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Ask The Trades › DIY Forum › Building Questions › Plastering question

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Plastering question (Read 3517 times)

CWatters

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Plastering question
Nov 18^th, 2008, 9:21pm

Newish house with a concrete lintel/slab above the fireplace. When the fire was first used the concrete slab expanded and cracked the plaster above the fire. The area now sounds "blown" when tapped.

Is there a way to replaster it so that the plaster is isolated from any expansion and contraction the slab behind?

The fire is an insert type and I'm not sure if I can afford the depth to batten out the wall and plasterboard it.

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Zambezi GDPR opt-out Total Thanks: 58 For This Post: 0	Re: Plastering question Reply #1 - Nov 18^th, 2008, 10:15pm Tidy up the crack and repaint, if it sounds blown then it is already separate Not sure what to suggest... I will get my coat....
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woodsmith Global Moderator Trade Member Author Offline Posts: 4407 Total Thanks: 137 For This Post: 0 Gender: Trade: Joiner	Re: Plastering question Reply #2 - Nov 19^th, 2008, 7:32am It's always a problem over a fireplace. I have a crack in the plaster over mine. I fill it each year and it reappears the next.
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CWatters Super Member Offline "Daddy fick it" says James Posts: 5150 Total Thanks: 58 For This Post: 0 Gender:	Re: Plastering question Reply #3 - Nov 19^th, 2008, 9:10am I probably won't get around to fixing this until next summer but thought I might try removing the plaster over a larger area then fixing a patch of something like 2mm polystyrene insulation or 6mm plasterboard to the wall before replastering. It needs something to isolate the movement going on underneath.
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woodsmith Global Moderator Trade Member Author Offline Posts: 4407 Total Thanks: 137 For This Post: 0 Gender: Trade: Joiner	Re: Plastering question Reply #4 - Nov 19^th, 2008, 10:55pm Plasterboard would be your best bet, that's what I've been advised to use anyway. That or a big mirror to cover the crack!
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CWatters Super Member Offline "Daddy fick it" says James Posts: 5150 Total Thanks: 58 For This Post: 0 Gender:	Re: Plastering question Reply #5 - Nov 20^th, 2008, 5:03pm Mirror or better still a nice big plasma TV would be good but the crack is just a bit too low.
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