John wrote on 26 Mar 2006:

The phrase "drain tile" is very suspicious
too. If the houses are 12 years old, there should be nothing
wrong with you drain pipes.

Drain tile is the (usually exterior) perimeter drainage system and
has nothing whatsoever to do with the drain-waste-vent system you
are thinking of. Drain tile will either flow to daylight or to a
sump.

--
Doug Boulter

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