Elevator Support Company
Request Service
Elevator Support Company
Request Service
Why elevator pits flood, what happens when they do, and how to fix it, including the right solution for your building type and water intrusion pattern.
The elevator pit sits at the lowest point of the building, often below grade, making it vulnerable to groundwater intrusion, plumbing leaks, storm drainage, and surface water. In Washington State's wet climate, pit water is one of the most common elevator-related issues we encounter.
A wet pit isn't just a code violation. Water in the pit creates immediate risks to the elevator's electrical and mechanical components, accelerates corrosion, and can trigger mandatory shutdown by an elevator inspector.
Water contact with electrical components can cause shorts, controller failures, and safety system malfunctions. These repairs are expensive and often preventable.
In hydraulic elevators, water can contaminate the fluid reservoir and the pit's hydraulic cylinder, leading to erratic operation and seal failures.
Structural components, guide rails, and mechanical parts all corrode faster in a wet environment, shortening their usable life.
Inspectors will cite standing water or evidence of water intrusion in the pit. Uncorrected violations result in mandatory shutdown.
Standing water creates conditions for mold growth, a concern both for the elevator and for adjacent occupied spaces.
The right solution depends on the source and volume of water intrusion. A qualified elevator contractor will identify the source before recommending a fix.
A sump pit and pump system installed within the elevator pit collects and removes water before it reaches critical components. Effective for moderate groundwater intrusion and storm drainage. Requires periodic maintenance to ensure the pump is operational.
A crystalline compound applied to the pit walls and floor that penetrates the concrete and blocks water migration through the substrate. Effective for seepage through concrete, not a solution for active flowing water or cracks.
For identified cracks in the pit walls or floor, polyurethane or epoxy injection seals the entry points directly. Often used alongside crystalline waterproofing for comprehensive coverage.
For severe water intrusion, exterior waterproofing, applied to the outside of the pit walls, may be necessary. This is a larger construction project but provides the most durable long-term solution when interior methods aren't sufficient.
We can assess the source of water intrusion and recommend the right solution for your situation. Contact us to schedule an evaluation.
Schedule an EvaluationRequest a free consultation to discuss your elevator service needs. Our team will assess your equipment and provide honest recommendations.