3M High Strength Large Hole Repair Kit, Includes Fiber Reinforced Spackling Compound (12 oz.), Repair Plate, Putty Knife and Sanding Sponge, For Easy Wall Repair, No Shrinking or Cracking (LHR-KIT)

Works well. The compound is light and thick. It goes on easily.

Love it! Works for both inside and outside walls

It filled the hole in my wall, was very easy to use, and it came with everything I needed to do the job

My son tripped and fell and his knee went into the wall. Since he made the hole I had him help me fix the hole. We ordeed this kit and followed the instructions. The only obstacles we ran into along the way was the adhesive on the grid was not strong enough to attach to the inside of the wall. We ended up using super glue and that worked. Once we got the grid attached it took a little trial and error but we got the mud to stick to the grid and start to build up so we could bring it flush with the wall. We did one coat and let that dry overnight. In the morning we sanded it and did a little bit more touching up. In the evening we sanded again and then painted. In the final picture the paint is still a little bit wet. Since this is at the bottom of the wall in a low traffic area of the house, we didn't bother to add texture. I don't think anyone will notice. I would recommend this kit. If a mom and her 13-year-old can do it then I think anyone can.

I had to patch a ~4" hole in a concrete ceiling (skim coated, no actual dry wall paneling). For a hole this big, I probably should have made a plug out of scrap drywall, but instead, I tried to fill it in slowly by building up layers with joint compound. That was a beginner's mistake; It took way too long to build up and drips out before it dries.The compound in this repair kit has a lot of embedded fibers, which makes it more like clay than regular compound. I couldn't use the plastic backer from the kit, but it stuck well enough onto another metal plate I installed and had no worries about it falling out. It also hardened without cracking or shrinking noticeably. I opted to make the patch slightly concave and went over again with regular joint compound, just to ensure the surface texture was consistent. After sanding and painting, I totally can't figure out where the hole used to be.Very easy to use for someone with no experience, and the result was basically equivalent to what I would have expected from a contractor. Only downside was cost; Maybe not worth it for real pros, but makes sense for DIYers.

Product might be a bit pricey when compared to other methods, but it works very well. I've done it with wall cement and rugular old dry-wall patches before. This is is way quicker if you don't have time to figure all that put.A kid could patch a wall with this kit. Highly recommend if you're not very handy but still want to do it yourself.

It was too small for the odd-shaped electrical wiring hole in the ceiling. What can I say, there are better solutions for holes not made by your doorknob, for goodness sakes. Better yet, put in a spring loaded door stop.

This item is just like most items that require being glued to something. It Must be clean, sheetrock is extremely dust so very little would ever stick to it. The backing board has 2 pieces of 2 sided tape toapply to the sheetrock backside for strength. When you have the hole the size needed use a damp rag andlightly clean the edges and backside. Allow to dry overnight then take duct tape and roll a piece into a ballplace it into the hole so the remaining dust now sticks to the tape. Use a couple of pieces just to make sure it's clean then lightly do the same thing to the edges. I then placed scotch tape around the edge of sheetrock so dust wouldn't get on my backing board. Carefully install the backing board and remove the scotch tape before you apply pressure to the backing plate. I then used part of the mud around the wall edges and pulled the backing board into place and held tightly as instructed. Be sure not to let any of the mud get on the area where the 2 sided tape needs to stick. Then follow the rest of the instructions as directed and Not Applying to much pressure when adding the mud to backing board. Drying time is crucial for strength of the sheetrock mud. Sand and recoat in low areas allowing time to dry completely.