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Can Earthborn paints be applied to lime plaster, lime wash or lime rendered walls?

We recommend using Earthborn Claypaint on interior lime plaster and lime render because unlike most other paints, it does not reduce the breathability. Conventional vinyl emulsions would partially seal the surface, causing potential problems for the building fabric and the likelihood of the paint ‘blowing off’. Claypaint allows the walls to breathe and offers a viable alternative to lime wash.

A few simple steps should be taken before applying Claypaint to any lime surface:

  • Lime render or plaster needs to be fully cured before painting. The best person to advise you is your lime provider, however as a general guide allow at least 1 month curing for every 5mm of thickness. In poor drying conditions this time period may be extended.
  • Before painting make sure the surface is stable (not flaky or powdery).
  • Slightly moisten the surface before applying the first coat of paint – a water spray bottle is perfect for this.
  • When painting onto cured new interior lime plaster, dilute the first coat of Claypaint with around 20% water followed by a full coat.

If over painting interior lime wash, ensure the surface is sound and stable before painting. A diluted coat of Earthborn Wall Glaze may be applied to espcially dusty surfaces to help stabilise prior to painting.