How to explain exterior wall painting technology and what should be paid attention to

Exterior wall painting is an important part of house decoration. It is also related to the appearance of a house, which has attracted the attention of many house owners. So how to explain the exterior wall painting technology and what should you pay attention to? Let me lead you to understand this below.

Many people don’t know much about the technical details of exterior wall painting. Let’s discuss it with me.

Before proceeding, first check whether the position of the window is correct, and check the verticality and flatness of the exterior wall. If there is any deviation, report it to the project department in a timely manner. Before plastering, a steel mesh should be attached to the junction of different substrates, and the overlap between the steel mesh and the substrate should not be less than 150mm. Then, before applying the leveling layer, dots should be made. The vertical line hanging from top to bottom should be based on the thinnest part. The verticality and flatness should be controlled within 5mm. If there are protruding parts, first gouge and apply the interface agent, and use 1:3 cement. The mortar is leveled, and the large-area leveling layer construction will be carried out after passing the acceptance inspection;

During the leveling construction, the thickness of the leveling layer should be controlled within 2cm, and a steel mesh should be added if the plastering thickness is greater than 35mm. . Areas with concrete walls should be roughened first, and all holes in the exterior walls should be plugged with fine stone concrete. The surface should be cleaned and watered to moisten it before plastering over a large area. The leveling layer must be smooth, solid, free of hollows, cracks, and pitted. Only after passing the inspection can the external wall insulation construction be carried out. Exterior wall insulation is constructed strictly in accordance with the insulation system specifications, and the surface verticality and flatness are not greater than 4mm.

Thirdly, long vertical lines must be hung vertically on the exterior wall windows and air-conditioning panels, and horizontal control lines must be popped up on each floor horizontally before closing work can be carried out. The vertical control line is controlled with a theodolite, and the horizontal direction is based on the horizontal line to pull through the line, with an error of 8mm. All lines on the exterior wall must be vertical and vertical, and horizontally on the same straight line. The width of the lines must be consistent as required. All yin and yang angles of the exterior wall must be straight, and the squareness of the yin and yang angles should be controlled within 5mm. The external window sill must have a 20mm flashing slope, and all window sills must be of the same height. Do not close the window sills until the window frame is installed. Leave a straight stubble 5 cm away from the window. At the same time, we should protect the finished plastic steel window frames that have been installed, and whoever pollutes them will be responsible. The parts with drainage requirements should be made with drip lines (troughs). The distance between the drip lines and troughs should be 30mm from the outside. The lines should be neat and straight. The drip lines should be high on the inside and low on the outside. The width and depth of the drip trough should not be less than 10mm.

It is worth noting that you should pay attention to safety before doing it, fasten your seat belt, and strictly abide by the safety regulations and the guidance arrangements of the hanging basket technicians.

Many people do not have a deep understanding of the technical details of exterior wall painting. It is more conducive to construction to have some understanding of this before construction. The above is what I have shared with you about the technical explanation of exterior wall painting. I hope it can help you.