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Elastomeric Concrete Systems for Expansion Joint Waterproofing

When it comes to parking decks, waterproofing membranes in combination with elastomeric concrete provide a lasting solution for expansion joint waterproofing. Such systems are designed to absorb impact loads and provide a continuous seal even at expansion joint transitions and intersections.

Three different expansion joint profiles are available, depending on the requirements: ME Series is composed of a multi-cell profile that follows ADA guidelines and is pedestrian-friendly; MM Series consists of a simple ribbed profile – an ideal option for areas where the slabs are split or where the existing joints require rehabilitation; MX Series has a two-cell web-like design which allows for increased movement.

ME Series Installation

The work done at a mid-rise residential building on Northern Heights Dr. in Richmond Hill, required an ME Series expansion joint installation and waterproofing. After a different contractor had installed the joints, one of our crews went in to do the waterproofing.

The first step was to weld at the expansion joint corners – once finished, out work was inspected and approved by engineers. We then proceeded to install the rubber membrane inside the joints by using crowbars (without damaging the joints).

As with any other waterproofing installation, the first step is to prepare the substrate – the surface must be clean, to ensure proper bonding. It was then coated with a specialised primer (a bonding agent). The required parking series elastomeric concrete was installed next.

Expansion Joint Injection

Another way to repair expansion joints – ceiling, wall, or floor – is by doing a polyurea-based injection which can be done from the negative side (from inside a parking garage) bringing great savings, since no excavation over a podium roof and existing membrane removal are necessary.

Learn more about this type of repair by visiting this page:

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