How to Fix Cracked Paint: Cause Analysis and Practical Solutions
Dry paint is a common problem in home decoration and industrial painting. It not only affects the appearance, but also may reduce the protective performance of the coating. This article will combine the hot topics and user concerns on the Internet in the past 10 days, analyze the causes of paint drying and cracking, and provide structured solutions.
1. Common causes of paint drying and cracking
| Cause classification | Specific performance |
|---|---|
| Construction environment issues | Temperature is too high or too low, humidity is too high, ventilation is poor |
| Paint quality issues | Expired paint, improper dilution ratio, incompatible primer |
| Improper handling at the grassroots level | There is oil, dust or old paint on the surface that has not been cleaned |
| Construction technical issues | The coating is too thick and the drying time interval is not followed. |
2. Practical methods to solve dry and cracked paint
1.Optimize the construction environment
Ensure that the construction environment temperature is between 5-35℃ and the humidity is below 85%. Avoid direct sunlight in hot weather, and add driers in low-temperature environments.
2.Choose quality paint
| Paint type | Applicable scenarios | Anti-crack recommendations |
|---|---|---|
| Water-based paint | Interior walls and furniture | Add elastic additives to enhance toughness |
| Oil-based paint | Metal, wood | Strictly control the diluent ratio |
3.Treat the base thoroughly
The surface needs to be polished and cleaned before construction, and cracks in the old paint layer need to be completely removed. For porous materials (such as wood) it is recommended to apply a primer to seal them first.
4.Standardize construction process
| steps | Operational points |
|---|---|
| First coat of paint | Thin coating, thickness no more than 0.1mm |
| drying interval | Water-based paint 2-4 hours, oil-based paint 8-12 hours |
| final care | Avoid friction or contact with chemicals for 7 days |
3. Repair plan for cracked paint
1.minor cracks: Use fine sandpaper to polish and then partially touch up the paint;
2.Severe cracking: Thoroughly remove the old paint layer and reapply primer + topcoat;
3.special material: Wooden surfaces can be treated with cracks using wood caulking agent first.
4. Recent hot and related topics
According to network-wide data monitoring, issues frequently discussed by users recently include:
- Comparison of anti-cracking properties of environmentally friendly water-based paints
- Paint construction skills during the rainy season
- Cost of repairing cracked art paint
Summary: To solve the problem of paint dryness and cracking, we need to start from three aspects: environment, materials and technology. Prevention is better than repair, and standardized construction procedures and quality material selection are key. If cracking has occurred, choose the corresponding repair plan based on the severity.
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