Plaster Recipes
Basic Clay Plaster
Composition:
- 1 part clay
- 2.5 parts sand
- 3 parts fresh cow dung
Application: Apply as finish coat for water resistance and binding.
Source: Heca, F. 2020
Extended Plaster Recipe
Composition:
- 3 (5 gallon) buckets of 1/16 inch sifted sand
- 1 bucket of screened clay
- 1 bucket fresh screened cow manure (not dried)
- 8 cups wheat waste
- Fluff of 3-4 cattails
Process:
- Screen all materials to remove debris
- Mix dry ingredients first
- Add cow manure gradually
- Add water slowly while mixing
- Apply in thin, even coats
Source: Liloia, Z. 2024
Finishes
Dung Slurry:
Application: A water-resistant shell can be made by creating a slurry. Cowdung is mixed with water to form a paste and then applied on top of plasters and floors.
Warning: If applied carelessly, it can result in mechanical weathering and decay of the crust.
Source: Gur-Arieh et al, 2018
Double boiled linseed oil:
Take a brush or spray bottle and slowly apply the oil. The material will absorb it quite fast. You will need to apply multiple layers to avoid stains. Appearance: Very dark compared to other finishing methods. Waterproof Ability: High - recommended for areas that are exposed to a lot of water Price: €€
Above: Compact cow manure plaster finished with double boiled linseed oil
Application Tips
- Use fresh cowdung for best water resistance
- Apply in multiple thin coats rather than one thick coat
- Allow proper drying time between coats
- Consider local climate conditions during application