How to prevent wallpaper from being moldy?

1. Choose Breathable Materials

When selecting wallpaper, it's essential to go for breathable materials that allow moisture to escape. Common options include non-woven fabric, wood fiber, PVC, glass fiber substrates, and cloth surfaces. Among these, PVC wallpaper is the least breathable, making it prone to trapping moisture inside. This can lead to dampness buildup, which over time may cause mold and mildew growth. Opting for more breathable alternatives helps maintain a healthier indoor environment and prevents long-term damage to your walls.

2. Keep the Wall Dry

Proper wall preparation is crucial before applying wallpaper. If you're working with new cement walls, make sure they are fully dry—ideally after 20 to 40 days of curing. It's also important to avoid using sea sand during painting or plastering, as it contains high levels of salt that can absorb moisture and create hidden water problems later on. In second-hand homes, any gaps or cracks in the wall should be filled properly before pasting the wallpaper to prevent future peeling or bubbling.

3. Pay Attention to Installation Quality

The success of your wallpaper installation depends largely on the details. While the material is important, the craftsmanship matters even more. When applying patterns, check for alignment and ensure there are no large gaps between panels. Some wallpapers may shrink slightly after drying, so it's best to avoid placing seams directly in areas exposed to wind. Taking care during the installation process will result in a smoother, more professional finish.

4. Follow Proper Maintenance Practices

After installation, proper care is key to preserving the look and durability of your wallpaper. Avoid opening windows or doors for at least 24 hours post-installation, as excessive ventilation can cause uneven drying and lead to cracks in the seams. After three days, you can gradually introduce ventilation by opening windows during the day while keeping them closed at night to protect against humidity. This helps maintain the adhesive strength and overall integrity of the wallpaper over time.

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