Basement Waterproofing in St. Thomas, ON

Professional basement waterproofing services in St. Thomas and surrounding areas. Fully permitted, code-compliant work from Legal Basements London.

St. Thomas homeowners are increasingly turning to legal basement apartments as a way to offset mortgage costs and provide affordable housing in the community. As the Railway City continues to grow with new industrial development, rental demand is rising steadily. Our team brings the same quality and attention to detail to every St. Thomas project, handling permits, design, and construction from start to finish.

Water intrusion is the number one enemy of basement living space. Whether you’re dealing with seasonal dampness, foundation cracks, or active leaks, our comprehensive waterproofing solutions address the problem at its source. We offer both interior and exterior waterproofing systems including interior weeping tile and sump pump installation, exterior foundation membrane application, crack injection, French drain systems, and grading corrections. Every waterproofing project starts with a thorough moisture assessment to identify exactly where and why water is entering your basement. We then recommend the most effective and cost-efficient solution for your specific situation. All waterproofing work comes with our transferable warranty for lasting peace of mind.

Why Choose Legal Basements London in St. Thomas?

  • Interior and exterior solutions
  • Weeping tile and sump pump systems
  • Foundation crack injection
  • Exterior membrane application
  • Transferable warranty
  • Free moisture assessment
  • Local team serving St. Thomas and surrounding communities

Ready to get started in St. Thomas?

Call us today for a free consultation on basement waterproofing in St. Thomas.

Call 519-266-6796

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Ready to Make Your Basement Legal?

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