Make a mist coat fresh plaster is extremely porous and any moisture will be quickly absorbed into the wall.
Best way to paint new plaster walls.
A flat or matte finish paint will help conceal any surface flaws on older plaster walls.
Applying a quality paint for best results apply an acrylic latex paint using a high quality synthetic fiber paint brush.
Painting onto plaster with standard emulsion literally sets in seconds leaving blobs and drips.
Apply a high quality primer on the plaster wall and allow the primer to dry for the maximum amount of time.
New plaster should be painted first using a mist coat which is a mixture of paint and water mixed at the ratio of 4 parts paint to 1 part water.
Therefore you must seal the plaster before applying the finish paint.
Fix damaged areas of the walls with a patching compound recommended for use on plaster and apply an oil based or shellac primer to seal out moisture.
The very first thing you need to do when painting new plaster is to let it dry.
Once the plaster is dry it should be light with no dark spots and a consistent colour and appearance throughout.
This gives you more time to work with it.
After the mist coat has dried you should then be able to apply your top coat.
For water based paints seal the plaster with one or two mist coats.
To make a mist coat combine a cheaper emulsion paint in a similar colour to your top coat with water.
You can pour good quality paint into a pan and use a roller to evenly apply the first coat of paint to the plaster walls.
Priming and painting the plaster walls.
Any moisture or liquid exposed to the plaster is sucked from the wall at a rapid rate.
A week should be long enough to let it completely dry out and for all damp patches to disappear.
Or use a paint roller that s equipped with a 1 4 to 3 8 inch roller cover.
This is why you need to water down your first paint layer known as a mist coat.
This is why you need to water down your first layer of paint because it stops the paint from drying at an accelerated rate.
To save time and paint use a stain block or a basecoat emulsion on these patches.
Follow with a top quality latex paint to give.