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Subject: "arsenic treated lath and lime plaster"     Previous Topic | Next Topic
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Conferences Fresco Painting Fresco Painting (original forum) Topic #146
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dulce_domum
Member since 27-Jul-05
1 posts
27-Jul-05, 10:53 PM (PST)
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"arsenic treated lath and lime plaster"
 
   I have been asked if the arsenic in pressure-treated wood lath would react with the lime in a lime plaster. Does someone here know if it would and in what way?


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adminadmin click here to view user rating
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286 posts, 4 feedbacks, 6 points
30-Jul-05, 02:57 PM (PST)
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1. "RE: arsenic treated lath and lime plaster"
In response to message #0
 
interesting question...

i am tempted to say that it would react the same way as with the regular stucco (just fine), however some may come to the surface and affect the colors and that may not be good.

Why would you use pressure treated lath? I understand that it suppose to last longer in the dump condition, but the dump condition (if plaster is dump for a prolonged period of time) will destroy the plaster on it's own before any lath goes bad... Getting wet and dry (as exterior wall) is fine - just makes the wall stronger, but dumpness is a plaster killer.

So, really using pressure treated lath is an overkill that does not make the wall to last longer.

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Dulce_domum
unregistered user
30-Jul-05, 08:12 PM (PST)
 
2. "RE: arsenic treated lath and lime plaster"
In response to message #1
 
   Thanks for the reply. I did not choose the lath. This is a question posed to me by an architect working on a building restoration. It seems the lath was put up before she had come to the job.

Thanks, again!


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Farago
Member since 10-Jul-04
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12-Aug-05, 04:52 AM (PST)
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3. "RE: arsenic treated lath and lime plaster"
In response to message #2
 
   Hi, Arsenic was used in ancient times to make certain lime based plasters set quicker.Dont know if this helps any.
Cheers Dean


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Dulce_domum
unregistered user
12-Aug-05, 06:17 AM (PST)
 
4. "RE: arsenic treated lath and lime plaster"
In response to message #3
 
   Thanks, Dean!


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adminadmin click here to view user rating
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286 posts, 4 feedbacks, 6 points
12-Aug-05, 10:20 AM (PST)
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5. "RE: arsenic treated lath and lime plaster"
In response to message #3
 
>Hi, Arsenic was used in ancient times to make
>certain lime based plasters set quicker.Dont
>know if this helps any.
>Cheers Dean

good to know, thanks

learn fresco at http://FrescoSchool.org

fresco painting video tutorials: http://www.FrescoSchool.com

also visit

Fresco School Video Channel
http://youtube.com/FrescoSchool

Contemporary Fresco Gazette
http://trueFresco.Org
commission fresco or mural http://iLAdesigns.com

admin
____________________________
Contemporary Fresco Painting Resouce Center
http://TrueFresco.com


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