Part 1: Basic Processing Step – Check the Wall Base
When preparing walls for renovation or painting, it's essential to carefully inspect several key aspects, including hollow sounds, cracks, flatness, verticality,阴阳 angles (corner alignment), and water resistance of the putty. The wall surface should be strong enough and meet the current national standards in terms of quality and finish.
First, Check the New Wall
1. Check for hollow sounds and cracks
Hollow areas on a new wall can significantly weaken the adhesion of paint or coatings. These issues are typically identified through visual inspection, tapping with a tool, or using a hard object to probe the surface. Any hollow spots must be completely removed and repaired using matching putty or cement mortar that matches the original wall mix. This ensures even absorption and avoids visible marks after painting.
2. Surface plaster irregularities
Uneven patches on the base layer can affect the final appearance. Before proceeding with any finishing work, these areas should be sanded down to create a smooth, even surface.
3. Exposed nail heads
Nail heads protruding from the wall should be cut back and then treated with rust-resistant paint to prevent future corrosion and damage to the finish.
Second, Check the Old Wall
1. Crumbling, drips, and dust
Before starting any work, sweep the wall surface with a bamboo broom to remove loose particles and clean uneven areas.
2. Peeling paint or plaster
If parts of the old coating or plaster are peeling, they should be carefully removed to ensure a stable base for new materials.
3. Cracks
After cleaning the wall, apply different types of sizing or leveling treatments based on the size of the cracks. Small cracks may need filler, while larger ones might require more extensive repairs.
4. Oil stains or grease
For oil or grease stains, use alkaline water to scrub and rinse the area thoroughly until it is clean.
Xiao Bian concludes: The above steps outline the necessary inspections and preparations for both new and old walls before any decoration or finishing work begins. In the next part, we will explore the essential basic tasks involved in wall finishing projects.
Wall Construction, Renovation, Construction Knowledge, Masonry Project, Paint, Cement Coating, Wallpaper, Decoration Design, Wall Cabinet
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