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Easy Wall Repairs for Large and Small Holes

Using the 3M High Strength Large Hole Repair Kit and Small Hole Repair All-in-One Applicator


DISCLAIMER: This post is sponsored by 3M.

I’m working on my final bathroom renovation in our Hawaii home, and–as with most renovation projects–I have plenty of holes to repair in the walls.

I had 4 small sets of holes after removing the old towel bar and toilet paper holder. The 3M High Strength Small Hole All-in-One Applicator is perfect for filling in small holes like this! No need to find a putty knife, sander, or spackle…this small product has it all!


Step 1 – Scrape off any excess pieces, so you have a fairly flat surface to work with. You can use the “trowel” or “putty knife”  end of the All-in-One Applicator to do this!


Step 2 – Wipe off any dust, and then squirt a dab of spackle onto the holes. Use the flat side again to smooth out and feather the edges.

Step 3 – Allow it to dry fully, and then use the sander on the cap to sand the area.


For the larger hole created by the doorknob, I used the 3M High Strength Large Hole Repair Kit. 

The Large Hole Repair Kit comes with a backer plate to provide support to the spackle. To make it a little easier to insert the plate, I cut a square slightly larger than the original hole. 

Step 1 – Clean up the edges of the hole. The backer plate is attached with an adhesive, so you will want a dust-free surface to adhere it to.

Step 2 – Peel the paper off the adhesive strips, and put the backer plate behind the drywall.

Step 3 – Use the center pull tabs to pull the backer plate against the drywall. This will help the adhesive stick to the drywall. Once it is secure, you can push the pull tabs back into the center hole.

Step 4 – Cut the adhesive mesh piece to fit over the small opening in the backer plate. Then remove the back to expose the adhesive side and place it over the hole. 

Step 5 –  Use the included plastic putty knife to apply the spackling. Fill the whole area flush with the existing wall. 

Step 6 – Dip the putty knife in water and use it to smooth the surface and feather the edges.

Step 7 – Let the area dry overnight, and then sand with the included sanding sponge. If you have any areas that need to be touched up, a second light coat can be applied and then sanded flush once dry.

And that’s it! My walls look brand new! 


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