Method for judging the quality of exterior wall coatings

Exterior wall paint is a kind of paint used to paint the exterior wall of buildings, which needs to have sun protection, waterproof and other properties. Facing so many exterior wall coatings on the market, how to judge their quality? The following small series will talk about the judgment method of exterior wall paint, let's take a look.

Look at water quality solutions.

Exterior wall coating will be layered under static state, and the upper layer of 1/4 is aqueous solution. If the aqueous solution is colorless or yellowish, and there are few clear floating objects, the coating is good.

Look at the fineness of particles

Take a small amount of exterior wall paint and put it in a glass of clear water. After stirring, the water is clearer, the particles are independent and non-sticky, the size is uniform, and the paint quality is better.

Canlas

Take a stick and put some exterior wall paint on it. It is best to hang the wire continuously and evenly for a long time.

Try to feel

Rub your fingers with some exterior wall paint. There is no rough feeling of sand, but it feels greasy when washed with water.

smell

Environmental protection exterior wall coating should be water-based, non-toxic and tasteless; Don't buy exterior wall coatings with flavors. Additives also have environmental problems.

Look at the date of production

Pay attention to the production date and shelf life of exterior wall coatings, and don't buy expired coatings.

Look at the price

It is not that the higher the price, the better, nor that the lower the price, the worse, but that the price of exterior wall coatings has certain cost control.

Look at the brand

Generally speaking, the quality of regular exterior wall paint brands is relatively reliable, but you must go to regular stores to get the goods. There are too many knockoffs on the market now.