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PostPosted: Wed May 30, 2018 8:24 am 
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I have two small holes to fill in a plasterboard ceiling

First hole I made a mistake in placement of one of my downlights (57mm holesaw) so it fouled on a junction box screwed to the joist above :roll: I wasn't able to get tools inside the hole to move the junction box so I ended up expanding the hole slightly with a plasterboard saw and now the light is fitted, but the hole is now too big, so I need to fill the gap on one side of the hole in a little (probably around 2-3cm)

Second hole the plasterer was being "helpful" and made a hole and pulled cables through, where he thought I would like a downlight, approx size of 2p piece. I wasn't present when the ceiling was plastered otherwise I would've asked him not to bother .. you live and learn.

Behind the plasterboard is just the ceiling void, I was thinking maybe some expanding foam would do the trick? And then a bit of filler/sanding on top to finish. Online the typical advice is to cut the hole into a square and insert a piece of timber, then attach square of plasterboard to it, then fill the gaps, but I was thinking maybe I can get away with less? It would work for hole #2 but #1 im not sure about how to handle

Any advice greatly appreciated!


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PostPosted: Wed May 30, 2018 10:10 am 
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What you need is a fixed backer above the hole to give something for the filler to stick to. Find a lolly stick or something that will fit through and attach some string to the middle. Smear it in glue and push it through and pull the string down to stick it in place. Give it time to cure and cut the string off. Make up a stodgy mix of filler, not too much water, and fill the hole. Give it time to dry out before sanding back and painting.

DWD

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PostPosted: Mon Jun 04, 2018 11:14 pm 
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Just to report back I cut some scrap 3mm plywood with my jigsaw into lollypop-stick shape sections and slotted these through the hole with adhesive on

Had to fill the holes twice but after a quick hand sand and a paint the repair is invisible

Thanks for pointing me in the right direction!



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PostPosted: Tue Jun 05, 2018 12:09 am 
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Well done, thanks for the update :thumbright:

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