How to Make Window Sills & Apron | Woodworking

How to Make Window Sills & Apron | Woodworking

Window sills can add character to the look and feel of a space. Follow Scott through the steps of building custom interior window sills to see how a window sill is designed and installed.

Update: since publishing this video, I learned about a router bit for profiling the edge of window sills, which is easier. Here’s a link to the router bit – https://amzn.to/2DhNl51
🇨🇦 Canadian link – https://amzn.to/3nlDcKL

In this project, you will see how to build a custom window sill and apron (the trim below the windowsill) from standard lumber and trim. The steps include:
• checking for spacing
• buying material (5/4 or 1 1/4 inch thick boards)
• cutting the new windowsill to it’s rough dimensions
• fitting the window sill to the wall
• determining the length of the horns on the window sill
• adding edge details to create a pleasing profile
• building an apron to install under the window sill
• gluing up the returns of the apron trim for detail on the ends
• trimming the apron
• installing the apron

Once the window sills (technically called window stools) and aprons were installed, the nail holes were patched and the parts were painted with no-VOC semi gloss paint.

Fireplace mantel plans – https://woodenitbenice.ca/collections/woodworking-plans
Other woodworking plans – https://woodenitbenice.ca/collections/woodworking-plans

Our 1-on-1 woodworking advice sessions – https://woodenitbenice.ca/collections/woodworking-advice-sessions

See the tools we use in our workshop and the tools we recommend: https://www.amazon.com/shop/homeimprovementwoodworking
🇨🇦 Canadian link – https://www.amazon.ca/shop/homeimprovementwoodworking

For more woodworking knowledge or to contact us directly, visit our website https://WoodenItBeNice.ca Hosted by Scott Bennett, owner of Wooden It Be Nice in Brooklin, Ontario, Canada

This description contains affiliate links, which provide our channel with funds for producing more videos for our viewers.

#windowsill #window #trim

50 Comments

  1. scott yd on May 16, 2022 at 4:24 pm

    That’s awesome



  2. jtxl on May 16, 2022 at 4:25 pm

    I need some ideas on a flush mount window similar to the cover photo. I have 3 tall windows together that I would like to frame so I wont need a valance. My problem is that there is nowhere to hide the hardware for blinds.



  3. Fortunes Frank on May 16, 2022 at 4:26 pm

    Sir, I have a quick question. If I want to cut some window sill edge by one side, in order to fit some bookshelf. Without removing the sill, which tools you recommend for doing this job.



  4. Dave Parker on May 16, 2022 at 4:27 pm

    Or you could buy a window sill edge bit.



  5. Joe Madrid on May 16, 2022 at 4:27 pm

    Looks great. This gentleman is skilled no doubt. I just would rather keep things simple and still make it look great and professional. Cutting the returns and then gluing them on works best for me. Also, using the table saw to cut a profile on a piece of trim is risky business. Keep it simple and use a router, I say. But if you have a few extra fingers to spare, go for it 🙂 You still got your toes.



  6. Val Flores on May 16, 2022 at 4:30 pm

    What did you use to glue on the apron?



  7. TheOddOne2 on May 16, 2022 at 4:30 pm

    Excellent video, well explained, edited and top craftmanship



  8. Joseph Justus on May 16, 2022 at 4:32 pm

    Thank you for that no nonsense video. It was very helpful and clear.👍🏼



  9. Alvaro Solano on May 16, 2022 at 4:35 pm

    Thank u for sharing your excellent finishing skills I’m very impressed 🌟



  10. Kari Crooks on May 16, 2022 at 4:40 pm

    What kind of wood are you using?



  11. jfarinacci0329 on May 16, 2022 at 4:43 pm

    Really good work. Thank you.



  12. B rollin 2 fly B rollin2 fly on May 16, 2022 at 4:45 pm

    Thanks again



  13. Jon Dunn on May 16, 2022 at 4:49 pm

    Stellar job- Enjoyed the jazz music and also I would recommend using a custom router bit with a 1/2 inch shaft instead of the cross cutting table saw technique as you said very dangerous.
    Also just go with the profile that YOU prefer– why question the generic opinions: if steered that way we’d never have electric cars!



  14. Jayne Simmons on May 16, 2022 at 4:50 pm

    awsome



  15. Vonnie G on May 16, 2022 at 4:50 pm

    Love me some window sills. The after looks great!



  16. N Holt on May 16, 2022 at 4:51 pm

    @4:58 omg that looks dangerous.



  17. Elton Carvalho on May 16, 2022 at 4:51 pm

    Awesome



  18. David Croft on May 16, 2022 at 4:55 pm

    Great job. Excellent tutorial. Thank you.



  19. Bababooey 126 on May 16, 2022 at 4:55 pm

    I listen to your videos when I go to sleep and I have nice dreams.



  20. Peter O on May 16, 2022 at 4:55 pm

    Very nice details..



  21. ncooty on May 16, 2022 at 4:58 pm

    I think the technical terms for those pieces are _stool_ and apron.



