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Waterproofing Elevator Pits

Repairing an elevator pit to ensure durable waterproofing is a challenge - all the work must be done from the inside. Our specialized concrete repair methods make it possible.

This elevator pit had experienced significant deterioration, and extensive restoration work had to be done to ensure lasting waterproofing. Floor/wall cold joints (floor wall corners, which are the weakest area in the concrete surface) were repaired, all the cracks were filled, and patching was done.

Floor/Wall Corners

To repair floor/wall corners of this elevator shaft, the following steps were taken:

  1. All of the corners were cut into with a saw, and adhesive was injected.

  2. Patching material was applied, while the adhesive was still curing.

  3. Polyforce Plus Primer was painted over.

  4. Fiberglass was installed to cover the corners.

  5. Fiberglass was painted with basalt to provide additional protection.

Crack Repair

To repair cracks, our standard procedure was followed:

  1. Cracks were cleaned with a saw in preparation for repair.

  2. Cracks were filled with Polyforce Plus Adhesive (for immediate and durable monolithic adhesion).

  3. Cracks were patched with the polymer cement which makes thin patching possible.

  4. Polyforce Plus Primer was applied to ensure durable waterproofing.

Concrete Patching

Thanks to the unique qualities of our specialized products, there was no need to do extensive demolition. Our repair procedure was followed:

  1. All unsound concrete was removed.

  2. Polyforce Plus Adhesive was applied.

  3. Once the adhesive cured (after 40 minutes), concrete patching was done. For patches as thin as 5 mm, polymer cement was used.

No matter the condition of an elevator shaft (unless there is structural damage, as determined by engineers), concrete can be repaired and restored without the need to recast entire slabs.

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