expanding foam

[2loud4u 10+ year member]

Reason it will warp your pannels is cause the outside dries while the inside is still drying and expanding.

 

[xluben 10+ year member]

i saw some great stuff at home depot that was made to not bend sheet metal when it expanded. it was for siding or door frames or something.

 

[01SVTCobra]

Low expansion foam is the stuff that doesnt get as big after applying. Use the normal stuff, I use it for construction all the time. Trick is to not try and make anything over about 3/4 to 1 inch thick at a time, multiple layers every 12 - 24 hours and the inside wont stay soft and keep expanding.

If you try to fill all behind a urethane bumper in one hit, the inside of the lump will keep expanding and the bumper will get really wavy. Try it first. put a lump on a sheet of newspaper and watch how big it gets. Also put a larger lump and after the outside dries, cut into it and you will see the interior is still soft and curing because it needs air to expand and cure.

Best bet, go slow, little strips at a time and let it COMPLETELY dry between adding layers. A similar product is used in OEM appliactions for stiffening and deadening in A pillars and such in higher end cars such as Audi. Also has been used in channels in flooring to add stiffness (diferent formulas dry extremely hard and inflexable)

good luck and be patient!

 

[PollyCranopolis 10+ year member]

and don't let it get on anything, cuz it doesn't come off. skin too //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

X2

It's still on the hat I'm wearing right now. Been there for 5 months. Took me hours of hand scrubbing with harsh abrasives to come off my hands. Guess I should have read the directions before I used it instead of after

 

[BassAddictJ 5,000+ posts]

i have some great stuff stuck on some cloths from well over a year ago lol

 

[Reit38 10+ year member]

i work construction and we get "great stuff" , along with another foam that stays the size as when it comes out

so if u have a 1 in diameter ball of it it will stay that size

3in. it will stay 3in.

so on and so on pretty handy

i use this stuff at work more cuz i always end up making a mess everywhere with the expanding kind