What You Should Know About Interior Basement Drainage Systems

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Plumbing experts design an interior basement drainage system to collect rainwater and other liquid run-offs from the interior of a building. It typically consists of a sump in the basement wall’s bottom and pipes that carry water from the basement to an exterior outlet in a gutter. You should know essential things about interior basement drainage systems, as shown in the video, ” Basement Waterproofing – The Solution Animation.

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The interior basement drainage system aims to prevent water damage and flood damage from basement walls, flooring, and other interior surfaces. Experienced contractors set the system to catch water from a basement before it can spread throughout the building and cause water damage. This system helps lower the risk of costly flood damage when properly installed.

Also, interior basement drainage systems are passive systems. This means they rely on gravity to move the water to its final destination. Individuals should never use the system as a drain for household plumbing or other active mechanical system requiring water removal.

Moreover, these systems are typically designed with multiple redundancy features to prevent clogging and backup of water inside the system. In its most common design, a sump is placed in the lowest part of the basement wall before waterproofing is applied. Ideally, there will also be “check valves” in the piping.

In conclusion, the purpose of an internal drainage system is to prevent water damage by collecting the water and moving it beyond the walls of the building and out to an exterior gutter or downspout. Experts design these systems with features that prevent clogging and water backup. They should not be used as a point to drain household plumbing because this can lead to clogging and backup issues.


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