  22. bobbg on May 16, 2022 at 5:00 pm

    Not bad, think td have turned the apron upside down and looked at it i also like the deeper sil perfect for a 4" potted plant. Ive seen a box like crown over the top too that makes a nice ledg to decorate.

    My wife’s pissed I won’t let her hang pictures. I spent too much time fixing a lousy sheet rock job. I can only imagine what the framing looks like behind it.



  23. Kenneth Dailey on May 16, 2022 at 5:00 pm

    Can someone explain how the horn length was determined? I’m having a hard time understanding it with the way it was explained in the video. For example, why did he move 3.75 inches out from the outer edge of the jamb extension to obtain the length of the horn?



  24. Mark Langkamp on May 16, 2022 at 5:01 pm

    Nice!



  25. Mike Hogan on May 16, 2022 at 5:02 pm

    Nice work, and a very informative video. I particularly like the attention and respect you give, when answering questions.



  26. Norton Newmann on May 16, 2022 at 5:03 pm

    I had a carpenter show me years ago how to cut trim returns. He "back-cut" the pieces, which was hit or miss on those very small end caps. Then he glued/tacked them onto the ends of the trim. I like your method much better for accuracy and precision – takes a little longer, but I think it gives a much cleaner look.



  27. Aaron C on May 16, 2022 at 5:04 pm

    That’s amazing man. You’ve given me and I’m sure many others tons of ideas with your video here. I am newish to woodworking and can’t thank you enough for this one video. Keep up the good work my man. Liked and subbed



  28. Abrishami Knight on May 16, 2022 at 5:04 pm

    very nice video … I just wish that perhaps there was another angle I could’ve seen another angle of how you used the table saw with the clamps at 4:45.



  29. Robert Livingstone on May 16, 2022 at 5:05 pm

    Great video and great job



  30. Dennis B on May 16, 2022 at 5:06 pm

    Nice work looks real good



  31. Mike Justice on May 16, 2022 at 5:07 pm

    Window sills are outside
    Window stools are inside



  32. Jonas Gabriel on May 16, 2022 at 5:07 pm

    Perfect job ! U are amazing !



  33. William Curry on May 16, 2022 at 5:08 pm

    A lot of wasted time. Good luck making money.



  34. greencase on May 16, 2022 at 5:09 pm

    Good God, you look ecstatic to be alive.



  35. broderp on May 16, 2022 at 5:10 pm

    As a professional, why don’t you use safeties and guards on your equipment (table saw) or any PPE when working? You state this is not a safety video, yet know your audience contains DIY people looking for advise. You don’t set a good example. Great work though.



  36. john doe on May 16, 2022 at 5:11 pm

    You know you can buy a router bit for getting the right profile on your sill.



  37. Eddy E on May 16, 2022 at 5:12 pm

    Nice



  38. JRCme1 on May 16, 2022 at 5:12 pm

    I realized I got hypnotized by watching you brush glue on wood!



  39. Dana Owen on May 16, 2022 at 5:13 pm

    The window sills look so much better. Great eye for detail.



  40. Michael Meister on May 16, 2022 at 5:14 pm

    Beautiful work.



  41. Yoshi0 on May 16, 2022 at 5:14 pm

    I did this and ended up with gap between stool’s horn and wall edges (of course the tools I used were tape measure and multitool only), but caulked the gaps and said “good enough” lol although not perfect it still looked pretty good considering the lack of better tools. Great video and very clever way to make the profile!



  42. funnyharleyman on May 16, 2022 at 5:14 pm

    What kind of wood are you using? Thanks, Garry.



  43. Sandra Arendt on May 16, 2022 at 5:14 pm

    Hi! Could you let us know what paint type and application technique you used on this trim? Also, is there a video on building your dovetail joint box? Beautiful work. THANK YOU for sharing your decision making thoughts as you do your projects.



  44. bcask61 on May 16, 2022 at 5:15 pm

    Nice work. I’m stealing your hack for making the apron returns.



  45. Retired at 49 on May 16, 2022 at 5:16 pm

    That trick with the table saw was amazing. Thank you!



  46. George Konstantino on May 16, 2022 at 5:16 pm

    I have never sen a true woodworker work like this



  47. alberto deleon on May 16, 2022 at 5:18 pm

    You have a beautiful talent..thank you for sharing. Enjoyed this.



  48. Max Federle on May 16, 2022 at 5:19 pm

    Wow I wish I had watched this yesterday. I built my first 2 stools with aprons and then trimmed out the rest of the windows. Some of these tips would have saved me so much time!



  49. Joseph Justus on May 16, 2022 at 5:22 pm

    Thanks for that no nonsense info! 👍🏼



  50. Home and Garden DIY on May 16, 2022 at 5:22 pm

    So calm, and so helpful! New sub here. I read in one of the comments that you were having a tough time when you made this video. I hope things have gotten better for you. You’re certainly making things better for those of us who find your videos. Thank you!!