Do I have to buy primer and topcoat for home improvement latex paint?

Primer and topcoat need not be brushed. Generally speaking, cement walls can be brushed if they have a long enough curing period. For example, an old wall that is three to five years old can be directly painted with topcoat without primer. If you agree with putty, you must brush the primer. Most putty is alkaline.

The building area is 128 square meters. During construction, if you roll (brush) one barrel of latex paint (18L or 25KG) and add primer 1, two barrels of topcoat will be enough, totaling ***3 barrels.

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Latex paint is the common name of latex paint, which was born in the middle and late 1970s. It is a kind of synthetic resin latex paint represented by acrylate emulsion.

Latex paint is a water-dispersible coating based on synthetic resin emulsion, which is refined by grinding and dispersing fillers and adding various additives.

Latex paint has many advantages different from traditional wall paint, such as easy brushing, quick drying, water resistance and good scrub resistance of paint film.

In our country, it is customary to use synthetic resin emulsion as the base material, water as the dispersion medium, and add pigments, fillers (also known as bulk pigments) and additives to make a coating, which is called latex paint, also known as latex paint.

References:

Latex Paint-Baidu Encyclopedia