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.
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:
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!
I'm only 60! That's not to old to learn to be a permie, right?
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