Conservatory host wall plasterboard

[Tristar]

I have a 5.5m x 3.0m plasterboarded host wall in my conservatory which has a 1.0m vertical crack between a joint, from the top to the corner of the access door. The crack appears when cold, and disappears when the temperature is warmer, as with most conservatories, the temp. varies widely. The board is dabbed to the brick host wall.

The installer's plasterer, who appears very knowledgeable, has attempted to repair the crack three times, the last attempt involved injecting a low expansion adhesive in appropriately placed holes either side of the crack in an attempt to stop the board moving. This has not worked, and the only solution now appears to be to remove the board from the whole wall and either plaster the wall, or re-board it, with the attendant likelihood of the cracks re-appearing elsewhere. Given the disruption this will incur, I would prefer to find a simpler solution.

I have considered cutting out a section including the crack and fitting a 6" section of board, which would then include 2 rather than 1 joint, thus any expansion or contraction gap being less noticeable, but I would welcome any useful alternative ideas.

 

[dcdec]

Toupret do a filler called elafib,

http://www.decoratingdirect.co.uk/viewprod/t/TOUELFB/

Try and apply it as cleanly as you can because its not easy to rub down. You can also use it in conjunction with touprets own scrim tape, to avoid a bump in the wall you could cut out a few mm deep into the board or just try without the scrim to start with.

 

[Tristar]

Looks ideal, thanks very much.