SPC Wall Panels with Backside PVC Film: No More Damp Problems

SPC wall panels, thanks to their excellent performance, are widely used in bathroom paneling. These panels not only provide waterproof and moisture-resistant protection but also offer a high level of aesthetic appeal. However, many customers still express concerns during selection, worrying that panels installed in damp environments may experience moisture seeping in from the back.

Moisture-Resistant Design of SPC Wall Panels

1. Surface Protection

SPC wall panels are treated with UV coating on the surface, which improves wear resistance and scratch resistance while effectively blocking moisture penetration. In addition, the Click system on the panel edges ensures tight interlocking during installation, preventing seams from becoming channels for water vapor. Together, these two features provide nearly 100% waterproof protection for both the surface and seams, ensuring reliable long-term use in wet environments.

Close-up of SPC wall panels showing UV-coated surface for wear and moisture resistance and a Click system edge that tightly interlocks to prevent water seepage in seams

2. Backside Moisture Barrier

To counteract the effects of long-term wall dampness, SPC wall panels are typically hot-pressed with a layer of PVC film on the back, serving as a moisture barrier. This film effectively blocks moisture from the wall from infiltrating into the core, preventing swelling, deformation, or mold growth. Even in high-humidity spaces such as bathrooms, this backside protection layer offers an extra level of safety for the panels.

Back view of an SPC wall panel showing the hot-pressed PVC film layer that blocks wall dampness, preventing swelling, deformation, and mold growth even in humid bathrooms

3. Full Adhesive Installation

Beyond the inherent waterproof and moisture-resistant design, installation techniques can further enhance performance. Using the full-spread adhesive method allows the panels to bond tightly to the wall surface, minimizing gaps and voids. This not only strengthens the overall stability of the installation but also enhances sealing, significantly reducing the risk of moisture seepage and ensuring long-term stability in humid environments.

Installer applying full-spread adhesive to fix SPC wall panels tightly to the wall surface, reducing gaps and improving waterproof stability in humid environments

Conclusion

SPC wall panels feature UV coating, Click system, and a backside PVC moisture barrier, all of which effectively block water vapor and prevent dampness. When combined with the full-spread adhesive method during installation, they provide even greater sealing and stability. Therefore, when used in bathrooms and other humid environments, SPC wall panels can be relied upon to remain free from dampness issues.