Parallel to the "How to get expanding foam off my hands" thread, how
about tile? I used some Great Stuff a few years ago to fill the void
between the bottom of a baseboard and the tile in a bathroom. Some of
it got on the tile, and even though I wiped it off, it left a yellow
stain. It's well-cured now, of course. Is there any magic chemical
solvent that might get that off? It could be something you wouldn't
want to get on your skin, if need be.
I just recommended trying vinegar for cleaning hands but you might use
diluted muriatic (hydrochloric) acid.
Years ago I etched my basement floor with dilute muriatic acid and after
a while the sponge disintegrated.
It can take awhile to hydrolyze the polymer so you can wash it off.
Assuming it's a smooth tile surface, just use a razor blade. Same way
you clean paint off glass. No harmful chemicals needed!
If the tile is rough, you can still use a rezor blade but it will be a
lot more work.
Next time you want to seal something like this, use clear silicone
instead. Expanding foam is NOT for finish work. A local business used it
to seal some gaps in their siding. They didn't even trim off the excess,
and it's really ugly.
On 02 Nov 2015, email@example.com wrote in alt.home.repair:
The tile has kind of a pebbly texture, it's not glass-like. I've been
trying to ignore it for a few years, but as I recall, I tried attacking
it with a razor blade but didn't get very far. Have been hoping for a
I have learned that lesson. In this case, the void was actually mainly
at the edge of the subfloor and larger than would have been appropriate
for silicon caulk. I probably should have just left it alone. What I
didn't count on was that foam stuff being so damn sticky.
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