hydraulic cement is what you want to use in an opening in concrete block
or cement wall.
not spray foam that is flammable and not UV protected.
(that would be the hackers way)
do it right
or just go back to sleep
solar water heater has even more issues than I
| >>> > about, there's a freakin' hole in the wall for the piping
| >>> > tank and the panel, and I can stick my fingers in it and wiggle
| >>> > around! This is a basement wall, cinder block with brick facing
| >>> > the
| >>> > exterior. What to fill the hole with? I assume probably
| >>> > similar to the firestop that I'm used to using at work for
| >>> > that
| >>> > are core drilled through concrete decks, but what exactly is the
| >>> > product that I want to buy for this? Please don't tell me I
| >>> > use concrete as it is probably way too cold for it to set up
| >>> > right now.
| >>> >
| >>> > thanks,
| >>> >
| >>> How big is the gap? When I had central AC installed once they
| >>> out a
| >>> brick, ran the smallish pipe and hose and left a fair sized hole.
| >>> able to fill it with this caustic foam that came from an aerosol
| >>> expanded.
| >> I've got big but slender hands, so it's not a HUGE gap... probably
| >> something like two 3/4" copper pipes running through a rough 2"
| > Sounds like the stuff will work, hopefully someone here knows the
| > the stuff I'm talking about because I can't remember. These may be
| > same thing though. I picked mine up at Home Depot so maybe you
| > there: