WATERPROOFING CONCRETE FOUNDATION WALL

[PT99]

I want to provide the best possible solution for water-proofing an existing concrete foundation wall that is leaking. I was thinking of Xypex Concentrate, vs more traditional asphaltic products, or maybe both. Any recommendations. Is Xypex more costly? Most jobs I see are with asphaltic type products, but I dont want to hear about it again. Area is small, its the excavation that really costs. Of course, any issues with the concrete wall will be addressed first as well as new flashing. I am only seeing the problem from the cellar.

 

[Teguci]

Adhered bentonite sheet waterproofing with drainage board down to daylighted drain pipe wrapped in filter fabric with stone backfill with sloped clay cap soil near the top.

 

[oldestguy]

At least this will work.
Adhered bentonite sheet waterproofing
You may not need the drains, depending on site conditions.

 

[Brad805]

You need to know how much reinforcing is in the wall if you want to use Kryton or Xypex options. When we were investigating this for a project we were told the Kryton T1/T2 system was rated to work for cracks up to 0.5mm. I have seen it used in much worse applications, and it was reported to work, but....

"Krystol T1 & T2 is an effective waterproofing system for rigid concrete structures only and may not reliably seal cracks and joints that experience constant or repeated movement. Consult a Kryton representative for project specific recommendations before specifying Krystol in elevated structures.

Krystol T1 & T2 is not a decorative coating and will change the color of the surface that it is applied to. Consult your Kryton representative for advice regarding applications with specific aesthetic requirements."

 

[PT99]

Did I mention that this building abuts a New York City subway built in the 1920's. So there might be some some earth movement every few minutes.