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Exterior Basement  Waterproofing in Toronto

Exterior Basement Waterproofing in Toronto: Permanent Protection for Your Foundation

Protecting your home from ground moisture is not just about peace of mind — it’s about preserving the integrity and value of your property for decades. At Leaquida Waterproofing, we specialize in professional exterior basement waterproofing services in Toronto, providing long-lasting solutions tailored to the structure, soil conditions, and specific needs of your home.

Whether you’re dealing with foundation cracks, pooling around your walls, or just being proactive before signs of trouble appear, outside basement waterproofing is the most thorough and effective method to shield your property.

Why Exterior Waterproofing is the Gold Standard

When it comes to defending a foundation, internal methods only manage symptoms. Exterior foundation waterproofing, on the other hand, addresses the root cause by sealing and protecting the walls from the outside. This means your basement stays dry even during the heaviest downpours or spring thaw.

External basement waterproofing involves excavating the soil around your home’s foundation, inspecting the wall surface, applying an exterior basement sealer or foundation membrane, and improving drainage to divert moisture away permanently.

This proactive approach is particularly vital in Toronto, where soil composition and seasonal moisture levels can significantly impact foundations. Waterproofing basement walls from outside not only eliminates current issues but helps prevent future damage that could cost thousands.

Why choose us?

  • Respectful
    appearance
  • Up-front
    pricing
  • No overtime
    charge
  • We are available on holidays, evening and weekends
  • Quick and
    efficient service
  • 24/7 customer
    service

We are the best in the field!

  • Fully licensed

  • Transparent process

  • Insured

  • Affordable

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    What Does the Process Involve?

    Professional exterior basement waterproofing isn’t a one-size-fits-all service. Each project is carefully assessed and customized, but typically involves these key steps:

    1. Excavation – We dig around the affected area to expose the full foundation wall.
    2. Foundation Repair – All cracks or voids are cleaned, filled, and sealed using industry-approved techniques.
    3. Application of Membrane and Sealer – A high-quality foundation sealer for exterior use is applied, followed by a dimpled membrane or other protective barrier.
    4. Drainage Installation – A new weeping tile system is installed to carry water away from the foundation and into a sump pit or storm drain.
    5. Backfilling and Grading – We use gravel and clean soil to backfill, ensuring proper surface grading to divert rainwater.

    This thorough process ensures your home is protected with both physical and hydrological barriers. From waterproofing for outside walls to installing proper footing drains, every step is handled with precision.

    Types of Exterior Waterproofing Systems

    Depending on your foundation type, property layout, and local conditions, our team may recommend one of the following:

    • Rubberized Coating Systems – Flexible and seamless, these are ideal for uneven surfaces or block walls.
    • Cementitious Waterproofing – Commonly used for concrete block walls outside, especially where surface bonding is required.
    • Exterior Membranes (Peel-and-Stick or Spray-Applied) – Provide long-term resilience and work well on poured concrete foundations.
    • Drainage Board Systems – These reduce hydrostatic pressure and prolong the life of the exterior waterproofing material.

    Before applying any of these materials, we assess soil saturation, wall composition, and slope. Our solutions go far beyond surface protection — we provide lasting defense at every layer.

    exterior basement waterproofing in Toronto

    When Should You Consider Exterior Foundation Waterproofing?

    Not all signs of moisture are dramatic. If you’re noticing damp smells, minor leaks after storms, or white staining (efflorescence) on your basement walls, these could be early warnings of external moisture intrusion.

    More serious indicators that it’s time to call exterior waterproofing contractors include:

    • Cracking in the foundation wall
    • Visible mold growth at floor or wall joints
    • Pooled water near the perimeter of your home
    • Soft or shifting soil next to foundation walls
    • Peeling paint or bubbling drywall in basement rooms

    Even homes without visible leaks can benefit from preventative exterior house waterproofing, especially in older Toronto neighborhoods where original construction didn’t include modern barriers.

    Reviews about us

    Quick, professional and at very reasonable cost. No hidden costs. The installation was complicated as the municipal sewage backed up when the pipe was cut, but the team did not complain despite working in harsh conditions.

    Lev, Whitby Vacancy

    Leaquida Waterproofing was prompt, courteous and thorough. We would recommend to anyone. We had a backwater valve installed. I called Sunday, got a quote Monday, has the work done the following Monday (including issuing of building permit).

