Stucco method The consistency of lime paint powder can be adjusted by adding less water, resulting in what we refer to as Stucco which will turn out as a thick paste.  The application of Stucco is facilitated with a stainless-steel spatula for achieving an even surface. Stucco requires a longer drying and hardening time (typically 3-5 days, varying based on factors like layer thickness and room humidity). Waiting longer enhances results. Note that Stucco application may result in a bit darker appearance compared to using a brush when painting with lime paint.