[FSJplumcrazy]

I have to firm up under a new bathtub and shower and the cans of expanding foam I have has instructions that the can is to be inverted to get the stuff out.


Is there some canned foam the sprays upright so I can shoot it up from the basement between the tub and floor or am I screwed and just have to punch a hole in the new walls?

Wayne S

[stags]

Not sure if any work top-up. Even the large cans that screw into the applicator guns want to be upside down. I've used a length of clear tubing to loop up when needed. That way you can monitor the flow. Just don't stop for too long. Good luck. Mark O.

[Pearlbluebird]

They are more money but you can buy a spray foam tank similar in size to a barbaque tank that will come with a small wand for your application.

[jetallman]

The foam cans I use are sprayed upright, make sure to fill tub with water I spray foam under mine and forgot one time and had a jucuzzi lift up.
The foam cans I get are large gap type I believe Dow, get them at local lumber yard.

[sdbob]

The shower stalls and bathtubs we installed we used cement in basements and wood in up stairs installations for support.Sometimes you have 2 people standing inside. Never used foam. Will the high density stuff compress?

[Ed Fitzgerald]

Use the low expansion type and put it in in several applications. Ie. if you are filling and need to use 3-4 cans then do it over 3-4 applications. 1 can= 1 application.

[The Boss]

We use this stuff - mix it up in a 5 gal pails, slop it out and around, set the tub and stomp in it until it's set where you want it. Once dried it's perfectly solid and won't give a fiberglass tub that hollow feeling.

http://www.usg.com/usg-structo-lite-...t-plaster.html

[Greg Reid]

You can always use it the way the previous owner of my car did...To fill up the rust holes in the roof. Apparently, it sands very nicely...

[PMD1969]

Just go get some clear tubing to the length that you need. Then you can hold the can anyway that it needs to go.

[72pontiac]

they do make great stuff that sprays upright i think its the light blue can. for doors and windows.

[Cammer-6]

Originally Posted by 72pontiac

they do make great stuff that sprays upright i think its the light blue can. for doors and windows.

doors and windows stuff is normally minimal expanding
as others have already said,just use a longer tube

[GT182]

LOL... never use that yellow expansion foam around doors and windows. Especially if you want to open them again. Don't ask how I know.

The white foam is the good stuff, but not for under your fiberglass tub and shower unit FSJ.