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Re: Foundation Waterproofing
Greg,
That photo shows a different product, however, the intent would be the same.
The top show be closed off, though.
The purpose is to create drainage channels for water which seeps/weeps through the soil to gravity drain down to the drainage channel at the bottom.
Allowing more water in at the top (with the top being left open) only adds more water to the drainage system which must then be drained away.
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