out has to go past where the casing will sit by 1”. It also is wider than the side and top jamb pieces, to allow the side casings to sit on it.

I also used the same trim style on my interior window which I blogged about earlier:

The side jambs will sit between the top and bottom pieces, of course everything has to measured precisely.

The previous photos show a trial fit with unfinished wood. Since I was trimming three windows and two doorways, I had a lot of pieces to cut and finish. I coated all pieces with five coats of wipe-on polyurethane.

I’ll post the finished project tomorrow or the next day… have to get back to the shop…

-- ~Julie~

7 comments so far

View MayflowerDescendant's profile


414 posts in 2988 days

#1 posted 02-28-2012 06:45 PM


Great work! Projects like this really “dresses” up the shop / gives it the finished look. I’m sure it fills you with pride everytime you knock a project like this off your list. Nice touch on that extending “finger” / lip. Bravo!!

-- Glen - Vancouver, British Columbia, Canada

View w8n4simplertimes's profile


37 posts in 3592 days

#2 posted 02-28-2012 08:58 PM

Very nice. Keep posting about your progress.

View stefang's profile


16133 posts in 3535 days

#3 posted 02-28-2012 10:06 PM

Looks real good Julie. Are you intending to put some insulation around those widow frames?

-- Mike, an American living in Norway.

View jumbojack's profile


1685 posts in 2825 days

#4 posted 02-28-2012 10:34 PM

Julie buy a couple cans of expanding foam. The void there will spit cold/hot air. When we replaced the windows in our 1950s house we sealed all the voids with foam and what a difference it makes.

-- Made in America, with American made tools....Shopsmith

View Ken Fitzpatrick's profile

Ken Fitzpatrick

376 posts in 4225 days

#5 posted 02-29-2012 05:14 AM

Nice work Julie. Been working on my shop for a year now and still haven’t trimmed my new windows. Thanks for reminding me that I have to finish mine. You are doing a great job. Please post more as you finish.

-- • "I have noticed that nothing I have never said ever did me any harm."....... Calvin Coolidge

View canadianchips's profile


2613 posts in 3198 days

#6 posted 03-01-2012 05:03 PM

Windows have changed, that groove is nice feature when building out jambs.
Just a “Reminder.” When using foam to seal up the cracks, there is a specific foam for doors and windows. The regular expanding foam WILL bow out your nice work !

-- "My mission in life - make everyone smile !"

View ~Julie~'s profile


610 posts in 3236 days

#7 posted 03-01-2012 05:08 PM

Thanks for the comments, I will post the second part in a few minutes.

I didn’t use foam, but pink insulation. My experience with foam is that it (as canadianships says) expands too much for a job like this.

Ken – go finish your windows!!!

-- ~Julie~

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