[Greenbuilding] Foundation weatherproofing

Bob Klahn Home-NRG at dnaco.net
Fri Apr 15 15:08:32 PDT 2011


By "weeping tile", do you refer to a buried exterior drainage tile, or 
does this refer to the interior perimeter drain tiles?  Down here in 
Ohio, the latter are called French drains and are problematic (to be 

If it's the exterior version, that approach seems pretty good.  Be sure 
the tile is fabric wrapped to exclude "fines" , keeping them from 
filling it over time.

One other twist that struck me as inspired was to add a screw capped 
upward leg to the drain tile, at a corner opposite the outlet.  This was 
ended below the surface (so it wouldn't impede mowing) but marked so the 
tile could be reamed if a clog developed.

I hope this is useful.  Locally, we have a high water table problem but 
nothing like your winters.

Bob Klahn

On 4/15/2011 4:02 PM, Corrinne Harol wrote:
> Hi All,
> I've got a 1949 bungalow in Edmonton, Alberta that has a wet basement. The
> standard fix involves weeping tiles, a sump pump, crack repair,
> waterproofing the foundation from the outside, a vapor barrier. They also,
> install insulation board which is rigid, grooved on the house side, smooth
> on the soil side, and which adds R-9.6 insulation value. So my question is
> whether the list has another better suggestions about either insulation or
> water management in this climate. Apparently Edmonton foundations are
> notoriously wet and fail often, and my neighborhood in particular has
> problems as it is the site of an ancient glacier lake, and water remembers.
> Any thoughts at all would be very much appreciated.
> Cheers,
> Corrinne
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