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Natural DIY Lime Plaster in a 70’s Build

 
Posts: 4
Location: Pacific NW USA
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Hi all!

We recently purchased the house we had been renting for 6 years and I am attempting to turn my 70’s build into an old French country style home. I want to let these walls breathe and work like the farm we have!

I caught onto this forum through a thread here on covering latex walls to lime plaster but the poster seems to no longer be participating and I am left with so many questions mid-process!

First of all- We live in the pacific NW on a farm with 9 kids. We’re not rich, we are huge DIYers and we’re more or less into self sufficiency.

I am not looking for companies who offer a 30lb bag of premix lime plaster for $120- I am looking for ways to inexpensively mix our own lime plaster.

The problem I have encountered is the vast array of opinions on what to use. Some people say use Portland cement, some people say use sand- others brick dust and others ash.

In the thread here on converting latex walls to lime, he doesn’t mention the use of sand in the lime mix and just used lime and joint compound over the prepared wall-but I’m beginning to wonder if he used a Limestrong mix that had added sand?

I have my type S hydrated lime, I have my joint compound I just need to know if I have to use sand and which kind I should use and from where? Home Depot has all sorts of bags of things.

I also am looking to do a tadelakt system in our bathroom and I was hoping someone has an actual olive oil soap recipe I could use to make my own oil soap?

The Limestrong company has a lot of non- natural sealers etc, which is not how it’s done historically.

I’ve been browsing all the lime topics here but everything seems to round back to the same issues I’ve been having finding a natural recipe for lime plaster that can go over my prepared gypsum walls.

-Jyn
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Posts: 6451
Location: USDA Zone 8a
1909
dog hunting food preservation cooking bee greening the desert
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Here are some threads about olive oil soap:

https://permies.com/t/125303/personal-care/purity/Sources-Beginning-Soapmakers

https://permies.com/t/48586/Soap-making-oils-choose

Some threads about lime:

https://permies.com/t/166230/Interior-walls

https://permies.com/t/152582/Lime-plaster-questions

https://permies.com/t/170071/ideas-renovating-house-mediterranean-homesteading

I hope these will help answer your questions.
 
Jyn Meyer
Posts: 4
Location: Pacific NW USA
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Hi Anne!

So, my situation is quite different than Cobb because we aren’t using a cobb but an internal lime plaster smooth effect from materials they used to be made of and the soap is particular for the Tadelakt. I have found that KissMyFace soap is a great alternative, but I would like to find out why?

My issues mainly are finding the right sand and even if I need sand for the main room!

I have talked to some plasterers locally and sand suppliers and… it’s very sad, really. The plasterer I talked to said he didn’t ever put sand in his mixes. 👀

The sand supplier mostly said they don’t offer unwashed limestone sand for lime plaster… and didn’t even direct me to where I might find it.

Everywhere I go and research people say,” Add this kind of sand…” (of none I can find sources in Portland, Oregon) “… and use this kind of lime…” (off which I found one resource for it). Or they say, “Buy *OUR* brand -it’s the best- and has everything added already it’s only $150 for a 25lb bag!!!”

And here I am sitting in my new bathroom with greenboard walls begging for a covering feeling frustrated.

Anne Miller wrote:Here are some threads about olive oil soap:

https://permies.com/t/125303/personal-care/purity/Sources-Beginning-Soapmakers

https://permies.com/t/48586/Soap-making-oils-choose

Some threads about lime:

https://permies.com/t/166230/Interior-walls

https://permies.com/t/152582/Lime-plaster-questions

https://permies.com/t/170071/ideas-renovating-house-mediterranean-homesteading

I hope these will help answer your questions.

 
Anne Miller
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Location: USDA Zone 8a
1909
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Jyn said, "And here I am sitting in my new bathroom with greenboard walls begging for a covering feeling frustrated.



I am sorry that you did not find any of the links I offered on lime plastering helpful.

Our forum has what a category we call "Zero Replies".  I typically go through those Topics and look for the ones that have not had any replies in several days.

Your topic caught my eye several times so when it had not received any replies after 2 or 3 days I offered some threads on lime plaster.  I am sorry none of these were of value to you.

This leads me to believe that you may not find the answer you are looking for.

As to your question regarding the Kiss My Face soap:

I have found that KissMyFace soap is a great alternative, but I would like to find out why?



I would suggest looking at the ingredients listed.

Happy hunting and maybe by bumping this thread once again there will be someone that will reply with some information that you feel is helpful.
 
Anne Miller
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While searching for the answer to someone else question I found these that I thought you might find interesting:

https://www.wconline.com/articles/88086-the-history-of-plaster-in-architecture-the-ancient-and-classical-periods

https://permies.com/t/35033/Natural-Plaster-Book-Dan-Chiras

 
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Jyn, I've never done tadelakt or tried to plaster over gypsum board walls, but I  checked a book I have on natural finishes (Weismann and Bryce).
For the tadelakt the sand used needs to be fine - graded to less than 1mm. I believe marble sand can be used (more like the Italian marmorino), or limestone sand to replicate the silica impurities in Moroccan lime. Maybe a cheap source of marble sand could be the waste byproducts from a local monumental mason or someone doing marble countertops?
I'm not really sure the sand type is all-important, more important is particle size. A suggested mix is 1 part NHL 2 or NHL 3 lime to 2 parts sand, but sensibly they recommend testing on a small area first as depending on the lime and soap, the ratio may need tweaking. It's a UK book, so I'm not sure of the US equivalents.
This book also recommends using a sanded priming coat on this sort of building board before applying lime plaster, suggesting a homemade version of wheatflour paste and sand.

Best wishes for your ambitious project! Would love to see how it turns out!
 
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