Distemper is an early form of whitewash. As a decorative paint, it is easily marked and cannot get wet. It has been used since antiquity for painting walls and other types of house decoration. Because it’s not waterproof, it has most often been used on interior surfaces.
Distemper paint is also known as cement paint. This is because such paint can be applied directly to cement walls without the use of a primer. Distemper paints are used on both interior and exterior walls.
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New Surface Preparation:
If you want to paint a newly plastered surface, allow it to cure completely. As per the manufacturer recommendation, allow it cure for 28 days for new. Preferably allow moisture to dry completely for 3 to 6 months period depending upon local climate or where there is high humidity.
Remove the loose particles, dust, dirt, grease, wax, mortar dropping, etc. using wire brush or putty knife.
Then wipe off the whole surface using a dry cloth.
Old Surface Preparation:
If the distemper is to be applied on the existing painted surface, first remove the loose particles, dust, dirt, grease, wax, mortar droppings, growth of fungus, algae, dampness, etc. with the help of a putty knife or wire brush.
Rub the old surface thoroughly with sandpaper. Wash the entire surface and allow it to dry fully.
Fill the holes and cracks (upto 3 mm) with the putty and allow it for hardening.
Sand the wall with the sandpaper to get a smooth surface and wipe off the dust with dry cloth.