How to fix 30mm hole in plasterboard?

GB

unread,

Mar 3, 2022, 4:38:10 PM3/3/22

to

How to fix 30mm hole in plasterboard?

It's too small to poke a piece of wood through and screw into that
through the plasterboard.

I tried some scrunched up newspaper, but it just drops down.

Any clever ideas, please?

John Rumm

unread,

Mar 3, 2022, 9:18:42 PM3/3/22

to

Cut your hole slightly larger with straight edges cut on a bevel (PB saw
or a multitool will do it. Then cut a plug the same size with matching
bevelled edges. Apply adhesive/filler around the edge, an put the plug
in place. Set the final level either slightly low and then fill over, or
set flush with a straight edge and just fill the small gap.

Like this:

http://wiki.diyfaq.org.uk/index.php/Patching_plasterboard#How_to_-_Using_a_bevel_edged_hole_and_matching_plug

--
Cheers,

John.

/=================================================================\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\=================================================================/

Colin Bignell

unread,

Mar 4, 2022, 4:09:08 AM3/4/22

to

On 03/03/2022 21:38, GB wrote:

> How to fix 30mm hole in plasterboard?
>
> It's too small to poke a piece of wood through and screw into that
> through the plasterboard.

Make the hole bigger? Perhaps a rectangular shape, so that you can
insert a piece of wood, held by a screw through its centre, turn it once
through the hole, and then screw into it through the plasterboard.

> I tried some scrunched up newspaper, but it just drops down.
>
> Any clever ideas, please?

Cut a repair piece to fit the hole, squirt in expanding foam, then hold
the repair piece in place as the foam tries to escape from the hole? The
foam ought to expand sideways instead and also hold the repair piece in
place.

--
Colin Bignell

Andrew

unread,

Mar 4, 2022, 4:37:35 AM3/4/22

to

On 04/03/2022 02:18, John Rumm wrote:
> On 03/03/2022 21:38, GB wrote:
>> How to fix 30mm hole in plasterboard?
>>
>> It's too small to poke a piece of wood through and screw into that
>> through the plasterboard.
>>
>> I tried some scrunched up newspaper, but it just drops down.
>>
>> Any clever ideas, please?
>
> Cut your hole slightly larger with straight edges cut on a bevel (PB saw
> or a multitool will do it. Then cut a plug the same size with matching
> bevelled edges. Apply adhesive/filler around the edge, an put the plug
> in place. Set the final level either slightly low and then fill over, or
> set flush with a straight edge and just fill the small gap.
>
> Like this:
>
> http://wiki.diyfaq.org.uk/index.php/Patching_plasterboard#How_to_-_Using_a_bevel_edged_hole_and_matching_plug
>
>
>

For a ceiling he should cut the bevel the other way. The bevelled insert
piece will fit through the square hole at 45 degrees and will then just
sit (snugly) into place under the influence of gravity. Put a line of
nonails around the edge of the insert and make a small hole in the
centre with a piece of knotted string to gently pull it down to spread
the nonails.

John Rumm

unread,

Mar 4, 2022, 6:25:40 AM3/4/22

to

Probably ok if you temporarily stick a dry lining screw into the plug so
that you have a handle on it.

GB

unread,

Mar 4, 2022, 11:32:08 AM3/4/22

to

On 04/03/2022 09:08, Colin Bignell wrote:
> On 03/03/2022 21:38, GB wrote:
>> How to fix 30mm hole in plasterboard?
>>
>> It's too small to poke a piece of wood through and screw into that
>> through the plasterboard.
>
> Make the hole bigger? Perhaps a rectangular shape, so that you can
> insert a piece of wood, held by a screw through its centre, turn it once
> through the hole, and then screw into it through the plasterboard.

It seemed all wrong to make a small hole big, but this worked very
nicely, thanks. :)

F Murtz

unread,

Mar 5, 2022, 6:38:27 AM3/5/22

to

cut a longer narrow piece of plasterboard ,screw a long screw into
centre of it slop some plaster on it and insert at an angle through hole
and pull back against back of wall, it will dry and you can fill with
small piece

Colin Bignell

unread,

Mar 5, 2022, 11:26:48 AM3/5/22

to

On 04/03/2022 16:32, GB wrote:
> On 04/03/2022 09:08, Colin Bignell wrote:
>> On 03/03/2022 21:38, GB wrote:
>>> How to fix 30mm hole in plasterboard?
>>>
>>> It's too small to poke a piece of wood through and screw into that
>>> through the plasterboard.
>>
>> Make the hole bigger? Perhaps a rectangular shape, so that you can
>> insert a piece of wood, held by a screw through its centre, turn it
>> once through the hole, and then screw into it through the plasterboard.
>
> It seemed all wrong to make a small hole big, but this worked very
> nicely, thanks. :)

Glad one of my random thoughts proved useful.

--
Colin Bignell

Animal

unread,

Mar 5, 2022, 12:32:13 PM3/5/22

to

...and send us pics of the damage.

Colin Bignell

unread,

Mar 5, 2022, 6:50:11 PM3/5/22

to

Expanding foam only causes damage if it is prevented from expanding,
which shouldn't be a problem in a plasterboard wall or ceiling.

--
Colin Bignell

Andy Bennet

unread,

Mar 6, 2022, 2:46:25 AM3/6/22

to

On 03/03/2022 21:38, GB wrote:

Drill a 40mm hole over the top?

Dave Plowman (News)

unread,

Mar 6, 2022, 8:40:13 AM3/6/22

to

In article <NYHUJ.55678$41E7...@fx37.iad>,

Yup. But might be easier to enlarge the hole to a square. Making cutting
the infill patch easier.

--
*Acupuncture is a jab well done*

Dave Plowman da...@davenoise.co.uk London SW
To e-mail, change noise into sound.