Anyone know if foam insulation in an aerosol can

[Paper Roses]

would do this job for me. I have two bathrooms where the plumbing was put on the outside wall for the bathroom sinks. For years we tried to stuff insulation up behind the pipes but we were not happy. It always jammed on something. I have seen the aerosol used on 'This old house' but it came in a huge container. The expansion was amazing. I would like to find a can of the stuff with a flexible nozzle so I could spray it up the space. I can remove a section of the floor in both baths but would need to be able to direct the foam between the inside and outside walls. I would have to work around some beams and joists but I think it would work.

Any thoughts? If this stuff exists in cans, is it a Lowe's or HD item?

[Berserker]

1. It is called Great Stuff

I have used it for years. There are several kinds High expansion low expansion and a few others.
http://greatstuff.dow.com/

[Hassin Bin Sober]

2. Be sure to by some acetone to clean your hands. The stuff is sticky and messy.

[Whoa_Nelly]

6. Recently discovered that PedEgg can nicely and lightly shave the gunk stuck to hands

fingers. Just make sure skin is dry when using and go back and forth in only one direction to avoid tearing skin.

used it recently to get dried Gorilla Glue off of finger tips...seconds later, my hands looked new again :)

[Paper Roses]

5. Just went over the "Great Stuff" web site. Could not find an answer

to my one concern. It certainly will be easy to use but how do I tell how much to use and how to direct it to encompass the pipes without filling the whole space from floor to the first cross piece. Do you take out a big chunk? Lots of small holes? I would be working blind as the space is behind the wall. I can look for nail heads and see if I can find where the cross members and the joists meet but that may not work. Think I need the gap filler?

I can just go for broke and squirt it in. Think I should raise the floor and pull out all the old insulation I stuffed between the sill and the wall in this area? All the pipes are foam wrapped that meet this area. I'd just have to schooch them aside and go at it, I guess.From under the floor, I can see the route of the pipes better even though drilling holes would be easier.

[Stinky The Clown]

3. Some suggestions:

Someone mentioned Great Stuff and I agree. But be careful. It comes in several flavors. Some of it can expand so strongly that it will crack your walls and cause the sides of windows to bow in so much the window won't work. Consult a sales person as to which flavor works for you.

It is less a big deal than you might imagine to just drill holes for access to get the stuff where you need it. Then just patch the holes with drywall compound. Actually, if you have gyp board walls, you can even cut a section out and then patch it back in after you insulate.

[Paper Roses]

4. Never thought about drilling holes. Much better idea.

I'm a whiz at plaster and joint compound and am aware of how to prepare for that. Would I drill a 1/2" or so hole, squirt it in, let it expand then fill the holes? I hope the directions are clear because half the time at Lowe's or HD, there is no-one to ask that has any knowledge of the project at hand.

I certainly don't want to put too much in, I hope the directions tell you clearly. The last thing I need to cope with is a messed up job and bowed walls.

Will start this Monday. Does it take long to set up?

Thanks for this alternative.