I know that most people tell me that none of them work but for the time
being I'm not going to jack hammer out the patio where I need to go
down to tar the hole from the outside. It's a small crack that leaks or
really leaches small amounts of water only when it's really teaming
outside as it is today in NY.
Is there a product that anyone likes for this I see them at Home Depot
but I don't know which one to use.
None of them work. :-)
Okay, it's true that these products *will* effectively seal a concrete
block. What's also true is that they will *not* effectively seal an entire
wall built of concrete blocks. The cute litte demos you may see at stores
with a water pump and a treated/untreated block are obviously effective for
a head of 8" of water (42 psf); but if that head gets to be 8 feet (500 psf)
outside your wall, believe me, water will either find a way through or peel
it right off the wall trying. Given the cost & effort to apply these
products properly, I'll leave it up to you as to whether or not it's worth
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