How does exterior wall coating construction become excellent at one time?

What are the precautions in the construction phase of exterior wall coatings? Let's discuss one by one below:

01 Grassroots control and process connection

(1) The outer wall base check

The quality control of the external wall base determines 80% of the external wall forming quality

If the external wall base is not controlled in place, the cost of rectification using hanging baskets will be high and the effect will be poor.

The K board is in the transfer position of the floors, and the quality control is difficult, but it has a great influence on the quality of the external wall base

(2) Interface division and process connection

Balcony ceiling putty and exterior wall paint are likely to cause cross-contamination.

Gluing of exterior windows and sliding doors should be carried out on the base (structural surface or plastering surface), and putty construction should be carried out after gluing is completed

Earthwork backfilling should be avoided at the same time as the exterior wall paint.

02 Construction process

(1) Putty for exterior wall

There may be anti-counterfeit and inferior materials in exterior wall putty.

The aluminum mold construction should avoid the use of oily release agents, which may cause the putty layer to fall off in the later stage
.

(2) Sealing primer

The appearance of the sealing primer is a transparent emulsion, which is an important functional material
.
The materials need to be diluted on site
.
If it is over-diluted, it is easy to cause blooming and efflorescence on the wall
.

The coating rate can be calculated according to the manufacturer's guidance and the on-site proofing dosage for the entire layer, and the on-site dosage can be verified to supervise that the process is complete and diluted properly
.

(3) Top coat

The top coat is used in mixed batches, which is prone to chromatic aberration.
The same facade material shall not be used in mixed batches
.
Different batches of finishes have no obvious labels.
It is recommended to store them in batches according to the order of arrival on site, and plan reasonably when using them
.

(4) Finish paint

Finishing paint is very important to increase the gloss of the exterior wall and prevent dust
.
The short-term effect of the finish paint is not obvious, it is difficult to distinguish whether it is applied or not, and it is easy to cut corners
.
The coating rate can be calculated according to the manufacturer's guidance and the whole-layer proofing dosage on site, and the on-site dosage can be verified to supervise the completeness of the process
.

03 details

(1) Coating rate control

The coating rate has a huge impact on the construction effect, but the team in the exterior wall coating construction often copy experience and ignore the control of the coating rate
.
It is recommended to increase the coating rate acceptance during the acceptance of the whole-layer construction model, and the coating rate of the model should not be lower than the manufacturer's guidance
.
According to the proofing results and the manufacturer's guidance, the theoretical coating rate of the project is obtained
.

(2) Avoid stubble marks

The exterior walls are mostly constructed with hanging baskets.
Improper handling of the stubble parts during the construction of different hanging baskets can easily cause stubble marks and affect the perception
.
Construction of the basket should be planned in advance arrangement, the boundary points should be provided at the joints, and the like yin and yang corner
.
The large gable wall must be constructed with two hanging baskets at the same time to avoid vertical joint marks
.

▲Poor perception of vertical stubble seams

(3) Close in detail

The parapet and balconies are 5% sloped towards the inner side to prevent rainwater from polluting the finish
.
The deformation joints are installed layer by layer with the climbing frame.
Pay attention to whether the deformation joint plates are deformed and the surface is clean before coating construction
.

(4) The goods are not on the right board

The manufacturer should be used as a guide during the project construction and proofing, and the construction team should conduct the proofing one by one to ensure that the construction team is clear about the material requirements and methods, and resolutely eliminates "empiricalism"
.
The first batch, the first building, and the first construction must have clear standards and correct wrong behaviors
.

▲Good effect of facade construction

04 Linked manufacturers

The project purchases not only the materials of the manufacturer, but also the service of the manufacturer.
The manufacturer is also an expert who is most familiar with materials
.
Manufacturers can be required to go to the site for technical clarification and proofing assistance, and large-scale construction can only be carried out after the prototype has passed the acceptance of engineering, design and other parties
.

In response to the problems and doubts in the construction process, contact the manufacturer in time to answer questions, avoiding major mistakes and remedying them afterwards
.

Manufacturers are regularly invited to the site to inspect materials, construction ratios, and usage to avoid counterfeit and inferior products entering the site, substandard quality, and cutting corners
.

▲A good case of facade construction

Facade perception and quality are important sensitive points for the owners, and are also an important foundation for the high quality of the community
.
Once the quality of the exterior wall is formed, it will be difficult, dangerous and ineffective in the later stage of rectification
.

Every frontline engineer should study and study in-depth how to ensure that the external wall quality meets the standards at the basic level in the early stage of the external wall through management and control, and that the construction is formed once and then becomes excellent
.