I was thinking putting Dynamat everywhere, spraying that expandable foam in the panels I can't get into, and topping it all off with herculiner truck bed liner. I'll then put heat shield padding, and carpet on top.

Is this the BEST way to waterproof, and soundproof?
Is there a better product than Dynamat that's less expensive?
Will the Bedliner stick to the Dynamat?
Should I use a different product on the firewall, and hood? Help!!!!

I chose dynamat only because that's all I've heard of, and I chose herculiner because I was told Durabak doesn't hold up.

The carpet and padding I'm unsure of. I would like high quality molded carpet, but I don't know what's the best - ACC, Catch-All, Etc.. The padding needs to be at least 1/2" thick, and have an aluminum heat shield, as well as provide additional sound deadening.

I am making it so when I go off roading, I can remove all the carpet quickly, and the floor will still be soundproof, and waterproof so I can hose it out when I get back, and put the carpet back in like nothing happened!

PS - I am building a custom "Carpet Kit" enclosure out of MDF and Marine Grade Plywood to hold 4 10" subs, a 6.5" and a Tweeter.

If anyone knows what to use, and what works best, it would be you guys - THANKS!!!!

[ 12-17-2001: Message edited by: MyBigBronco.com ]

quote:

---

Originally posted by NJ:
Try Raammatt, cant get any better, and has an awesome price. I Love It

NJ

---

I did a search for that, and came up with nothing - who makes is and where?

How much?

The B-Quiet sounds too good to be true! Anyone used it?

Should I put like 2 or 3 layers?
Will the Bedliner effect the sound deadening?

All help is appreciated!!

cascade vb1, stinger, brown bread, B quiet, and lots more

this is caustic from mybigbronco.com

i just noticed you did post over there but a different topic name

I really haven't got much help here, but the Board seems slower than MBB, so I understand..

I just figured a topic like this would be more suited here, as EVERYONE HERE SHOULD HAVE DONE IT ALREADY, AND OFFER ADVICE!!

We'll see! I really appreciate you sayin "Wazzzzzup"

C-ya

PS - The Brown Bead looks like the most cost effective, I'm just curious how many layers it will take to quiet it down..

Since I'm bedlining it afterwards, I need to know how many layers to put in, because after I bedliner it, THERE WILL BE NO TURNING BACK!!!

(I may install just the Deadener, and carpet, and see if I'm happy with the dampening)

I'm thinking its gonna take AT LEAST 2 Layers!

PLEASE?? Anyone??

if u stop by the home depot, you can pick up some stuff called "weatherwatch" made by gaf that will cost you a mere $40 for a roll that is 3x50' (150^2 feet).

quote:

---

Originally posted by Tempe:
ice guard which is used in roofing. "weatherwatch" made by gaf that will cost you a mere $40 for a roll that is 3x50' (150^2 feet).

tempe

---

Well - I just measured the areas I want to insulate..

ONE LAYER IS 142.75 SQUARE FEET!!!!! WOW!!!

I think I over estimated, but I don't think I'll ever have enough of the stuff..

So - I need 280 Sq Ft of Regular Damping, and I would like to add some heavy duty "Barrier" to the "Hump" for the tranny, exhaust routing, and the firewall.

quote:

---

Originally posted by Tempe:
i'm gonna start off by sayin that no i've not used it personally, but there's another alternative to dynamat that i have heard of bein used. on my other forum i visit, some guys have used ice guard which is used in roofing.

if u stop by the home depot, you can pick up some stuff called "weatherwatch" made by gaf that will cost you a mere $40 for a roll that is 3x50' (150^2 feet).

tempe

---

but then how do you go about adhering the stuff to your body panels???? some HEAVY DUTY spray adhesive? lots of duct tape?? if i can get some adhesive ideas i'll pick some up on the way back home after finals this week.

quote:

---

Originally posted by stinkynathan83:
but then how do you go about adhering the stuff to your body panels????

---

I was wondering that also! Since the actual bonding to the metal is what does the dampening, the glue has to be REALLY good..

I like the price, but I'm curious how well it works - I dont' want to take the cheap route, and then have to re-do it later becuase it wasn't enough!

It IS cheap, and "Might" work, but does anyone have anything else to say about it?

I just don't want to coat my whole Bronco with 100's of sq ft of Gaf, if 35 sq ft of Brown Bread, or Dynamat would have done the same thing..

checked it out when i was at work and there is a plastic film on it...pulled it back, and yeah....it is adhesive backed...

answered your question...

although they changed their return policy, as long as you have your reciept, home depot will take back just about everything....so suppose you try one layer in one part of your car....you don't think its doin the job, then simply rip it out and return it....they'll take it back...

hope that helps....

lates

I'm gonna become a lab rat!!!

We'll see - I'll take dB tests and measure the results. Numbers don't lie..

I plan on installing one layer, and driving the Bronco around with a dB meter. I'll then add another layer, and measure, then another layer and measure. I'll then add the padding, and measure, and finally the carpet, Etc..

I am thinking I should be able to drop 20-50 Db (in Road Noise Etc)

The stereo should GAIN 10 Db - We'll see..

