myer84

iTrader: (1)

Hey guys,

The other day I went to Home Depot and came across this insulation foam in a can that expands. I was wondering if this can be used for sound deadening. I have mat layed on my trunk lid and license plate area, but when the bass hirs hard I could hear my panels vibrate. I been looking into applying more mat, but I'm trying to keep the car as light as possible. Has anyone ever tried this foam stuff?

filtor1

iTrader: (7)

Be careful with it. If you spray too much of it into the panels and it expands, it will pop the welds on the panels causing even more issues. I don't recommend using this product to eliminate unwanted panel vibrations.

Make sure you identify exactly where the noises are coming from before you decide what to do about it. I have put over 240sq ft of deadener in my car and still have rattles. The process takes time.

myer84

iTrader: (1)

I see your point. I have noticed the noise coming from the bumper and lid. I just hate to know that if I'm bumping people outside hear my car rattle like a cheap POS. Dampening mat is the other route to go, but I like to take the car to the track every now and then and would hate to have 50 lbs + of extra weight due to dynamat. I'm also working on a quick release audio setup so that I can easily remove the subs and amp in a snap.

I will consider adding a little foam around the latch where the lid closes.

BLACKonBLACK98

iTrader: (42)

you can use foam other than expanding for those types of rattles, but if lighweight is your goal then rattles are something you might have to live with.

Hexon

iTrader: (1)

I've heard of a few people spraying that insulator into their spoiler or trunk lid to stop the rattles. I haven't tried it though.

myer84

iTrader: (1)

I guess I'll give a shot this weekend since I have two cans at home. I'll spray a little and see if it makes a difference.

travmaximas1998

u might be better off packing the spaces with poly fill, i dunno but i would be scared of ur body panels bolging out from the pressure of the foam, as mentioned earlier