The official website of the City of London300 Dufferin Avenue519-661-CITY (2489)

Weeping Tile


Weeping tiles are pipes with little holes located underground around the basement foundation.  When it rains, water filters into the ground.  These pipes capture this water and take it away from the foundation walls to prevent groundwater from entering the basement.   Weeping tiles may also be referred to as foundation drains.

 

Background

In some older homes (pre 1985), the weeping tiles are generally connected to the sanitary sewer system.  Older weeping tiles could be made of clay.

In newer homes (post 1985), weeping tiles are connected to a sump pit and sump pump.  The water is then either pumped to the storm sewer or discharged to the yard.  Generally newer weeping tiles are made of plastic.

Diagram of a basement showing the loction of the weeping tile.

 

Maintenance

Check the corners of your basement regularly.  If the floor is damp and/or wet, that may be an indication that your weeping tiles may not be functioning properly and need to be repaired or replaced.

 

Why Should you disconnect your weeping tile from the sanitary sewer system?

During heavy rain events, the sewers under the street can fill up faster due to the extra water being added from the weeping tiles, and this water could potentially come back into the home if the sewer becomes overwhelmed.  This water could be clear, dirty or smelly.

If you disconnect your weeping tiles from the sanitary sewer system and connect them to a sump pit with a sump pump, you would be helping the sanitary sewer system by not adding all that extra water.  It is also noted that disconnecting the weeping tiles from the sanitary sewer system allows you to add a Backwater Valve.

You may not have a basement flooding problem, but you may be contributing to the extra flows causing your neighbour(s) to have a flooded basement.  Likewise, your neighbour(s) could be contributing to the basement flooding in your home.

 

When the Weeping Tiles are Connected to Sanitary Sewer

The City of London would like to remove all the rain water and snow melt from the sanitary sewer system but what happens when it rains and your weeping tile are connected to the sanitary sewer system?

  • Rain water gets absorbed into the ground
  • This water finds its way to your weeping tiles
  • Your weeping tiles are connected to the sanitary sewer, which sends all this water to the sewers
  • Sewers fill up faster with all this extra water
  • Sewers could become overwhelmed and water can back up into your home.

 

When the Weeping Tiles are Connected to a Sump Pump

What happens when it rains and your weeping tile are connected to the sump pump?

  • Rain water gets absorbed into the ground
  • This water finds its way to your weeping tiles
  • Your weeping tiles are connected to the sump pit and sump pump
  • The sump pit fills with water
  • Your sump pump turns on
  • Water is pumped out of your home to the ground surface or the storm sewer
     

Weeping tile prior to being installed.Weeping tile when it is installed along the basement footings.

 

 

 

 

 

 

 

 

 

Plastic weeping tile with filter cloth over it.                           Trench adjacent to foundation with

The filter cloth prevents silts from getting                             weeping tiles installed under the

into the pipe and clogging it.                                                   gravel.

 

Last modified: