How to deal with cracks in the rough wall
Cracks in rough walls are a common problem during renovation or construction, and may be caused by material shrinkage, foundation settlement or improper construction. This article will provide you with a detailed analysis of crack types, causes and treatment methods, and provide structured data reference.
1. Common crack types and causes
| Crack type | Possible reasons | degree of danger |
|---|---|---|
| hairline cracks | Material shrinkage, temperature difference changes | low |
| transverse cracks | Uneven settlement of foundation | Middle to high |
| vertical cracks | Uneven stress on the structure | in |
| oblique cracks | Shear failure or foundation problems | high |
2. Treatment method
1.Hairline crack treatment:
- Clean the surface of cracks and remove floating dust
- Fill with elastic caulk or plaster
- Polished surface smooth
2.Structural Crack Treatment:
- Ask a professional engineer to assess the structural safety
- May require grouting reinforcement or carbon fiber cloth reinforcement
- In serious cases, demolition and reconstruction are required
| Material | Applicable to cracks | Construction points |
|---|---|---|
| Elastomeric caulk | Width＜1mm | Need to be filled in layers |
| Epoxy resin | 1-5mm | Requires pressure grouting |
| carbon fiber cloth | structural cracks | Professional construction required |
3. Preventive measures
1.Prevention during construction stage:
- Make sure the material ratio is correct
- Control the maintenance time
- Avoid rapid drying
2.Routine maintenance:
- Check walls regularly
- Control indoor temperature and humidity
- Avoid violent vibrations
4. Professional advice
1. For cracks with a width exceeding 3mm, it is recommended to consult a professional structural engineer immediately.
2. Cracks in newly renovated houses may be due to normal settlement. It is recommended to observe them for 1-2 months.
3. When cracks are accompanied by deformation of doors and windows and inclination of the ground, great attention must be paid to foundation issues.
| situation | Suggested handling | Cost reference (yuan/㎡) |
|---|---|---|
| tiny cracks | DIY patching | 10-30 |
| medium crack | Professional refinishing | 50-150 |
| structural cracks | Reinforcement project | 300+ |
5. Common Misunderstandings
1. Think that all cracks are quality problems - in fact some cracks are normal
2. Simply superficially repairing structural cracks - may hide serious problems
3. Ignore the effects of seasonal changes - changes in temperature and humidity will aggravate the development of cracks
Through the above analysis and suggestions, we hope to help you correctly deal with the problem of rough wall cracks. Remember, safety comes first and always seek professional help when you are unsure about the nature of a crack.
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