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amakarevic 03-15-2012 12:35 PM

plaster repair
 
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I am looking for ideas how to restore some plaster patches I tore down when taking out my old baseboard. It was plaster over brick, maybe 1/2" thick. The house is 100 yrs old. I imagine there would be some product out there for legacy applications like this.

Please see attached.

Thanks

stuart45 03-15-2012 12:50 PM

Being that old it's probably lime/sand 2 or 3 coat work. There are 1 or 2 coat gypsum plasters that you can use instead if you wish, although I would probably use the lime mix.

amakarevic 03-15-2012 01:06 PM

Quote:

Originally Posted by stuart45 (Post 878248)
Being that old it's probably lime/sand 2 or 3 coat work. There are 1 or 2 coat gypsum plasters that you can use instead if you wish, although I would probably use the lime mix.

thanks. which ratio lime vs. sand? and how long do you wait between each coat?

stuart45 03-15-2012 02:06 PM

3/1 sand/lime for the base coat, 1/1 lime/silver sand for the setting coat. Lime does take longer the cement or gypsum to cure, which is one reason why it went out of general use.

Skuce 03-16-2012 01:54 AM

Make sure to dampen the brickwork first very well. Also dampen the finished plaster a few times after you are all done and it has set. The lime needs moisture to carbonate properly

See if you can get a Natural Hydraulic Lime as opposed to a Hydrated Lime. The NHL's are more forgiving and cure on their own faster.

amakarevic 07-23-2012 01:35 PM

what is the difference between the regular and silver sand?

thanks


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