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do lime and clay really get along?  RSS feed

 
author
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Location: British Columbia Canada
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i would love to use your collective expertise here.

my experience has some answers but i wanna know what you all think.

lime plaster over clay plaster yay or nay?
lime mixed into light clay straw to help prevent bugs. thoughts?
what proportion of lime to clay?
like can i add my typical type s builders lime to my clay slip? or should i keep them separate until the straw mixing stage?

thanks hive mind.
 
pollinator
Posts: 236
Location: Northern New Mexico, Zone 5b
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In my experience lime plaster over earthenplaster works fine if there is good tooth to the earthen plaster (can't be crumbly or too smooth).

Mixing lime into earthen plaster is trickier. Too much lime makes the clay a less effective binder. I have found up to 10% lime (percentage of binder by volume) is generally o.k.

You could probably mix lime into the slip for light clay straw.  I have never done this.  I haven't had any issues with insects or other critters in the clay straw. You may be trying to solve a non-existent problem with this. Personally, I wouldn't do it, but It would probably work.

Type S lime is fine. For plaster I like to have it soaking for weeks before use, but that isn't necessary. Protect yourself when mixing lime.
 
molly murphy
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Location: British Columbia Canada
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i also have never had a problem with critters unless the structure was unsound to begin with....
just trying to appease worried clients and want to make sure im not missing something. people are always so worried that their natural home will melt and / or become a giant ant hill.
thank you
 
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