Blown plaster

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Ive recently re skimmed a wall for some one and the backing was bonding on brick its now about 2 months down the line and its started cracking do i need to hack it all off and start from scratch or will a skim with tape over the cracks be sufficient enough
 
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Ok, Did you put multi finish straight onto the dry Bonding, or did you prep it first?
what are the cracks like, are they straight cracks, or are they like spiders legs, going in alk directions?
A couple of pics would be great really.
Plaster will crack if it dries out too quick, or if the undercoat underneath is not bonded to the wall, and moves.
 
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Ok, Did you put multi finish straight onto the dry Bonding, or did you prep it first?
what are the cracks like, are they straight cracks, or are they like spiders legs, going in alk directions?
A couple of pics would be great really.
Plaster will crack if it dries out too quick, or if the undercoat underneath is not bonded to the wall, and moves.

Sorry ent got pictures but yes its all like spiders legs yes i used pva2 coats 2 layers of multi finish
 
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Ok,, sorry about all the questions. Did you let the first coat of pva dry, before you put on the second coat of pva?
The cause of "spider cracking" like that is "too much suction"/ drying to quick".
 
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Ok,, sorry about all the questions. Did you let the first coat of pva dry, before you put on the second coat of pva?
The cause of "spider cracking" like that is "too much suction"/ drying to quick".

Yeah i let the first coat dry in then applied the second coat when pva was tacky but would it take that long to start cracking
 
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Pity we couldn't see a photo. Every time i've seen spider
cracks, it's been due to drying too quick, dry background, plastering near a radiator etc. Hard to say what's caused yours then. Sometimes, cracked plaster can be hollow underneath too, you'll hear the hollow sound if you lightly run the back of your hand/fingernails over the cracked areas.
 
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Pity we couldn't see a photo. Every time i've seen spider
cracks, it's been due to drying too quick, dry background, plastering near a radiator etc. Hard to say what's caused yours then. Sometimes, cracked plaster can be hollow underneath too, you'll hear the hollow sound if you lightly run the back of your hand/fingernails over the cracked areas.

Ok so if i go there today n its hollow shall i knock them off and fill with bonding n then skim the wall again
 
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Pity we couldn't see a photo. Every time i've seen spider
cracks, it's been due to drying too quick, dry background, plastering near a radiator etc. Hard to say what's caused yours then. Sometimes, cracked plaster can be hollow underneath too, you'll hear the hollow sound if you lightly run the back of your hand/fingernails over the cracked areas.

If its hollow best to knock it of and start from brick you reckon or could i get away with some bits being hollow
 
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are the first two pic cracks vertical and is the last pic crack horizontal?

fwiw: thats a very poor skim finish.
 
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