    Trisha Grant Vacancy

    They have installed sump pump system in our house. They were very much on time and during the installation they have worked very clean. You may rely on their advises. Highly recommended.

    Burçin, Toronto Vacancy

    Exterior vs. Interior Waterproofing: What’s the Difference?

    While interior solutions like drainage mats and sump pumps offer temporary relief, they don’t stop moisture from reaching your foundation. Exterior basement waterproofing is the only method that protects your home at the source — outside the structure.

    Let’s compare:

    Feature Interior Waterproofing Exterior Waterproofing
    Stops moisture before entry ✖ No ✔ Yes
    Repairs foundation cracks ✖ Rarely ✔ Always
    Involves excavation ✖ No ✔ Yes
    Long-term protection ✖ Depends ✔ Guaranteed with proper materials
    Ideal for finished basements ✔ Quick and clean ✖ May require landscaping restoration

    For homeowners investing in property longevity and value, waterproofing foundation from outside offers unmatched security. It’s especially vital if your home has a finished basement, rental suite, or storage area vulnerable to long-term damage.

    Exterior Basement Waterproofing Cost in Toronto

    The cost to waterproof basement from outside can vary significantly depending on site conditions, wall length, accessibility, and material selection. However, most homeowners in Toronto can expect the following ranges:

    • Typical Range per Linear Foot: $90–$250
    • Full Foundation (Average Home): $8,000–$20,000
    • Isolated Wall Repair (1-2 Walls): $3,000–$7,500
    • Exterior Foundation Waterproofing Cost per Project: Depends on excavation depth, soil type, and drainage upgrades

    Factors affecting exterior basement waterproofing cost:

    1. Access: Tight yards or concrete patios require more effort to excavate.
    2. Foundation Material: Concrete block and stone require more prep and sealing than poured concrete.
    3. Depth: Deeper foundations increase labor and safety requirements.
    4. Drainage Upgrades: Installing new weeping tile or sump systems adds cost — but also long-term value.
    5. Add-ons: Some clients opt for exterior wall insulation or downspout extensions during waterproofing.

    At Leaquida, we offer honest estimates, transparent pricing, and no hidden fees. Every quote includes a full breakdown of the work and materials. We’ll help you understand the investment and how it protects your home for decades to come.

    Why Choose Leaquida for Exterior Waterproofing in Toronto?

    Not all exterior waterproofing contractors deliver the same level of expertise, precision, or service. Here’s what sets Leaquida apart:

    • Specialization – We focus specifically on basement and foundation waterproofing. It’s not a side service — it’s our core expertise.
    • Local Knowledge – Our team understands the specific soil types, rainfall patterns, and drainage challenges unique to Toronto neighborhoods.
    • Premium Materials – We only use tested and certified products for exterior concrete waterproofing, ensuring resilience and warranty compliance.
    • Clean Work Sites – We treat your property with respect. Landscaping is preserved or restored whenever possible.
    • Warranty-Backed Work – Our exterior waterproofing services come with a transferable warranty so you can sell your home with confidence.

    We don’t just seal cracks — we build peace of mind into every foundation.

    waterproofing basement walls from outside

    How Long Does Exterior Waterproofing Take?

    The timeline for outside basement waterproofing depends on how many walls are being treated and the difficulty of excavation. Here’s what most clients can expect:

    • Single Wall: 1–2 days
    • Two to Three Walls: 3–5 days
    • Full Foundation: Up to 7 days

    Additional time may be needed for:

    • Concrete removal and restoration
    • Extensive crack repair or foundation reinforcement
    • Permitting delays (in rare cases)

    Leaquida provides you with a clear project schedule, daily updates, and minimal disruption to your routine.

    Serving All of Toronto and Surrounding Areas

    We proudly serve homeowners across Toronto, including Etobicoke, North York, Scarborough, and East York. If you’ve been searching for “exterior waterproofing companies near me,” Leaquida Waterproofing is your trusted local expert — always ready to inspect, advise, and deliver quality results.

    Book a Free Exterior Waterproofing Estimate Today

    Protecting your home starts with a simple step: understanding the current condition of your foundation. At Leaquida, we offer no-obligation inspections and clear recommendations based on your home’s unique needs.

