How to Repair a Large Crack in Plaster
1 Material
$75-90
4 Days
Medium
In preparation for redoing out upstairs playroom, I repaired a large crack in our plaster (we’re in an old home).
When Repairing a Crack in Plaster you can essentially thinkof this task as being broken down into two parts.
1. Securing Loose Plaster
2. Finishing the Repair.
For this project, I used a product called *Big Wally’sPlaster Magic* and I finished almost as if I would if I were repairing drywall. (maybe some helpful info for that too.)
I made a video and had great fun working with my 8year old daughter Eva (again). (http://www.youtube.com/watch?v=SaEqGJHUyr0) You can find out more about the back story by viewing our site.
One Additional Note: when working with older plaster walls lead & even asbestos is of course a possibility. be safe and work cautiously.
Thanks and hope it helps. ~jb
How to Repair a Large Crack in Plaster
Using Big Wally's Plaster Magic.
Start by Drilling 5/16" holes 1 or 2 inches from the crack and about 3 inches apart. Use a Masonry Bit.
Apply adhesive using a caulk gun squirting into holes and cleaning up with a sponge. Tip: cut only the tip of the tub off.
Installing plaster washers using a 2" inch drywall screws into some of the holes.
Let dry overnight and remove washers.
Using a 4" drywall knife, fill the crack and holes.
Use a mixable powdered drywall compound. Many actually contain plaster and will shrink less.
Install a Crackstop Mesh over the entire affected area.
Skim Coat and Sand Lightly. 2 coats are recommended.
clean and prime.
{
"id": "1553",
"alt": "Video :: Complete Instruction for Repairing a Large Crack in a Plaster Wall.",
"title": "Video :: Complete Instruction for Repairing a Large Crack in a Plaster Wall.",
"video_link": "https://www.youtube.com/embed/SaEqGJHUyr0",
"youtube_video_id": "SaEqGJHUyr0"
}
{
"width": 634,
"height": 357,
"showRelated": true
}
Want more details about this and other DIY projects? Check out my blog post!
Comments
Join the conversation
2 of 16 comments
-
Yes I willl Try, I have a large wall that termites got into, the plaster is off it. Would I use this method to fix my wall? Where can I get the big Wally? Thanks for any help.
-
If it's failing that's different. Knockout all the loose plaster and fill hole with a piece of drywall, tape and mud. Whatever the person is doing in the article is nuts.
Frequently asked questions
Have a question about this project?
what is the point of drilling holes either side
Hi. Can anyone advise if this is a plaster crack please?
Well done sir, pls can I use reinforcements bar to repair crack in wall