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cockswain's avatar

How can you reuse a can of "Great Stuff" expanding foam by Dow?

Asked by cockswain (15286points) July 14th, 2010

You know that yellow expanding foam in a can you spray into gaps to insulate your home? Every time I use the can and put it away it is non-usably clogged the next time I want to use it. Once I was able to reuse a can by bringing it to work and using a combination of various solvents and compressed air, but I hope there’s a simpler way. Let me know if you know something that works.

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4 Answers

gasman's avatar

I’ve never been able to—didn’t think it was possible. I avoid using it until the job requires close to a full can. Be sure to wear gloves & old clothing. I’ve also had a fair number of brand new cans from which nothing came out the nozzle. Maybe they should call it “Not-So-Great Stuff”.

cockswain's avatar

I’ve reached a similar outlook on the stuff: wait until you’ve got a lot of gaps then run around quickly getting them all.

Gloves are very important, agreed. You’re right too, they should call it something else, like “Might be crappy stuff”, or “OK stuff”

augustlan's avatar

No luck, here, either. I vote for Messy Stuff You’d Rather Never Use Again, But Probably Will.

tumbletree's avatar

First have extra tubing or straws. You’ll need a spray bottle of goo-be-gone, with the citrus in it. After you use it, remove the nozzle and straw. The straw gets thrown away. The nozzle gets cleaned with the spray and a nail. The pop of the can, the stem gets sprayed down and a nail put into it to help clean it out. Leave the stem of the can full of goo-be-gone, and tape it off for long term storage, to trap it in it. Always reuse the old nozzle on a new can, and save the new nozzle for when the old nozzle can’t be used. You can also attach a tube to the stem directly and if desperate and willing to use the rest of a whole can, puncture the stem by hammering a nail down into it, but more simple, I’ve so far found the citrus goo-be-gone and a little cleaning to be sufficient to reuse the cans, though I have yet tried long term storage, just a day or two.

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