top of page

Permanent Waterproofing Solutions for Elevator Pits

When Tenera was approached to provide specifications for elevator pit waterproofing in a low-rise commercial building, a site inspection was carried out in order to define the full scope required. As a result, the repair method specked included crack repair, patching, cold joint waterproofing, and a waterproofing membrane application.

Repair Method

Crack Repair

For the crack repair procedure, the cracks should be opened up using a saw or a chipping gun, ensuring that any loose materials are removed for a clean substrate. An industrial-strength adhesive should be applied to the exposed surfaces to enhance adhesion. Following adhesive application, a specialised crack-filler material should be used, with the cracks carefully filled and sealed to restore slab integrity and prevent further degradation. This methodical approach ensures thorough and durable crack repair, guaranteeing the longevity and stability of the repaired surface.


For the patching process, any loose material should be removed using a chipping gun, ensuring a clean substrate. The surface should then be coated with an industrial-strength adhesive to facilitate adhesion. Subsequently, a concrete patch should be installed, completing the repair procedure. This methodical approach ensures thorough and effective patching, restoring the integrity of the surface.

Cold Joint Repair

Cold joint waterproofing is a critical procedure aimed at ensuring the structural integrity and longevity of concrete structures. The process begins by chipping out the joints to thoroughly clean them, removing any debris or loose material that may impede adhesion. Subsequently, the cleaned joints are coated with adhesive to enhance bonding. A continuous patch is then installed along the joint at a 45-degree angle, providing reinforcement and stability. To further strengthen the repair and prevent future water ingress, a fibreglass membrane is applied over the joint with an upturn on the wall around the entire perimeter of the elevator shaft. This comprehensive approach effectively seals the cold joint, mitigating the risk of water infiltration and enhancing the durability of the structure.

Membrane Installation

As the final step of elevator pit waterproofing, a polyaspartic waterproofing membrane was installed, as specified by us. Applying a polyaspartic membrane over the elevator pit floor with an upturn on the wall around the entire elevator shaft perimeter, covering the fiberglass upturn, offers a robust solution for waterproofing and protecting the elevator shaft environment. The polyaspartic membrane forms a seamless and durable barrier that effectively seals the floor and walls, preventing water infiltration and corrosion in the harsh conditions typically found in elevator shafts. Its rapid curing properties allow for quick installation and minimal downtime, ensuring swift return to service.

Additionally, polyaspartic coatings exhibit exceptional resistance to abrasion, chemicals, and UV exposure, making them ideal for high-traffic areas subjected to heavy wear and tear. By utilising polyaspartic membranes, elevator shafts benefit from enhanced durability, reduced maintenance requirements, and prolonged service life, contributing to the overall safety and reliability of the elevator system.

Learn more about our solutions for utility rooms by visiting this page:


bottom of page