Re: [GBlist] final coat of traditional stucco

[Norbert Senf <mheat@mha-net.org>]

Sacie:

In traditional 3 coat interior plaster work, the finish coat is a skim 
coat. In other words, all of your flattening of the wall, etc. has to 
happen in your brown coat.

Traditional interior skim coats were combinations of lime putty and plaster 
of paris (gypsum).

If your base coats are cement based, you could also use, for example 2 
lime, 1 white cement, 3 plastering sand for a coat that would go on about 
1/8" thick, be fairly hard, and take a hydraulic set. It could be floated 
or sponged (easier) to a sand finish.

If you don't mind a softer finish, you could use 1 finishing lime to 1 
sand, which would stay workable for as long as you care to keep it from air 
drying by keeping it misted. You have to have the right amount of suction 
in your brown coat to start. If it has too much, you need to mist it first 
to get it to the right amount.

Best ....... Norbert

At 09:47 PM 2001-09-13 -0500, Sacie H Lambertson wrote:
>We're about to finish the brown, or second coat of a 3 coat stucco job on
>both the interior and exterior of a house.  I want the final, interior coat
>to look like plaster, ie smooth and slightly undulating in a nice hand-done
>look.  Will in fact be done by hand but I need advice on good mixtures for
>this.  Anyone out there know about stucco?  The usual fine sand, white
>portland and color mix will dry too quickly for the experimentation
>necessary to get both the color and the texture right.  What formula can
>you give me as a better alternative?  Sacie Lambertson

----------------------------------------
Norbert Senf---------- mheat@mha-net.org-nospam
Masonry Stove Builders	(remove -nospam)
RR 5, Shawville------- www.heatkit.com		
Quebec J0X 2Y0-------- fax:-----819.647.6082
---------------------- voice:---819.647.5092
			
		
				



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