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juco · Joined: 18 Sep 2007 Posts: 59 Location: scotland

This `crack` was discovered after stripping wallpaper, its where 2 plasterboard sheets come together and both edges are `pushing` out from the wall.

Do I just scrape out and fill with plaster then sand or should I be doing more?

thanks

thescruff · Moderator Joined: 03 May 2003 Posts: 4616 Location: Bath

How are the sheets fixed, they may have come unstuck if they're pushing out, and really should be fix first, you can scrape the joint out and fill with normal filler using a broad knife or trowel

juco · Joined: 18 Sep 2007 Posts: 59 Location: scotland

Not sure how they are fixed I will check it out tomorrow.

thanks for reply

thescruff · Moderator Joined: 03 May 2003 Posts: 4616 Location: Bath

I think it's quite important or they will crack again.

juco · Joined: 18 Sep 2007 Posts: 59 Location: scotland

The joint is where 2 sheets of board come together it is nailed down at the edges and has been taped over it appears that the tape has split, and over the years the gap has widened (60 year old house). There may have been some water damage at some stage and possibly caused slight warping of the edges of the board.

thescruff · Moderator Joined: 03 May 2003 Posts: 4616 Location: Bath

See if you can scrap it back then sand it down and re-scrim if possible

juco · Joined: 18 Sep 2007 Posts: 59 Location: scotland

Thanks for the reply I will give that a go.

regards

thescruff · Moderator Joined: 03 May 2003 Posts: 4616 Location: Bath

If you have an electric sander take it down just below flush then you can scrim and make good