Outside Waterproofing vs. Inside Waterproofing: Which is Right for Your Home?

WATERPROOFING FROM THE INSIDE OF THE HOUSE

If you’re a homeowner, one issue that may have crossed your mind at some point is waterproofing. Whether you’re dealing with a damp basement, water infiltration, or a persistent musty odor, waterproofing is an essential step to protect your home and maintain its structural integrity. However, the decision to waterproof your home isn’t always straightforward. One of the first choices you’ll need to make is whether to opt for inside or outside waterproofing. In this article, we’ll explore the pros and cons of each method and help you find the best approach to address your specific needs.

 

THE TWO APPROACHES: INSIDE VS. OUTSIDE WATERPROOFING

Before we dive into the details, it’s essential to understand the fundamental differences between inside and outside waterproofing.

Outside Waterproofing has been the traditional method for addressing water-related issues in basements and foundations. This method involves excavating around the foundation, fixing cracks, replacing weeping tiles, and applying waterproofing products to create a barrier against moisture. While it is a comprehensive approach, it may not always be the ideal solution, as we will discuss in more detail shortly.

Inside Waterproofing, often referred to as water management, primarily focuses on protecting the interior of your home from water infiltration. It doesn’t address foundation repairs, but it effectively manages water that may enter the structure. This approach is typically recommended when outside excavation is challenging or when the basement slab is too thin to prevent water infiltration effectively.

 

PROS OF OUTSIDE WATERPROOFING

Comprehensive Solution

Outside waterproofing addresses the root causes of water infiltration. It involves fixing cracks and applying waterproofing products on the exterior, ensuring a durable barrier against moisture.

Long-term Protection

When done correctly, outside waterproofing can provide long-lasting protection against water damage.

Preventative Measure

This method not only solves existing issues but also helps prevent future water-related problems.

 

CONS OF OUTSIDE WATERPROOFING

Cost

One of the most significant drawbacks of outside waterproofing is the cost. Excavating around the foundation and performing extensive repairs can be expensive.

Disruption

The excavation process can be disruptive and time-consuming. It may involve removing landscaping, decks, or patios around your home.

Inaccessibility

In some situations, outside waterproofing may not be feasible due to limited access to the foundation.

 

PROS OF INSIDE WATERPROOFING

Cost-Effective

Inside waterproofing is generally more budget-friendly than outside methods. It doesn’t require extensive excavation, which can save you money.

Less Disruptive

The work is done on the interior, so there’s minimal disruption to your outdoor living space.

Fast Implementation

Inside waterproofing projects typically have shorter timelines, meaning you can address water issues quickly. And also prevent any future leaks, if you use the membrane system. 

 

CONS OF INSIDE WATERPROOFING

Limited Scope

Inside waterproofing primarily manages water infiltration; it doesn’t address structural issues or foundation repairs.

Not Suitable for All Situations

This method is best suited for cases where excavation is challenging or when the basement slab is too thin to protect against water.

May Not Prevent Future exterior Issues

While inside waterproofing can manage water, it may not be as effective at preventing future structural problems compared to outside methods.

 

MAKING THE RIGHT CHOICE FOR YOUR HOME

When choosing between inside and outside waterproofing, several factors come into play. It’s essential to evaluate your specific situation and consider the following:

Type of Foundation

The type of foundation your home has can influence your decision. Different foundation types may have unique vulnerabilities to water infiltration.

Accessibility

Consider how accessible the foundation is for excavation. If it’s challenging to access the exterior of your home, inside waterproofing may be the more practical choice.

Budget Constraints

Your budget will undoubtedly play a significant role in your decision-making. Outside waterproofing is often more expensive due to excavation and extensive repairs, while inside waterproofing tends to be more budget-friendly.

 

PROFESSIONAL GUIDANCE IS KEY

Based on professional experience, we recommend consulting with a licensed subcontractor or waterproofing expert to assess your specific situation. These professionals can provide tailored recommendations, taking into account your foundation type, the condition of your basement floor, accessibility limitations, and your budget constraints.

A seasoned expert will conduct a thorough inspection of your property, identifying the root causes of your water issues and recommending the most suitable waterproofing solution. They will consider all the factors discussed above to provide a comprehensive and tailored approach to your unique situation.

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Gemil Lacroix - Executive Director and Founder of G1000 Home

Gemil Lacroix

Over 20 years of experience in providing indoor and outdoor waterproofing solutions, basement lowering services, and building inspection services to a diverse range of clients. These include property managers, building owners, real estate agents, investors, and contractors. I have successfully inspected and executed thousands of basement and substructure projects across the Greater Toronto Area, and have spearheaded several high-profile commercial and industrial concrete projects.

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