Lime is a calcium-containing inorganic mineral composed primarily of oxides, and hydroxide, usually calcium oxide and/ or calcium hydroxide. It is also the name for calcium oxide which occurs as a product of coal-seam fires and in altered limestone xenoliths in volcanic ejecta
Jane Mulberry wrote:Amy, once calcium hydroxide is well diluted, it is a lot less corrosive. And once it's mixed, as it ages, it becomes less corrosive, I think. The concentrated powder in the bags does need care to minimise contact and avoid getting it in the eyes. I see recommendations for wearing gloves and eye protection when applying limewash. Once it's on the wall or tree, it would surely be kid-safe.
Skandi, I loved the pics of your fab barn limewashing job! Was that well-aged limewash or freshly mixed?
...(C)onsider making your own milk paint. Some recipes require you to curdle milk for 24 hours (1/2 cup of lime juice, lemon juice, or white vinegar to one quart of skim milk), then strain out the curds and mix the whey with pigment powder (available at art supply stores or online from resources such as the Earth Pigment Company). Don a face mask for protection when using the finely powdered pigment.
A quicker recipe uses powdered milk: Combine ½ cup milk powder, 1 teaspoon of pigment, a dash calcium hydroxide, and two tablespoons of water in a container or dedicated blender and mix very well. Double or triple the recipe as needed, but remember that milk paint has a short shelf life so only mix as much as you intend to use at a time.
For every 1 part starch paste, dilute with 2 parts water. That will make the paste liquid enough to permit adding the other ingredients.
Next, add enough colored clay or white kaolin clay with pigments to achieve a consistency that will spread easily with a brush. It is difficult to describe, but we look for a mixture that will cover in two coats. The right consistency will be like thick cream.
Anne Miller wrote:Amy, I am sorry that you have not gotten an answer to a safe paint for your garden.
I was sure that if "Permies" used whitewash in that PEP Badge that it was safe to use.
It is my understanding that Lime is made from limestone and since I live where limestone is very prevalent especially in my well water I thought it was a safe product.