The expandable foam, i was planning on using that to fill my roll cage (it is tucked and sheet metal in) to keep everything tight and quiet. has anybody else used this home depot stuff for this before.. i thought it would work great for that and to use to mold contours to the roof for a headliner. Has anyone seen this stuff burn or had a problem, as long as it is last to do on the list no sparks or welding flying should there be a problem??Cut some sheet metal and patch it up. Ues a silicone bronze rod tig weld for flexing so it wont crack. Then get some auto seam sealer and finish it up. Don’t just mig it. I see a lot that just mig it but it will just crack all the time and be very careful of the expandable foam. Most have a very low flash point and put off a gnarly smoke.
i had some of it from long ago. when i rebuilt my cage and used my plasma cuter, man that’s when i learned. i think hilte makes some that does not have as low of a flash point. just remember, it is an absolute pain to work around it later.Everybody thinks the expanding foam is a good idea till they have to work on a truck thats had it done. Would not recomend.......
thanks shaggy ill check into that stuff. Im ready to start tacking in all the sheet metal tempaltes already made to tuck and hide the cage work, so im about ready to do something along those lines wether it be foam or nothing...dap makes a water based expanding foam. You can get it at home depot. Check the label first.
Good point!Poly foams require moisture as a catalyst. It doesn't work well in tubing, it can actually remain liquid in the middle until the day you need to make some changes to your cage. DON'T DO IT! The acoustical benefits are too little to justify all the associated problems. If you just can't help yourself, then at least buy the 2 part type of foam. It comes in a box and I don't think they sell it at home depot. I'm sure mcmaster-carr carries it.