Filling big holes in plasterboard
Scot Hindley, Associate painter and Decorator in Cheshire had a good experience with Gyproc Plasterboard Patches, for filling big holes in plasterboard.
Here are some big holes in plasterboard.
There are a few ways to tackle this, but Scot had some of these patches.
As Scot explains
Inside the packet you get a number of self adhesive patches that cover all sizes of holes. I used the patches in conjunction with Gyproc Easifill as a two coat system.
And this is the end result.
Scot’s original article is on his blog, where he demonstrates how he is steadily decorating Cheshire homes to a very high standard.
Traditional way to fill holes?
Traditional and plasterboard don’t really fit in the same sentence, but this is one tried and tested dry waller approach to repairs in broken walls.
Thread a piece of string through the gauze.
Push the gauze through the hole. Make sure the gauze covers the hole, because that will provide the backing for the filler; pull firmly on the string so the gauze is pinned against the back of the sound plasterboard.
To hold the gauze in place, use the string and a pencil as a brace.
Use a thick stodgy filler in stages, before skimming and smoothing off.
The technique is shown here on a Homeserve video.
Note that whilst it does show clearly how to fill a large hole, it doesn’t show how to prevent a hairline crack re-appearing around the edge of the repair, if the filler shrinks. (Obviously a doorstop is in order to stop a handle repeatedly knocking against the repair!)
It’s all in the details!
Annoying hairline cracks that keep reappearing? That is where the Toupret Elafib cotton scrim would come into its own.
ie Paint a 2″ band of vinyl matt paint around the edge of the repair and bed the scrim in it. When dry skim and sand (with a Mirka sander block attached to your vacuum. Still available from Hallmark Fraulo £33.07 incl of VAT and delivery)
The reason the stick-on patches Scot used are so convenient, is that you would cut the patch to extend over the hole, so the vulnerable edge is covered and reinforced in one hit! Once skimmed over, the filler and board underneath can do whatever it likes, the surface filler should not crack.
Same technique as gauze, except with plasterboard off-cuts
I have searched high and low and cannot see a video or images of the technique I picked up after a week of doing nothing but walking around a hotel repairing gaping holes in plasterboard walls. Good old electricians had lost their cables and literally loafed around the building with claw hammers smashing holes, looking for clues!
Instead of gauze, you use a piece of plasterboard cut a couple of inches bigger than the hole
Instead of string, drive a 2″ flat head nail through the patch piece.
Put a big dollop of filler on the face of the replacement piece, about an inch or so all round the edge. You are going to make a sandwich!
Fernagle the replacement patch through the hole (on the angle). With a good hold on the pointy end of the nail, line the patch piece up so it is covering the back of the hole, and then pull firmly on the nail till the filler squidges and the edges of the patch bed tight onto the back of the sound plasterboard. The suction and grip of the filler will keep the new piece in place til dry.
When the filler has dried off, carefully push the nail back into the void and start building up the layers with filler. (If you are repairing 1/2″ plasterboard, you could bed a 3/8″ piece of board in the gap to get the layer built up quickly. When the hole is filled flush, reinforce the joints with scrim and then overfill and sand down with your dustless sander.
Either way, Scot has long finished by now with his self adhesive Gyproc patches!
Any other ways of repairing smashed plasterboard? Please share them here.
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