Patching Plaster Around Windows

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Today we are back talking about our windows. I know I hope one day soon be can be done with them too, I just keep telling myself how nice they will look when we are done. But last week I told you how we added window jamb extensions to our windows. Here is a picture to remind you.

Install Window Jamb

Did you notice the plaster below the window sill? Or what about the plaster in this window?

Install Window Sill

I think we should maybe fix that, right? So before we added the window trim, I had to patch the plaster around the windows.


-Sheetrock All Purpose Joint Compound (Sheetrock Mud)
-6″ Taping Knife

Plaster Supplies

I placed the Sheetrock mud on the hawk used the 6″ taping knife. I completed this for all the windows and let it dry for 24 hour. After that amount of time the windows looked like this.

Plaster First Coat

See the crack? I then applied the mud one more time and again let it dry for 24 hours. You may have to apply another coat of mud to make the wall level, I did not worry too much because I am covering this part with wood.

Plaster Second Coat

After the Sheetrock had dried, I took a #400 sandpaper and sanded the area.


After Sanding

Now our windows are ready for the trim.

Plaster DoneDoes anyone else need to patch some plaster holes?

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  1. I’m confused, do you have plaster walls that you repaired using drywall? Or are the original walls drywall as well? I have plaster walls and some holes to repair and am wondering if the original plaster can be matched, or if drywall is the way to go.

    1. Sorry to confuse you but we have plaster walls that are against brick. We used Sheetrock mud to patch the wall because it is similar to plaster and I did not want to mix anything. You just need to add the Sheetrock mud in layers to give you a smooth finish. If your holes are not very big, you can always use spackling paste. Here is also another way on how to repair plaster from This Old House.

      1. Thanks for the clarification. I have traditional plaster on lath in my 1927 house. Stucco on brick I understand, but don’t have experience with the plaster on brick. I use real plaster to patch small holes, but I’ve got a much larger hole that needs to be addressed and don’t know if drywall is sometimes used in those kinds of repairs or not. So will just have to talk to someone who knows what my options are

        Anyway, I forgot to say that you’ve got a lot of nice projects on your blog and I came over because of your faux subway tile project that was posted on Hometalk. Thought that was pretty brilliant and well executed. Thanks again!

        1. Good luck with figuring that one out, wish you the best! Thank you for stopping by my blog and I’m glad you liked my subway tile project because I am loving the look.

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