159 Chisholm Avenue

In my previous post Foundation wall water proof, you can see that the weeping tile is installed. The weeping tile which is a 4″ perforated pipe has white fabric sock around it to prevent sediment from entering the weeping tile. Then the weeping is buried in a pile of 3/4″ clear gravel. Gravel also filters sand and sediments from water and it provides a good drainage backup to the weeping tiles in case the weeping tile system is clogged. Now to maintain that good drainage property of the gravel, it is a best practice to lay a layer of filter fabric around the gravel so that sediments doesn’t enter the gravel layer and therefore maintain that good drainage of the gravel layer.In fact the ideal installation would be lay the filter fabric down first, and put a thin layer of gravel down. Then put the weeping tile and pile a thick layer of gravel on top. And finally wrap the filter fabric around the gravel before back fill.

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