Can you apply a waterproofer on an existing shower base?

The answer largely depends on the type of shower base and the specific situation. In the case of a tile or stone shower base, where a separate waterproofing membrane is typically used, it is possible to apply a waterproofer on the existing base. However, it is crucial to ensure that the base is structurally sound and free of any cracks or damage before proceeding.

For acrylic or fiberglass shower bases, applying a waterproofer directly to the surface is not recommended. These bases are designed with a specific manufacturing process that provides their waterproofing capabilities. Adding a waterproofer on top of the base may not have the desired effect and could even compromise its original design.

Considerations and Alternatives

Before deciding to apply a waterproofer on an existing shower base, there are a few important considerations to keep in mind:

1. Inspection: Thoroughly inspect the shower base for any signs of damage, cracks, or leaks. It is crucial to address these issues before applying any waterproofing product.
2. Manufacturer Recommendations: Check with the manufacturer of your specific shower base to see if they recommend or allow the application of a waterproofer. They may have specific guidelines or products that are compatible with their shower bases.
3. Professional Assessment: When in doubt, it is always a good idea to consult a professional plumber or contractor to assess the condition of your shower base and provide appropriate recommendations.

Alternative options for waterproofing an existing shower base include repairing any damage or replacing the base altogether. If the base is beyond repair or showing extensive signs of wear, it may be more practical and cost-effective to invest in a new shower base.

While it is possible to apply a waterproofer on an existing shower base in some cases, it is crucial to consider the type of base and its condition before proceeding. Proper inspection and adherence to manufacturer recommendations are essential to ensure the effectiveness of any waterproofing measures. Consulting with a professional can provide valuable guidance and help you make an informed decision about the best course of action for your shower base.