Freelance 2014-2

[faraway]

You have to use primer or primer/sealer paint when painting "plaster" walls and render walls when building a house.
Mark

Mark, just the cheapest primer available at the home improvement store. The raw plaster will soak the paint like crazy and even coffee thin paint will dry to fast. It needs to be still wet from brush stroke n when you come back with stroke n+1. The raw plaster gives you less than a second to place the next strike and you end up with stripes.
It still soak a lot of moisture after 2-3 layers of "any white flat paint" does but it is easier to control. Anyhow do not perfect seal the plaster surface. It will be like styrene if it is perfect sealed.