How to draw in rainy days? Matters needing attention in rainy day painting

Attention should be paid to painting in rainy season.

As the weather gets hotter and hotter, many places have entered the rainy season again. Therefore, this book reminds everyone that we must be very careful when painting in rainy season.

Keep the room well ventilated.

When the air is humid in rainy days, all doors and windows should be opened during construction to maintain good indoor ventilation. This is not only beneficial to the health of construction workers, but also helps indoor walls, floors and wood to dry as soon as possible.

Don't draw on rainy days.

For wood products, when painting varnish or nitrolacquer, remember not to brush it in rainy days. Because the surface of wood products will condense a layer of water vapor in rainy days, if the paint is painted, the water vapor will be wrapped in the paint film, making the surface of wood products turbid. For example, painting nitrocellulose paint in rainy days will lead to uneven color, and painting will lead to whitening.

If you have to finish before the deadline, you can add a certain amount of white powder to the paint. White powder can absorb the moisture in the air and accelerate the drying speed, but it will also bring some negative effects on the engineering quality. Therefore, under normal circumstances, even if the construction team is required to do some other work first or temporarily stop work for two days, try not to paint in rainy days.

Scrape putty to prolong drying time.

Scraping putty is our choice of wall lining material, which has waterproof, moisture-proof, pulverization-proof and mildew-proof functions. Before painting the wall, it usually takes 1 to 3 times, during which the normal drying time is 1 to 2 days. However, when scraping putty in rainy days, you should first wipe the moisture on the wall with a dry cloth to keep the wall as dry as possible. At the same time, according to the actual situation of the weather, try to extend the drying time of putty, generally 2 to 3 days is appropriate.

The most important thing in rainy season construction is to prevent the deformation of wood products made on site.

When the wooden doors and windows are formed but not painted (sprayed), they can be pressed with heavy objects for nearly a week, so that the doors and windows are basically stable, thus preventing the wooden products from being deformed by moisture. After the decorative panel material comes into play, the first thing is the back cover oil to control the absorption of water; When nailing, the shrinkage of the door cover and the closing line should be set aside, and then planed with an edge-closing machine one week later to avoid shrinkage and cracking.