How to get expanding foam off tile??

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.

A razor blade if it is a glazed tile, good luck if it is not. Might try a bit of MEK, but I have my doubts.

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, snipped-for-privacy@none.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 magic elixir.

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.

On 02 Nov 2015, Oren wrote in alt.home.repair:

That sounds like a possibility. I'll check it out.

On 02 Nov 2015, snipped-for-privacy@snyder.on.ca wrote in alt.home.repair:

"MEC"?? Are you referring to "Butanone, also known as methyl ethyl ketone (MEK)"? Where could I get that?

Might want to check on that. Sulf and chlor are not the same chemical.

- . Christopher A. Young learn more about Jesus .

Wouldn't a wire brush or wire wheel in an electric drill run at low speed also work???