This is a test..

(I hope)

I just put one layer down, and it is already half as quiet as its EVER been!!!!

Well - I forgot to take the dB meter and do a test BARE with nothing, but I still have a couple layers to go..

I'll do a test with one layer, and when I add another I'll see how much it drops the noise!

The adhesive back isn't as good as I'd like, so I'm gonna buy some glue to stick it down even better.

Its a lot harder than I thought... I wanted to make sure there were no areas that were uncovered, so I took extra time to push it into every crevice, and contour. I found that cutting slits in it to help it conform helped. Every seam is overlapped by at least 2" and in some places, it had to be cut into 6" to 10" strips to keep it from creasing.

I really like this product, and its CHEAP!!

I still have 90% of the roll, and the entire front is already covered ONE layer thick.

I haven't done any doors, sides, or the roof yet until I get a better glue.

Hopefully, tomorrow, I'll get some glue, and start on the doors and roof.

I also bought some "TRIPLE EXPANDING FOAM" but I'm afraid to use it. I think it may bow the panels, so I'm gonna get the regular expanding foam.

Has anyone used this stuff? Any Brand I should get??

I'll keep you posted and take some pics with my digital camera.

The Adhesive isn't sufficient.

Overnight, as things settled, some air bubbles developed, and some areas came unglued.

3M HI-90 SPRAY ADHESIVE WORKS PERFECT!!! (Expensive though - $15.00 a Spray Can)

IS IS SOOOO QUIET!!!

I ran out of the 3M spray, so I gotta get a couple more cans, and do the sides, doors, tailgate, roof, and I still haven't started with the foam.

I never got the dB meter, but its a NIGHT AND DAY DIFFERENCE!!!

I use Raammatt to great sucess, as have many many others.
It is about 60 bucks a roll, and rick will even give youa discount if you buy more than one roll.

Let me just tell you rammatt is some of the best sound deadener I have ever used. It is EXTREMELY sticky and easy to apply. No heat gun, whatsoever.

His email is

rick@raamaudio.com

He is going to be featured in the upcoming car audio mag's, although I can't say which one

email me at my sig since I don't come to this forum that much for more help.

I was real frustrated when I first started deadening, no Idea how to do anything, could give you some tips to help you save some of the pain I went through.

I haven't done the doors, roof, hood, tailgate or sides yet.

I gotta get another roll, and LOTS of 3M!!

Its fairly easy once you get the hang of it..

I wish I had like $1000 to spend on the Beaver Tail, but this is working extremely well. I've got a 3" exhaust, and a 351W with headers, and I can barely hear it inside.

I ordered the $45 package of Beaver Tail, and I'm gonna put that on the firewall and "hump" where the transmission is. If it makes a considerable difference, I'll order $100 or so of it.

Right now, I'm building the sub enclosure / rear seat / bed. Its been an all day project, but the hard part hasn't started.

I gotta fit a 10" woofer in a triangle shaped box that is only 8" deep at the right angle, and 15" tall. I'm gonna have to "steal" airspace from the box next to it..

I'm having a BLAST!! I can't wait!!

I'm gonna take some pictures as soon as I get my camera back.

Any suggestions for fabrics? I'd like to add some vinyl, some velour, and carpet, in some kind of pattern or something to kick it off.

Once I get some pics, I can play with it in photoshop to get some cool designs..

If any of you have any suggestions, or pictures where someone has ripped the entire back seat out of a SUV and built a custom "Carpet Kit" that houses 4 10" subs and a back seat / bed, I would really like to see them!!!

Got one half of it about 80% done. I just have to finish the forward speaker box. It started raining, and then got dark.

I have no idea how to describe the crazy angles and creative ways I've had to work around the wheel well, and the spot weld lip.

There is almost no way to fit the 10" woofer in the "Triangle" area forward of the seat. I think its gonna end up directly in front of the wheel well. After thinking it through, its a better idea because it eliminates a lot of pressure points and corners inside the enclosure, which adds some distortion.

So, basically, in order to get to 1 cubic foot of airspace (Inside Dimentions) per 10" woofer, it took some really crazy angles, and baffles.

I should be done with one side tomorrow, and then I'm gonna wire it all up and I'm gonna try to integrate some 50 hz ports, and see if I can tune it to push more than just sealed.

Hopefully, I should have the "Perfectly Tuned" boxes tomorrow!!

The only downside to putting 4 10" woofers is there is almost NO SPACE FOR COMPARTMENTS!!! I think a couple of good 12's and a LOT of power would do the same, and leave room for storage, but the 10's will sound better, and move more air, but it makes the project a LOT more difficult.

So, each 10" woofer has almost exactly 1 cubic foot airspace, and the 6.5" midbass has a small sealed box in there also.

I'm gonna get my camera and take some pictures. I am really impressed with how well its coming together. I can't wait to have it done for the January BIG BEAR TRIP!!!! (I'll be sleeping on it!!)

IS IT POSSIBLE TO PORT A 1 CUBIC FOOT BOX?????? WHAT WOULD HAPPEN?