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How to replicate this finish?


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I have just sandblasted our beams in the new house and manged to blast off some patches of plaster.

 

The finish appears to be lime based with some sort of grit in? It seems to have flecks of vermiculite in it as well? Is that a done thing or am I imagining that being in the mix?

 

I imagine that they let it go off partially and polish off the top layer to expose the grit?

 

Any ideas on how to recreate this? I was thinking thistle bonding coat might be a good option and getting it level then adding a slurry mix on top and using a stipple roller to blend in?

 

Any other ideas?

1619954424115375940060814567333.jpg

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Looks like a smooth coat of plaster and rough painted white sandtex textured masonry paint on top.

 

That's my guess from the photo. But it could also be some form of artex, or plaster rough finished and painted over. 

 

But the best advice I can give is to 

have a practice on something else until you get the best match. As long as it matches you could use plaster of Paris, lime morta and a garden fork.

 

I have had similar fun fixing holes in artex ceilings... 

 

Good luck

 

Marvin

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