Making wall decoration more practically reduces the loss of paint

Loss of paint in home renovation is difficult to completely avoid, but through some methods to minimize unnecessary wear and tear, save paint. To reduce the loss of paint, first of all, we need to understand the causes of paint wear in home renovation.

(1) Miscalculation of materials For those who are preparing for the decoration for the first time, the calculation of errors in the materials needed will lead to the incomplete use of the purchased paint, and they will eventually be left idle, resulting in wear and tear. If the choice of decoration is a way of contracting the work, the paint is mostly purchased by the owner, then when the calculation mistakes buy too much paint, and all of them are unsealed, the paint that is used up will cause a lot of Waste and wear.

(2) Roughness of the wall surface The roughness of the surface of the base layer is an important factor that determines the loss of the primer. The rougher the wall surface to be coated is, the greater the loss of the paint is. For projects that require multiple layers of construction, the smoothness of each layer of paint and the smoothing effect of sandpaper after construction will also have a direct impact on the subsequent wear of the paint.

(3) Inappropriate method of painting on the wall Currently, the coating methods of paints generally include brush coating, roller coating, traditional air spraying and high pressure airless spraying. Although the use of high-pressure airless spray method is faster, but the paint loss will be much greater than the traditional air spray, brush and roller coating.

(4) Improper selection of construction equipment:

When spraying, the different choice of nozzle will also affect the degree of wear of the paint. The construction unit or the constructor must meet the requirements of a tight construction schedule and achieve a high spraying efficiency. Larger gun nozzles may be used, causing a waste of paint.

(5) Environmental factors:

Various environments around the construction also affect the paint loss to varying degrees. In windy outdoor areas, paint losses are clearly higher than in a well-ventilated and relatively closed shop.

(6) The operating level of the constructor:

Due to the individual's different operating levels, different construction operators may have varying degrees of construction loss during construction, especially in projects that require extensive construction.

Home Improvement Encyclopedia: What are Brush Painting, Roller Coating, Traditional Air Spraying, and High Pressure Airless Spraying?

Brush painting refers to painting with different size and type of paint brush according to the size and type of area to be coated; roller coating refers to painting with a paint roller; air spraying is the use of air spray gun, air flow formed by compressed air Through the nozzle hole of the spray gun, a negative pressure is formed. The negative pressure causes the paint to be sucked from the suction pipe and is sprayed by the nozzle to form a paint mist. The high pressure airless spray is the use of a high pressure plunger pump to directly pressurize the paint to form a high-pressure paint. An atomized air stream is formed at the muzzle to act on the surface of the object to be coated.

The technique of reducing paint consumption in actual construction can provide targeted measures to reduce wear and waste of paint after having a certain understanding of the cause of decoration paint wear.

1. Dust foreign objects, cracks, and peelings on the wall surface of the new wall will affect the brushing effect and cause unnecessary wear and tear. Therefore, all dust and other foreign objects on the wall must be brushed first, and all cracks and peelings must be filled. Stitch and level, while ensuring that the wall is free of saline, greasy, and long ridges. When starting the construction, the neighboring wall should be shielded to avoid spraying paint.

2. Because the old wall has already passed the basic treatment, the only thing to do is to ensure that the wall base is firm. You can use a soda solution to wash the wall first, brush it clean, and then use the child to level the wall.

3, to save the paint, the construction should use brush or roller coating method, and in order to ensure that the cover is flat and smooth, suitable spray gun spray, the need to spray the wall need to be covered in advance.

4, the different choice of nozzle, will also affect the degree of wear of the paint. When using a nozzle with a small spray gun, the loss will be lower, and different brands of spray tools have different spray effects, and the wear of the paint is also different.

5, the best temperature for the paint construction is 5-40 degrees, the humidity is less than 90%. Spring, summer and autumn are more suitable for wall construction. If spraying method is adopted, the wind speed during spraying shall be less than 6 meters per second, and the supply pressure of air compressor shall be over 60 Newtons.

6, do a good job in construction planning, arrange the construction time, if the time is not enough, blindly seeking fast, construction workers may use the depletion paint because of the progress of the way, but also is not conducive to the quality assurance of the decoration. If it is the owner himself who purchases the paint, he must calculate the required amount of paint according to the floor area of ​​the home.

Paint calculation method Wall brush paint is generally 1 bottom 2 sides, that is, once again primer, two topcoats. The primer must be applied. The reason why the primer is applied first is to provide better mold and moisture resistance, to exert the performance of the topcoat, and to save the amount of topcoat.

The calculation of the amount of paint used is based on the floor area of ​​the home. The standard for coating use is per liter of coating area: 1 liter (1L) latex paint can be brushed about 12 to 14 square meters of wall surface once. A barrel of 5 liters of paint can brush 60 to 70 square meters 1 times. During actual construction, the area that can be painted per liter of paint varies depending on the worker's technique, wall conditions, and product characteristics.

For example, a family has a building area of ​​110 square meters, of which the room area that needs to be coated with a wall coating is about 80 square meters, and the painting area is 80*3 is 240 square meters. The amount of primer is equal to the brushing area, and the area per barrel of cloth is coated. Paint dosage = primer amount × 2

Calculation method of building area, home painting area = (building area × 80% - 10) × 3