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Old 03-15-2012, 12:35 PM   #1
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plaster repair


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.

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Old 03-15-2012, 12:50 PM   #2
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plaster repair


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.

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Old 03-15-2012, 01:06 PM   #3
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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?
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Old 03-15-2012, 02:06 PM   #4
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plaster repair


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.
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Old 03-16-2012, 01:54 AM   #5
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plaster repair


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.
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Old 07-23-2012, 01:35 PM   #6
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what is the difference between the regular and silver sand?

thanks

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