Reducing road noise - The 1947 - Present Chevrolet & GMC Truck Message Board Network

skokie · 04-12-2005, 01:04 AM

I have heard of brown bread and dynamat being used to help deaden the roadnoise in the floors. Is it worth it to put it in the doors as well?

Thanks.

4x4Poet · 04-12-2005, 01:26 AM

Yup. While the floors get tire and rock chip noise, the doors make good wind echo chambers. Sound insulation between the panel and the inner doors can work wonders, both for noise reduction and stereo speaker sound. