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Designing an Effective Solution for Elevator Pit Waterproofing

Updated: May 9

When requested to provide waterproofing specifications for an elevator pit in a high-rise residential condo situated on Eglinton Ave. W in Toronto, Tenera conducted a detailed site inspection, based on which application design was given to the client and to the contractor whose work was supervised and certified.

Repairing Active Leaks

To swiftly and effectively stop active leaks and prepare for subsequent repair work, a step-by-step sequence must be followed. The contractor was instructed to apply polymer cement to the affected area and cure it using a torch. Following this, an adhesive coating was applied and dried once more with a torch before the application of a waterproofing membrane layer. This meticulous process ensures swift intervention and primes the surface for further repair work, ensuring the overall efficacy and longevity of the waterproofing solution.

Crack Repair

Addressing cracks necessitates a systematic approach. Contractors are tasked with opening up the cracks using saws or chipping guns, removing any loose debris to facilitate adhesion for subsequent materials. After the application of an industrial-strength adhesive, specialized crack-filling material is utilized to seal and fill the cracks, restoring slab integrity and preventing further deterioration. This methodical process ensures thorough and enduring crack repair, guaranteeing the durability and stability of the treated surface.


Cold Joint Repair

Cold joint waterproofing is indispensable for preserving the structural integrity and longevity of concrete structures. The process entails meticulous cleaning of joints to eliminate any debris or loose material hindering adhesion. Following this, joints are coated with adhesive to enhance bonding before a continuous patch is installed at a 45-degree angle, reinforcing and stabilizing the joint. To further fortify the repair and prevent future water penetration, a fiberglass membrane is applied over the joint, with an upturn on the wall surrounding the elevator shaft perimeter. This comprehensive approach effectively seals the cold joint, minimizing the risk of water infiltration and enhancing the structure's durability.

Membrane Installation

As the final step in elevator pit waterproofing, a polyaspartic waterproofing membrane is meticulously installed according to specifications. This membrane is applied over the elevator pit floor, with an upturn on the wall around the entire elevator shaft perimeter, covering the fiberglass upturn. It provides a robust solution for waterproofing and safeguarding the elevator shaft environment. The polyaspartic membrane creates a seamless and durable barrier that effectively seals the floor and walls, preventing water infiltration and corrosion in the demanding conditions typically encountered in elevator shafts. Its rapid curing properties enable quick installation and minimal downtime, ensuring a prompt return to service.

By incorporating polyaspartic membranes, elevator shafts benefit from improved durability, reduced maintenance needs, and an extended service life, ultimately enhancing the overall safety and reliability of the elevator system.

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