The PB will take it IF you spread the load enough 61/2kg is not a huge load.
The problem with plasterboard is that the localised strength is not good
enough for rawlplug/butterfly or any other sort of attachment.
You need to remove the section of plasterboard and put e.g. a sheet of
MDF behind it and put it back, and either attach the MDF to the studs or
glue it to the back of the board. Or in fact you can use a thin sheet of
MDF to replace the board itself, and skim over it.
Certainly sounds like you have 'Strawboard' from the posts I see you
mentioned the builders they are the same group that built the houses we
worked on in the NW.
The board as i wrote earlier is aprox 2 1/2 " thick and came in 6x3 6x2 and
8x3 sheets if I recall.
It was fixed with 2x2 wooden battons nailed into the roof & floor with
uprights slotted into the board edges.
All the people we kept in touch with have ripped it out and restudded due to
its lack of fixing strength and as you say expanding when wet.
Might I sujest you consider hanging your tv from wire fixed to the roof
joists or as has been already said screw straight through into the stair
If you batton the rear you may find (as a customer did when fixing a shelf
this way) that over a period the whole thing slips down the wall leaving a
In truth strawboard was and still is a very bad building medium and was only
used because it was cheep.
Thanks for the input. I have decided to drill straight through and stick
(No Nails type stuff) a lump of 4" x 2" timber on the other side and use 4"
No. 12 screws so I get a good 1 1/4" into the timber. It is inside an
airing cupboard and mostly hidden by the copper tank and hopefully the No
Nails approach will stop it 'sliding' down the wall Although at 6.5Kg I
don't think it will.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.