Property managers and building owners can often overlook the importance of below-grade waterproofing.

Foundations and below-ground areas in commercial buildings will face various issues over the years and even at early stages.

Thus, below-grade waterproofing will help you protect your below-ground areas against water intrusion. 

In addition, below-grade waterproofing systems are also useful for fire protection. 

In this article, you will learn the importance of below-grade waterproofing for below-ground areas in commercial buildings. 

To discover what is Below-Grade Waterproofing, click here.

Keep reading!

Types of Below-Grade Waterproofing

The primary goal of below-grade waterproofing is to protect your below-ground areas from water intrusion for as long as the building’s life.

The most common types are:

  • Positive Side Waterproofing

When the below-grade waterproofing system applies directly to the surface area that is exposed to water.

For instance, driveways, parapet walls, or outdoor decks.

  • Negative Side Waterproofing

Contrary to positive waterproofing, the system applies to the interior walls of commercial buildings. 

For instance, basements, communication tunnels, and maintenance rooms.

  • Blind Side Waterproofing

Applies particularly for those areas with space limitations, often used in new construction projects. 

However, the space limitation will require specific application techniques for full waterproofing.

For instance, building foundations and property lines encroachment.

Importance of Below-Grade Waterproofing

Below-grade waterproofing will help you protect your below-ground areas against water intrusion.

Below-Grade Waterproofing: Factors to Consider

Taking careful consideration of the specified application techniques and materials is vital to have a successful project. 

Consider the following factors before choosing the best below-grade waterproofing system:

  • Building drainage system
  • The design of the building
  • The ground slope around the foundations
  • The material that the foundations are made
  • Type of soil
  • Irrigation systems used on the property


In brief, below-grade waterproofing systems are a must.

Water will always find its way toward a small crack damaging the structure of the building. 

Thus, at the first signs of water filtrations into the below-ground areas, take immediate action.

Never ignore any potential sign of water filtration. The consequences can be disastrous.

If you are looking for a below-grade waterproofing system, contact us!