How to avoid cracks after renovation?
Cracks are one of the most feared problems after renovation work. They can appear on walls, ceilings and floors, compromising not only the aesthetics of the building, but also its durability. To avoid this phenomenon, it is essential to understand the causes and apply preventive solutions. This article details best practices to ensure crack-free renovation.
1. Understanding the causes of cracks
1.1. Building movements
A building is constantly moving, whether because of the soil, climatic variations or the structure itself. These movements may cause cracks if the construction or renovation did not anticipate these natural deformations.
1.2. Poor surface preparation
If the supports are not properly prepared prior to the work, this can cause detachments and cracks. Moisture, dirt or irregularities in surfaces are often responsible for these problems.
1.3. Use of unsuitable materials
Some materials are more sensitive to cracks than others. For example, an over-rigid coating applied to a flexible support may crack under motion.
1.4. Errors in the execution of works
A lack of respect for drying times, incorrect application of coatings or improper laying of coatings can cause early cracks.
2. Precautions to be taken before renovation
2.1. Diagnosis of building condition
Before starting work, it is crucial to conduct a thorough analysis of the condition of the building. A professional may identify any structural or moisture problems that could cause cracks.
2.2. Choosing the right materials
Choosing materials adapted to the conditions of the building and its use is essential. Here is a comparison of the most common materials and their resistance:
| Material | Resistance to cracks | Remarks |
|---|---|---|
| Cement coating | Average | Sensitive to deformations |
| Lime coated | High | More flexible and breathable |
| Acrylic paint | Good | Better follow micro-movements |
| Plaster plate | Variable | Depends on mounting and joining |
2.3. Perform a good preparation of the supports
A clean, dry and non-irregular support makes it possible to optimise material adhesion and avoid cracking. This includes dust removal, degreasing and legalization of surfaces.
3. Good practices during the work
3.1. Respect drying times
Non-compliance with drying times can cause tension in materials and promote cracks. Each coating has its own grip time, which must be scrupulously respected.
3.2. Apply expansion joints
The expansion joints help to absorb the movements of the building and avoid cracking. They are particularly useful in large plaster or tile surfaces.
3.3. Use reinforcements
The addition of lattice or reinforcement strips in coatings and plastering allows for a better distribution of tension and to limit cracks.
4. Maintenance and monitoring after renovation
4.1. Monitor the appearance of the first cracks
After the work, it is essential to monitor possible micro cracks and act quickly if they appear regardless of the renovated room: bathroom, kitchen, living room...
4.2. Respond to emerging cracks
If cracks appear, identify their cause and apply a suitable solution:
- For surface microcracks: elastic paint may suffice.
- For deeper cracks: a plug with a soft coating is recommended.
4.3. Regular maintenance of the building
Regular maintenance prevents cracking. This includes leak check, water infiltration control and inspection of walls and ceilings.
5. Why use a renovation company?
5.1. A precise diagnosis
Renovation companies have the expertise to analyse crack risks and offer suitable solutions.
5.2. Implementation in line with standards
A professional knows what techniques to apply to ensure quality and sustainable work, thus minimizing cracking risks.
5.3. Saving time and serenity
By entrusting your work to an expert, you avoid errors that might be costly to correct later.
Conclusion
Preventing cracks after renovation requires a rigorous and proactive approach. By choosing the right materials, following the procedures and passing through a professional enterprise monitoring the evolution of the building, the chances of achieving a lasting result are maximized. If you want to guarantee a crackless renovation, using a specialized company remains one of the best options. 🏡✨
