Basement window is above the floor joist

Question Icon
Posted by: from Markham
7/15/2013 at 8:12:11 PM

Can you guys share some ideas on how to finish the walls in situations where basement window is slightly above the floor joists? (maybe by 2 - 3 inches.)

See the picture.

basement window is above the floor joist
User Icon
Michael from Only Bathrooms in Vaughan
Date/Time7/15/2013 at 9:29:46 PM

This is quite common and the only thing you can do is frame above and beside the window and drywall it. It will be a raised boxed area - sorry I don't have any pics of a finished one. Looks like you will have no room for trim so just drywall it to the window frame and use a small moulding (quarter round or cove).


User Icon
Date/Time7/16/2013 at 12:21:55 AM


You build the tunnel across the beams and create a box around the window to reach the "tunnel", as you can see in the attached picture.


Harry C.

Basement window is above the floor joist
User Icon
Date/Time7/16/2013 at 8:38:55 AM


This is a common problem that we usually encounter with older homes. My personal opinion is to frame an area from the last joist over to the top of the window box. This area should be dry walled, and finished accordingly.

With the remainder of the window area, due to the depth of which it will be, I would create and install a pine jam.

Once installed, prime it, and paint it white (if this is the colour of your remaining trim). You will then be able to install casing to the bottom, and sides, which will add definition to the area once complete.

Unfortunately, I do not have any pictures of such window areas, yet I have attached a basement window picture to demonstrate the finishing technique I have mentioned.

I hope this assists you with your project.

Basement window is above the floor joist
User Icon
Date/Time7/16/2013 at 9:45:05 AM

I am trying to load the picture.

Harry C.

Basement window is above the floor joist
User Icon
Date/Time7/16/2013 at 4:39:08 PM

Well, I can only echo everyone else. Attached is a pic of my variation of the same theme.

Basement window is above the floor joist
User Icon
Payam in Markham
Date/Time7/16/2013 at 10:13:54 PM

Thank you all. All replies were helpful.

I know what to do now. The drywall finish should look like what Brett has posted. These pictures are very clear.

Thanks for your time again.

User Icon
Date/Time7/17/2013 at 6:03:34 PM

Just like the previous postings, however, I prefer to slope the drywall from the top of the window framing to the bottom of the floor joists. Just a different look.



User Icon
John from JALS Corporation in Welland
Date/Time7/17/2013 at 6:30:51 PM

You would have to box in the upper area between the floor joist which will allow you to finish the room.

Search the TrustedPros directory and discover the best contractors in your area.

Find your home service pro
Great renovations start with a great contractor.

Since 2004, TrustedPros has been helping homeowners find the right contractor for their home improvements and repairs.

Post Your Project

Within hours you'll be comparing offers from top-rated professionals. It's free to post and you're under no obligation to hire.

Trustedpros Inc. does not warrant the accuracy, completeness, safety, legality or usefulness of any Content, or Whether Content is Current and up-to-date, and TrustedPros Inc. Shall have no liability whatsoever with respect to your use or reliance upon any content or for content being removed or otherwise ceasing to be available. Please refer to the terms and conditions of use of this websites for more details.

It appears you may be located in the US

TrustedPros is designed to deliver results targeted to your location.

Get Free Estimates

Post your project and compare offers from top-rated pros.