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General Plaster FAQ

Can I use a drywall pan and knife to apply Earthaus Plasters?

Yes. Many drywall finishers are more proficient with a pan and knife than a hawk and trowel.   Depending on the finish, a trowel may be a better option for smoothing and burnishing once the plaster is on the wall.

Can I paint over Earthaus Plaster finishes?

Yes. Our finishes can be painted over.  For Soap sealed and burnished finishes, a light sanding may be needed to create a suitable bond for paint application.  A high quality primer is recommended prior to painting over Earthaus plaster.

Can I apply Earthaus Plasters in areas exposed to high heat?

Plaster applied in high-heat areas will usually work well. In areas with large temperature fluctuations, it is common to see hairline cracks in plaster finishes. These cracks tend to be caused by the expansion and contraction of the underlying substr

What causes plaster to crack?

There are two main categories of cracks with plastering. 1. Cracks from substrate movement:. These are by far the most common type of crack.   Movement cracks tend to happen sometime after the plaster has been applied.   They are usually very fine an

How long do Earthaus plasters take to set up once mixed?

Earthaus plasters contain lime and fine pumice aggregate.  When mixed with water these two materials come together to form a mild pozzolanic (cementitious) reaction.   In contrast to cement, the Earthaus reaction happens relatively slowly.  Our plast