On 07/10/2010 12:48 PM, DanG wrote:
Hot tar is the old original standby. Current technology demands
cleaning the concrete, installing backer rod to control the shape
of the fill, and careful installation of one of the polyurethane
caulks. Sonneborn's NP1 is a good one, use Vulkem or SL1 if you
want to use self leveling material - your joints need to be fairly
level for these to work, it really does seek level. There are
some excellent 2 part silicone products, but the application
kettles and equipment would not be feasible for a one time use.


Just curious, do these work like silicone caulks where if you use them
once you can't go back to the old school stuff because nothing else will
adhere to the substrate?

nate

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