6G Celicas Forums

i lined it on the inside, under the factory stuff. makes everything a tight fit but it'll work. if you wanted to do the engine bay id use the thicker fiberglass/foil stuff on the firewall/hood, and the foil/foam on the inside of the fenders/wells.

I'll keep my eyes open and start looking for something we can use to silence motor noise. In the meantime, I guess I'll line the inside of my firewall the same as you did. Grumble grumble. I really don't want to take my dash out, but I suppose the end result is worth the work.

look at your lexus && try to copy what they did

For those who did use the homedepot insulation...how was the difference? greatly improved or still noisy? how many layers you guys go for?

Edit: i have already put b-quiet sound proof layer almost all around and on the back seat to the trunk..if i use this frost king, is that too much layers? and will this raise the carpet up too high?

This post has been edited by chacha: Jan 31, 2011 - 2:03 PM

i have 1/2 inch carpet padding & frost king under my carpet and its about as thick as u want it

This post has been edited by stephen_lee: Jan 31, 2011 - 2:05 PM

great improvement?

hmm...i guess i won't know until i try, what do i got to lose anyways...i have already got the sound deaden and on my note....don't buy ultimate B-Quiet sound deaden because i felt my car sounded louder especially on at high speed...my ears hurt...i feel like i just trapped all the noise vibration inside the car.

This post has been edited by chacha: Jan 31, 2011 - 2:07 PM

ya the foam def deadened out the sound in the car, road noise and all

That's very possible. The Frost King foam insulation absorbs the vibrations, deadening the sound. However, sound 'dampening' will keep sounds inside the car. It's designed to bounce vibrations back, not absorb them. That's why the Frost King and foam carpet padding work so well.

Stephen- it looks like Lexus lined the outside of my firewall with the same stuff they line the underside of the hood with. If the Frost King wasn't silver, I'd definitely have my firewall lined. But I lived for 4 years in a Celica with no engine noise silencing, so I'm sure anything I do will be an improvement. I'll line the inside of the firewall for now and get the car running, then I'll go from there to see what else I need to do.

Hmmmm i may have to get some of this stuff soon, with as stiff as my suspension is everything is rattling

update for those who have done this upgrade in padding?

ooo question! Is there any sound insulation on a stock 99 Celica GT??

The padding helps. Adds a lot of weight, but it helps. The biggest sound reduction I got with the padding was when I lined the rear quarter panels in the trunk and when I lined the inside of the interior plastics. I found that lining my interior plastics/door panels was more effective than gluing the padding to the sheet metal.



Yes, your '99 has the felt under the carpets and lining certain places on the interior plastics. The '96+ also had these white plastic box-looking things attached to the rear speakers that were supposed to cancel noise.

This post has been edited by richee3: Feb 14, 2011 - 3:14 AM

getting a little warmer, guess ill start opening her up soon for the project ground up to roof. many thanks; got a picture of the lining in the trunk

hmmm.... i've done these steps, but instead of adding stuff, i removed every last trace of the factory stuff including shaving it off the bottom of the carpet.

hmmm.... i also have polyurethane engine mount bushes.

but i do have a very tidy interior .... and 1000 rattles.

when i packed it all up in a rubbish sack it weighed 8kg on the scales

okk i'll have to check it out! thanks a lot

Insulated my roof today. To answer my question from much earlier in this thread, Frost King will fit just fine in a Celica with a moonroof. There isn't a lot of space for it, so I feel like noise cancellation might be minimal, but every little bit helps. All that I have left to do is the firewall and then I'll have every conceivable square inch of my sheet metal lined with Frost King. I'll post pictures of the insulated firewall when I get around to doing that.

how'd you get the top roof part off like that? i know the four clips in the back, but damn it was hard to pull out....

after a while, when i installed my new carpet i threw away the padding. I feel no difference whatsoever..

now the frost thing might work better. because looks like it wont absorb moisture.. my padding did when i had the leak.

im going to stuff my quarterpanels with fiberglass insulation this weekend, ill let ya guys know if it helps much (i think it'll help a lot)

The roof lining is easy. Pop those clips out, but then you have to take the plastic trim loose on the sides of the car. Take your sun visors out (two screws for the visor, one for the visor clip, then pull the clip straight down.) Take your rearview mirror down (pop the piece of plastic off of the back using a flathead screwdriver, then two screws to remove the mirror. The plastic piece is hard to pop off. I've put several dents in mine trying to take it off.) After you've loosened the plastic trim and taken the mirror/visors off. you can pull the head liner straight out the back of your hatch. It's a tight squeeze to get it out of a coupe though. Mine is still halfway off because I had other arrangements come up when I was doing the insulation, so you can PM me and I can send you full step-by-step pictures if you like.


The Frost King is an open-cell foam so it does absorb water. However, it doesn't hold it like the padding will, and you can buy some tape to tape the edges of the Frost King to prevent water from getting soaked up.


I considered that. There would be absolutely no sound inside the car. But I decided I didn't want fiberglass dust floating around inside the car, which is bound to happen even in minute amounts. If I did do the fiberglass insulation, I would take a hint from the doors and the plastic weather lining. I would put the fiberglass insulation in then cover the quarter panels with plastic lining so no dust could get inside the car.