In an earlier contribution to this discussion,
antgel wrote:

Ok, kitchen electrics are nearly done, and I'm giving thought to
making good. I note two main methods for patching plasterboard.

1. Cut a piece of board larger than hole in one direction. Screw a
screw in the middle. Apply adhesive to larger ends, put through hole,
pull towards self with screw, allow to dry, fill in gap with plaster.

2. Screw battens to either side of hole. Cut a piece of board roughly
hole size. Screw said piece to battens. Make good round the edges
with plaster.

Any pros / cons to these two methods? I can see that 1 means more
plaster needed to cover, and 2 is more of a pain. Will finish look
the same either way?

Why not use a combination? Start with method 1 and when stuck, remove the
screw and stick another hole-sized piece of plasterboard on top of the first
piece. This will then only need to be skimmed.


What's the smallest hole that can be filled with plaster without
patching the board?


How small do you want - 1mm? Or do you mean "what is the *largest* . . "?

I wouldn't want to try to fill anything bigger than about 1/2" without
putting something behind it. But, using your Method 1, you *could* (say)
fill a hole left by removing an electrical socket. Even then, I would try to
fill the hole with a piece of board to cut down on the amount of plaster or
filler required.
--
Cheers,
Set Square
______
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antgel wrote:

Ok, kitchen electrics are nearly done, and I'm giving thought to
making good. I note two main methods for patching plasterboard.

1. Cut a piece of board larger than hole in one direction. Screw a
screw in the middle. Apply adhesive to larger ends, put through hole,
pull towards self with screw, allow to dry, fill in gap with plaster.

2. Screw battens to either side of hole. Cut a piece of board roughly
hole size. Screw said piece to battens. Make good round the edges
with plaster.

Any pros / cons to these two methods? I can see that 1 means more
plaster needed to cover, and 2 is more of a pain. Will finish look
the same either way?

What's the smallest hole that can be filled with plaster without
patching the board?

Antony

If there is a junction behind. It's worth making a cover that can be
easily removed.

--
--
zaax

In article , antgel
writes
Ok, kitchen electrics are nearly done, and I'm giving thought to making
good. I note two main methods for patching plasterboard.

1. Cut a piece of board larger than hole in one direction. Screw a
screw in the middle. Apply adhesive to larger ends, put through hole,
pull towards self with screw, allow to dry, fill in gap with plaster.

2. Screw battens to either side of hole. Cut a piece of board roughly
hole size. Screw said piece to battens. Make good round the edges with
plaster.

Any pros / cons to these two methods? I can see that 1 means more
plaster needed to cover, and 2 is more of a pain. Will finish look the
same either way?

I've just done a number 2 ? and found it to be far more secure, it was
where something substantial was to be fixed so that was quite important.
It's really easy to get a matching hole & patch it you cut the patch first
then overlay this to the board and mark/cut around it.
--
fred

In article , "antgel"
says...
Ok, kitchen electrics are nearly done, and I'm giving thought to making
good. I note two main methods for patching plasterboard.

1. Cut a piece of board larger than hole in one direction. Screw a
screw in the middle. Apply adhesive to larger ends, put through hole,
pull towards self with screw, allow to dry, fill in gap with plaster.

You can actually cut it a bit larger in both directions as long as
there's room to slide it in on the diagonal. Then stick another bit
on top and fill the gaps.