lime plaster

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stilt

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Hi guys. New here. Any tips for applying lime plaster over existing lime plaster. What type of preping would be.needed for.the existing lime walls. Cheers guys
 
Probably need a coarse sand and or devil float to get a key up on the raw walls and make sure no paste or size remains. Really good dampen down and prob two or three coats of fine setting stuff to gain control of the suction.
Painted walls will need a d.g, thistle bond or blue grit etc to get key. Will kill the breath ability and be harder to finish with no suction. Doable tho.
Or try and scrap skim coat back to the backing if all is sound and set that.
Hope this helps.
 
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