I would like to apply an inch of hydraulic cement to a potential problem
area on my basement wall. The wall currently has two coats of Drylok
waterproofing paint on it. Would the concrete bond to this surface or should
I try to remove the paint?
It sounds as if you are trying to stop water on the inside of the
Best practices in order:
Insure/improve positive drainage away from the structure.
Eliminate flower beds, etc along building face. Pay particular
attention to downspouts. Make sure water has a pathway off your
property by drainage swale, storm piping, etc. Sumps and pumps as
Water proofing/damp proofing on the outside of walls
Exterior french drain system at the bottom of the wall. Needs to
drain to daylight or sump. Daylight preferred if possible.
Exterior drainage plane like Enkadrain. See:
Chemical waterproofing with a crystalline product like:
Xypex, see: http://www.xypex.com /
Stop gap methods:
Interior french drains to sump
Interior water proofing.
Keep the whole world singing . . . .
DanG (remove the sevens)
I have had water though this wall on rare occasion. Several years ago I
installed a french drain and a sump pump which handles the water table
pressure I sometimes get after several days of hard rain. I also recently
re-routed my gutters through plastic pipe away from the house. I don't
expect any future problems with this wall but I am remodeling the basement
and have the wall open at this point. Thanks for you input I will take a
closer look at the Xypex products.
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