How to Install Window Trim

Here's a tip - rather than tacking it all down, tack it once and leave it a bit loose. Then, when you're installing the second board you will have wiggle room to adjust it, rather than having to adjust your saw and make additional cuts. Once both boards fit, tack the first one fully and move on to the next board leaving the second one a bit loose, and so forth.

Setting your miter saw to a back cut of 1-2 degrees makes sure your 45 degree cuts are nice and tight. You do have to change the way you cut your angles though, always being aware of the way the blade is tilted. Once you've caught onto it, it makes your miters perfect.

I watched 5 of they and this one is the best. I just did my entire home using this method and job came out great.

This video was a lifesaver! I've struggled with putting window and door casing for DIY projects for a long time. The 3/16" marks with the square was the best! Followed that trick and it worked out perfectly. Thanks.

I agree with Buddy. I've watch several of these vids for putting trim around windows. I have an older house and the basement windows are not square. I think the method outlined in this vid is going to be my best bet!

Love this video! Years of experience packed into 3 minutes. Thank you so much.

Watched this video just a handful of times and slowly but surely, I was able to put together a beautiful window in several hours. The initial cuts are relatively simple, and if you take your time and ensure that the final cut is perfect, you'll have yourself a glorious lil' window when you're done! I'm sure the next one won't take as long, I'm just meticulous.

It took a while to find this video. It is great. I followed it to trim 2 windows this morning. The process was easy to follow and the results were great. Thanks for making and sharing this video.

This was a very good tutorial. I followed along and my trim is just about perfect.

Thanks for your help for us neewbies. Can I add after doing it a second time we found it immensley helpful to put a level on the first piece before nailing, and on each of the others. It made the other cuts easier and tighter.

Best advice I’ve seen yet

Great video. Really explains proper method to install trim

Awesome video. I had never really done this before and my miters came out perfect. My house is old and the framing surrounding the window iwas not perfectly square. That is why the 45 degree comment below may not be relevant for every scenario. Mine were definitley not all 45 degrees and if you forced them to that the reveals would look off.

Oh, my head. But you teach and work so well !

This method worked like a charm for me.

Well first time doing this and it turned out awesome because of your easy instructions thanks so much 🛠 keep up the great videos 🛠

This guy knows his stuff! A+++++

very informative and easy to follow. Makes it look so easy.

This is the correct way. But I would nail the top and side pieces on the jamb. Then Nail the top corners to the wall so they stay nice and flush. The bottom piece is easy. You could just cut it to the same length as the top one, but in this case just make sure the jambs are pointing 90° put the trim upside down against the 45° corners of the side trim and mark the trim Yu need to cut. Go to the miter saw and cut the pieces 45° inwards and you are done. The piece should now fit snug and flush against the side pieces. And because the side trim is not nailed to the wall you do have a few degrees of play on either side to press it against the miters. If you end up with a tiny gap, just fill it with paint and wipe with paper. To hide it, fill the nailheads while you're at it. 😊

Thank you for sharing