24/7 Emergency Hotline (289) 274-4367

Members

Offers

Exterior Basement Waterproofing

Basement water damage can lead to significant repair costs and long-term structural concerns. If left unchecked, it can weaken your home’s foundation and impact the structural integrity of interior elements. While interior waterproofing methods are helpful, exterior basement waterproofing offers added protection by stopping water before it enters your home.

Limcan Certified Heating and Air Conditioning is a reliable name for exterior basement waterproofing in Oshawa. Our goal is to keep your foundation dry and protected—preventing leaks, cracks, and moisture damage. Our certified plumbing professionals are available 24/7 to evaluate your needs and recommend the most reliable and affordable solution to waterproof the exterior of your basement.

Exterior waterproofing completed by Limcan, with a membrane sealing the lower foundation wall and a trench prepared for drainage installation.

Our Exterior Basement Waterproofing Process

To fully waterproof the exterior walls of your basement, we first need to excavate the soil surrounding your foundation. While the process may appear extensive, it allows us to do the job right. Here’s what’s involved:

Exterior Basement Waterproofing Image

1

Excavating the foundation and inspecting it for signs of existing damage.

2

Applying exterior waterproofing membranes to seal the foundation.

3

Installing a weeping tile system to effectively divert water away from the home.

4

Drainage system upgrades are completed to prevent water from collecting near your home’s foundation.

5

Final inspection of waterproofing and careful backfilling of the excavation area.

Why Exterior Basement Waterproofing is Important

Exterior basement waterproofing prevents water from ever reaching your foundation, offering a critical first line of defence. While interior waterproofing is effective at sealing cracks, reducing indoor moisture, and managing any water that makes its way inside, it doesn’t address the external causes of water intrusion, like saturated soil from rainfall and snowmelt.

Without exterior protection, groundwater can seep through foundation cracks and create leaks. Exterior waterproofing creates a sealed barrier around your home’s foundation and helps relieve hydrostatic pressure from wet soil. This significantly reduces the likelihood of leaks and structural damage.

Waterproof Membrane Application

Limcan Certified Heating and Air Conditioning’s experienced technicians start by repairing visible cracks in your foundation using durable waterproof sealants. After repairs, we apply a robust waterproof membrane and protective coatings to create a long-lasting moisture barrier that shields your foundation from groundwater and excess humidity.

Weeping Tile Repair and Installation

Our team inspects your existing weeping tile system to determine if it’s functioning correctly. If repairs are needed—or if replacement is necessary—we install a new weeping tile that efficiently channels water away from your home, reducing hydrostatic pressure that can lead to cracks and basement leaks.

Drainage Improvements

Poor drainage is one of the biggest contributors to foundation water issues. Limcan Certified’s skilled plumbers and landscape professionals assess the grading around your property and make necessary improvements to direct water away from your foundation. This reduces water pooling, keeps the soil around your home dry, and ensures lasting protection.

You shouldn’t have to worry about your foundation every time it rains. Contact Limcan Certified Heating and Air Conditioning for a waterproofed basement that brings lasting confidence.

Why Choose Limcan Certified Heating and Air Conditioning for Exterior Basement Waterproofing in Oshawa?

Experienced Waterproofing Specialists

Our licensed waterproofing experts understand the unique challenges that homeowners in Oshawa face. From fluctuating seasonal conditions to the region’s clay and loamy soils, effective waterproofing requires deep local knowledge. Our team specializes in long-term, effective waterproofing solutions tailored to Oshawa homes and their specific environmental factors.

Cutting-Edge Waterproofing Solutions

At Limcan Certified Heating and Air Conditioning, we don’t rely on outdated waterproofing materials or one-size-fits-all methods. Our team is committed to using the most advanced technologies in foundation sealing and water management to bring you industry-leading solutions tailored to your home’s needs in Oshawa.

Prioritizing Safety and Security

Since exterior waterproofing involves deep excavation near your home, the safety of your household and anyone nearby is our top priority. Our technicians follow strict safety protocols throughout the project. If indoor access is required for assessments or finishing work, we ensure it’s handled with minimal disruption and the highest regard for your family’s well-being.

Efficient, Hassle-Free, Professional Service

Our goal is to complete your waterproofing project with efficiency and professionalism. We work in a streamlined and organized manner, keeping interruptions to your daily routine to a minimum. From start to finish, we’re focused on delivering a dry, safe basement you can rely on—without unnecessary delays.

Competitive Pricing & Transparent Quotes

We believe quality waterproofing should be affordable and straightforward. That’s why we provide clear, upfront quotes with no hidden costs. As one of Oshawa’s leading basement waterproofing providers, Limcan Certified Heating and Air Conditioning ensures you understand exactly what you’re paying for, giving you peace of mind and value for your investment.

Contact us for a free quote and more information on how we can waterproof your exterior basement walls.

FAQS About Exterior Basement Waterproofing

What Are the Signs That My Home Needs Exterior Basement Waterproofing?

If your home is showing signs of moisture intrusion, you might observe the following:

  • Basement walls that feel damp or carry a persistent musty smell
  • Yellow or brown water stains, or chalky white deposits on concrete walls
  • Growth of mould or mildew in corners or on basement surfaces
  • Noticeable cracks forming along your foundation walls
  • Pooled water surrounding the foundation, especially if nearby homes remain unaffected

What Is the Difference Between Interior and Exterior Basement Waterproofing?

Though both approaches aim to keep your basement dry, they serve different purposes:

  • Interior waterproofing focuses on managing water after it enters the basement, using sump pumps and vapour barriers.
  • Exterior waterproofing stops water before it contacts your foundation by redirecting it and relieving pressure caused by saturated soil.
  • While exterior systems last longer and are more effective at prevention, they require excavation, which can make the process more intensive.

How Long Does Exterior Waterproofing Last?

When installed by the experienced team at Limcan Certified Heating and Air Conditioning in Oshawa, using premium-grade materials, exterior basement waterproofing can reliably protect your home’s foundation for more than 25 years.