A1 Property Services

What You Need to Know About Below Grade Waterproofing

The successful construction of commercial property includes many facets, from planning to design to the actual building process. It should also include below grade waterproofing.

Below grade waterproofing is a critical part of ensuring a good envelope for proper waterproofing of the foundation walls of the structure below ground level. It’s essential for keeping the below grade areas leak-free.

1. Why Below Grade Waterproofing?

Modern commercial buildings often include spaces beneath ground level such as parking, maintenance storage, utility rooms, and more. Effective waterproofing and water management techniques work hand-in-hand to ensure the structural integrity of the building’s foundation.

Without proper waterproofing, you risk major flood and other water deterioration issues that can become costly in the future.

2. Types of Below Grade Waterproofing

There are five types of below grade waterproofing:

  • Pre-applied waterproofing – Pre-applied waterproofing systems are designed to prevent water migration under the building’s structure. They’re designed to tie into pile caps and not to pilings.
  • Bentonite – Bentonite waterproofing ties into the structure’s pilings and require compressive strength to perform at their best.
  • Self-adhering sheet waterproofing – This type of below grade waterproofing typically utilizes rubberized asphalt technology and is the preferred method for waterproofing retainer walls.
  • Spray-applied or rolled waterproofing – Spray applied waterproofing usually features rubberized asphalt technology, urethane, or elastomeric.
  • Structural Epoxy Injections – This type of waterproofing helps to seal and stop foundation leaks.

3. Positive and Negative Side Waterproofing

A couple of terms you’ll see about below grade waterproofing are positive and negative side waterproofing.

Positive side waterproofing is done on the outside surface of the foundation – the surface closest to the soil – and includes sheet systems, fluid-applied membranes in conjunction with bentonite clay and an integral fabric.

Negative side waterproofing takes place on the inside surface of the foundation and redirects water after it penetrates the foundation. Positive side waterproofing is generally considered more effective, while negative side technology is best used in conjunction with positive-side methods.

Also, positive side waterproofing is usually advantageous because it’s in a more visible spot. Any defects in the waterproofing membrane are easier to inspect than with negative side methods.

A-1 Property Services is your go-to choice for below grade waterproofing of your Miami-area commercial structure. Don’t settle for less than the best.

What You Need to Know About Below Grade Waterproofing