Professional Under-Tile Waterproofing in San Diego County

Protect Tile Installations with Industry-Approved Waterproof Membranes

Under-tile waterproofing plays a critical role in protecting tile and stone installations from moisture intrusion beneath the finished surface. When installed correctly, waterproof membranes help manage moisture before it reaches the substrate, supporting the longevity and performance of the finished system.


We install professional waterproof membranes beneath tile assemblies, providing a reliable barrier between the substrate and finish materials. This service is designed to support tile installations—not replace them—and is performed as part of a properly planned coating or tile system.


Call (619) 368-0249 to discuss under-tile waterproofing options.

Where Under-Tile Waterproofing Is Used

Our under-tile waterproofing systems are commonly installed in:


  • Showers and wet areas
  • Balconies and elevated decks
  • Patios and exterior tile surfaces
  • Pool surrounds


These membrane systems are installed beneath tile or stone finishes to help manage moisture where surface exposure is expected.

A partially tiled rooftop with white, tan, and brown tiles, several buckets, and two decorative pots.
A rooftop patio with a white wall and plants in the background, gray painted floor, and a large pot.

How Does Under-Tile Waterproofing Work?

Under-tile waterproofing begins with proper surface preparation, followed by the application of a waterproof membrane designed to integrate with tile systems.


Our process includes:


  • Surface preparation to ensure proper membrane adhesion
  • Application of approved waterproof membrane systems (including CIM systems where specified)
  • Compatibility planning with tile, stone, and finish materials
  • Installation performed to manufacturer specifications


These membranes create a continuous barrier beneath the finished surface, supporting long-term performance when paired with properly installed tile systems.

Compatible With Tile & Finish Systems

Our under-tile waterproofing membranes are designed to work with:


  • Cementitious tile installations
  • Epoxy-based finish systems
  • Interior and exterior tile applications


Membrane selection is based on the application, substrate, and finish system to ensure proper compatibility and performance.

What Sets Our Under-Tile Waterproofing Apart

  • Membrane-focused service: We install waterproof membranes as part of a broader coating or tile system
  • Approved materials: Systems selected based on manufacturer guidelines and application requirements
  • Proper integration: Designed to work beneath tile, not replace surface finishes
  • Professional installation: Applied with attention to detail and proven techniques
  • Clear scope: No unrelated waterproofing, excavation, or drainage services


This service is intended to support high-quality tile and coating installations—not act as a standalone waterproofing solution.

Schedule Under-Tile Waterproofing Services

If your project requires professional waterproof membranes beneath tile or stone finishes, we’re ready to help.


Contact us today to schedule under-tile waterproofing services anywhere in San Diego County.