Exterior wall sandblasting construction technology Precautions for exterior wall sandblasting construction

House decoration is quite tedious. Nowadays, most people choose to outsource when decorating, so it can save a lot of trouble. Although outsourcing, you must also master some decoration knowledge. Only then can it play a good supervisory role. Nowadays, many people use exterior wall sandblasting to decorate exterior walls. Next, let’s take a look at what is the sandblasting construction process for exterior walls? What issues should be paid attention to during sandblasting construction for exterior walls?

What is the construction process for sandblasting exterior walls?

1. Clean the base → moisten the wall → prepare materials → sandblasting → maintenance.

2. Sandblasting construction materials and characteristics

(1) Special powder for sandblasting;

(2) Special powder for sandblasting Glue;

(3) Construction sand;

(4) Accessories.

3. The thickness of sandblasting is only 1~3mm, which is only 1/(3~4) of the thickness of ordinary roughening. This inevitably requires that the sandblasting material must have excellent indicators in all aspects, otherwise the bonding strength cannot be guaranteed. and other requirements.

4. The special sandblasting powder is formulated with excellent water retention and enhanced high-performance additives.

5. The special glue for sandblasting uses synthetic resin emulsion as the base material. The characteristics of this type of material are good permeability, can fully penetrate into the base layer, excellent water resistance, freeze-thaw resistance, pressure resistance, and Various indicators such as folding and tensile strength are better than water-soluble adhesives. Its disadvantages are poor permeability and workability, which cannot penetrate into the base layer well. Molecules migrate on the interface surface, and many microscopic particles are easily produced after material degradation These holes will reduce the strength of cement mortar, so it is not suitable as a bonding material to improve interface performance.

What issues should be paid attention to during exterior wall sandblasting construction?

1. We should check the label before using the paint, stir it carefully and evenly, and close the lid tightly after use. .

2. The storage and construction of coatings should comply with the temperature conditions specified in the product instructions, which should usually be above 5°C. If the paint freezes during storage and transportation, it should be placed in a room with a higher temperature and allowed to thaw naturally. Do not bake it with fire. The thawed paint can only be used after it has been confirmed that there has been no qualitative change.

3. Paint color matching is completed by the manufacturer or distributor to ensure the consistency of the color of the batch of paint. At the same time, Jiuzheng Home Furnishing Network reminds that if color mixing is required at the construction site, the color paste provided by the manufacturer or designated brand and origin must be used by a dedicated person according to the usage requirements and proportions.

4. Attention should be paid to the protection of finished products in coating projects to prevent artificial contamination caused by cross-working operations. If the wall surface that has been constructed is contaminated by dirt, it can be gently wiped with a clean wet rag. If the contamination is serious, it should be repainted.

5. Pay attention to the weather forecast before construction and avoid working before rain or snow comes.

6. Painting tools should be cleaned promptly after use and kept properly.

Through the introduction of the above article, you should have some understanding of what is the construction process of exterior wall sandblasting? What are the issues that should be paid attention to during exterior wall sandblasting construction? The method of exterior wall sandblasting construction is actually very simple and much simpler than laying ceramic tiles, so mastering the method of exterior wall sandblasting can play a very good role in supervision. I hope my introduction can provide you with useful help.