    Whether you’re looking for full exterior house waterproofing, targeted repairs, or advice on waterproofing exterior basement walls cost, our specialists are here to help. Get the answers — and the protection — you need from Toronto’s exterior waterproofing experts.

    📞 Call us today +1-416-992-5858 or fill out our contact form to schedule your assessment.

    Title step section

    • check iconCLOGGED OR BROKEN WEEPING TILE
    • check iconWATER TABLE OR STREAM
    • check iconFOUNDATION WALL CRACK
    • check iconWINDOW WELL
    • check iconFLOOR WALL JOINT
    • check iconFLOOR DRAIN
    • check iconOVER TOP OF FOUNDATION WALL
    • check iconDOWN STACK / SEWER DRAIN
    • check iconSUMP PUMP AND WELL
    • check iconFLOOR CRACK
    • check iconFOUNDATION WALL SEEPAGE

    FAQ about Exterior Basement  Waterproofing in Toronto

    • What is exterior basement waterproofing and how does it work?
      Exterior basement waterproofing is a method that involves sealing and protecting your foundation walls from the outside. It requires excavation around the perimeter of your home to expose the foundation. From there, professionals clean and repair cracks, apply a foundation sealer or waterproof membrane, install drainage (such as weeping tile), and then backfill with gravel and soil. This process ensures that water never reaches your basement walls, keeping your home dry and structurally sound.
    • How much does exterior waterproofing cost in Toronto?
      The cost to waterproof a basement from the outside typically ranges from $90 to $250 per linear foot, depending on factors like foundation depth, access difficulty, wall material, and drainage needs. For a full foundation, homeowners may spend between $8,000 and $20,000. Costs may rise if additional services like sump pump installation or patio removal are required. Every project is unique, so it's best to request a detailed estimate.
    • How long does it take to waterproof a basement from the outside?
      Most exterior basement waterproofing projects in Toronto take 2 to 7 days. A single wall can usually be completed in 1–2 days, while a full foundation may take up to a week. Factors that affect duration include weather conditions, excavation depth, number of walls, and any obstacles like decks or walkways. Your contractor should provide a detailed timeline before work begins.
    • Is exterior waterproofing better than interior systems?
      Yes, exterior waterproofing is considered the most effective long-term solution. It addresses the source of the problem by preventing moisture from ever entering the foundation, while interior systems simply manage water after it has entered. Exterior methods protect your foundation from damage, reduce mold risk, and often increase property value.
    • Do I need exterior waterproofing if I already have a sump pump or interior drain?
      If you're still experiencing leaks, moisture, or mold, it may be a sign that your interior system isn’t enough. Interior drainage systems manage symptoms — not causes. Exterior waterproofing provides full protection and is often recommended for long-term structural preservation, especially in older homes or where groundwater pressure is high.
    • Will exterior waterproofing damage my landscaping?
      Some disruption is unavoidable due to excavation, but experienced contractors take steps to minimize damage. At Leaquida, we carefully remove and replace soil, grass, or interlocking stone. In many cases, landscaping can be restored to its original condition or better after the project is complete.
    • Does Leaquida provide a warranty on exterior waterproofing services?
      Yes. We offer a transferable warranty on all exterior waterproofing projects, covering both materials and workmanship. Our team uses high-performance foundation sealers and membrane systems that are designed to last for decades. You’ll receive all documentation and peace of mind that your investment is protected.
    • Is a permit required for exterior basement waterproofing in Toronto?
      Generally, a permit is not required for exterior waterproofing unless the project involves altering city drainage connections or structural changes to your foundation. If a permit is necessary, Leaquida will handle all applications and compliance steps on your behalf.

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    What we do?

    • check iconCLOGGED OR BROKEN WEEPING TILE
    • check iconWATER TABLE OR STREAM
    • check iconFOUNDATION WALL CRACK
    • check iconWINDOW WELL
    • check iconFLOOR WALL JOINT
    • check iconFLOOR DRAIN
    • check iconOVER TOP OF FOUNDATION WALL
    • check iconDOWN STACK / SEWER DRAIN
    • check iconSUMP PUMP AND WELL
    • check iconFLOOR CRACK
    • check iconFOUNDATION WALL SEEPAGE