First, do a basic treatment of the old wall renovation
Wall renovation Whether it is wall paint, wall tiles or wallpaper, if you want to renovate better, you should re-process the base part of the wall. If you want to dismantle some walls, you should pay attention to the handling of the load-bearing walls.
The basic treatment of the old wall: mainly refers to the original decoration and decoration of the wall surface, generally including the removal of the original latex paint and putty layer on the wall, the original wood decoration, the removal of other original surface decorations such as wallpaper, etc. . If you only decorate the wall for one or two years, the water-resistant putty of the wall can be completely removed, and the latex paint can be repainted after grinding the wall with steel brush and sandpaper.
Basic steps for wall renovation:
| Steps to renovate the wall | ||
step | project | Key points |
| first step | Clean the wall | The old wall must be treated with a wall base before refurbishment. If the pulverization is serious, it should be completely removed. After eradication, use white cement. Originally, the wall surface was too smooth, and after the paint was removed, it was polished, and the unbonded skin was removed to facilitate the bonding of the new paint and the wall. |
| Second step | Priming | The role of the wall primer is to resist alkali and moisture, seal the substrate, protect the topcoat, and improve the texture and hiding power of the topcoat. For the renovation of the old house, the wall must be used as a primer. If the paint is directly applied, the wall will be easy to foam and mold in the future. It will be easy to change color when the sun is shining for a long time. |
| third step | Large area patching | Repairing the painted wall is relatively difficult to achieve. Therefore, it is better to repair the wall surface that has been damaged, or to select a larger area to repair as much as possible, so that chromatic aberration can be avoided as much as possible, and the quality after repair is better. |
| the fourth step | Anti-color difference | Color differences occur on the wall, which is avoided when repairing the wall. To this end, it should be noted that according to the description of the paint bucket, brushing, it is best to estimate the amount. It is important to prepare enough quantities at a time to ensure consistent wall color. |
Matters needing attention: Water-resistant putty for more than five years due to aging of materials, must be removed to the bottom of the wall during the second renovation, otherwise it will affect the construction quality of the wall latex paint and the long-term use after decoration.
The ventilation conditions of the old house are poor, and the xylene component in the diluent reacts chemically with the components in the latex paint, causing the wall to yellow. Therefore, it is necessary to strengthen ventilation. It is necessary to place several electric fans to enhance the ventilation effect.
Demolition of the old wall: While carrying out the space transformation, it is necessary to understand the characteristics of the wall of the house. The wall that cannot be dismantled in the decoration belongs to the bearing wall, and some non-bearing walls cannot be arbitrarily demolished, otherwise it will have a serious impact on the safety of the house.
How to distinguish the load-bearing wall? Generally relying on the markings on the engineering drawings, the thick solid line part in the construction drawing and the wall under the non-bearing beam in the ring beam structure are all bearing walls, and the non-bearing wall is generally marked with thin solid lines or dashed lines on the drawings. In addition, it can also be distinguished according to the thickness of the wall. Generally, the wall above 240MM is the load-bearing wall. Some walls cannot distinguish thickness, but also load-bearing walls, such as exterior walls, and walls shared by neighbors, are easier to distinguish.
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