I was replacing a bathroom fan and the new bathroom fan is bigger than the old one. I took out the old one. Then I used a pencil and traced around the new fan. Then I used a reciprocating saw for the first time and got a little crazy with it. Now the hole is slightly too big and when I put the grill cover on the fan, I can see the hole. I'm not sure what to do now. I still got old pieces of the ceiling. Maybe I can do something with it?
Cut out enough of the ceiling to put small pieces of plywood behind the old drywall. Put the plywood behind it and screw a few screws through the old drywall and plywood so you can screw a new piece of drywall to it. Basically just using it as a backer-board. Then you have to put fiber tape or mesh tape over the seam and spackle it and feather it out so it isn't noticeable. Then sand it down and re-paint. It sounds like alot of work, but its 3 work hours at the most if you have quick drying spackle.
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It sounds like when you put the fan in you can see holes around it. If that is correct then get some cardboard and wrap around the fan two or three times around the fan where it fits through the hole. So later when it is removed it give the correct gap around the fan fit to the hole.Now you should be able to secure the fan in place but not up tight to the roof, so you can still get plaster into the gap. Then get some plaster filler. you can get it from hardware store. And with a scraper that is used for plaster fill the gap. Let it dry. You then take the fan out and then remove the cardboard and discard. With the cardboard out their should be just the right amount of gap for the fan to fit back in snuggle and perfect. Use just enough cardboard as you think will do the job. The plaster also sticks to the card board and not the fan housing. You can also rap some Glad Wrap around the cardboard on the out side and it will pull away from the plaster easier when it is dry.Then sand, then you may need that repair with the fiber netting that sticks to it, to strengthen the around the hole. ( buy from hardware. just ask them and they will know. ) stick some of that on to strengthen it and put more plaster on. Let dry, sand and paint. If you google wall plastering repairs you should be able to get some demonstration on how to repair walls with holes so it will show you how to use the mesh to repair. It is not really very difficult. Good luck.
This Site Might Help You. RE: I cut a hole in ceiling too big, how to fix it? I was replacing a bathroom fan and the new bathroom fan is bigger than the old one. I took out the old one. Then I used a pencil and traced around the new fan. Then I used a reciprocating saw for the first time and got a little crazy with it. Now the hole is slightly too big and when I put the...
I saw this fiberglass or plaster designer piece that you can put up in a situation where the opening is now too big for the fixture. It hides the mistakes of the uninitiated. I think Mark is under the impression that you just want to close the hole.
