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Exterior Waterproofing

Diagram of exterior waterproofing layers around house foundation.

Exterior Basement Waterproofing in Toronto

Protect Your Foundation from the Outside In

Water around your home’s foundation is one of the biggest threats to your basement. At UPR, we provide trusted, long-lasting exterior waterproofing services across Toronto and the GTA — stopping leaks before they get inside.

Whether your basement walls are seeping, cracking, or already leaking, we use proven materials and techniques to keep your home dry and protected.

 Why Exterior Waterproofing?

Exterior waterproofing is the most effective way to protect your basement. It involves excavating around the foundation, repairing cracks, and applying waterproof barriers that stop water at the source — before it enters your home.

Ideal for:

  • Homes with repeated basement leaks

  • Cracked foundation walls

  • Poor grading or drainage around the house

  • Preventative protection during renovations or additions

 What’s Included in Our Exterior Waterproofing System

  • Excavation to the base of the foundation
    We carefully expose the foundation wall to inspect and prepare it for repair.

  • Foundation Crack Repair
    All visible cracks are sealed using hydraulic cement to restore structural integrity.

  • Aquabloc Waterproofing Application
    We apply a thick coat of Aquabloc — a professional-grade rubberized membrane that seals and waterproofs the wall.

  • Plastic Layer (Protection Layer)
    A layer of clear plastic sheet is installed over the Aquabloc for extra protection. 

  • Waterproof Membrane Application
    High-grade rubberized or dimpled membrane is applied to block moisture permanently and relieve soil pressure from the wall.
  • Weeping Tile & Filter Cloth Installation
    A new perforated drainage pipe (weeping tile) is placed at the footing and wrapped in filter cloth to carry groundwater safely away.

  • Gravel Backfill & Surface Grading
    Clean gravel surrounds the drain system, and final backfill ensures proper grading away from the foundation.

  • Sump Pump or Backwater Valve Installation (if needed)
    Additional protection against groundwater intrusion or sewer backup.

 Why Choose UPR for Exterior Waterproofing?

  • ✔️ 20+ years experience waterproofing Toronto homes

  • ✔️ Licensed, insured, and city permit-compliant

  • ✔️ Clean excavation, minimal disruption

  • ✔️ Lifetime warranty available on full systems

  • ✔️ Honest assessments and detailed quotes

 Serving All of Toronto & the GTA

We’ve completed hundreds of exterior waterproofing projects in Etobicoke, North York, Mississauga, Scarborough, and surrounding communities. Whether you live in a century home or a new build, we have the tools and experience to protect your foundation.

 Book Your Free Exterior Waterproofing Estimate Today

Don’t wait for the next big rain to find out your foundation isn’t protected. We’ll assess your situation and provide the best plan — guaranteed.

book a Free Estimate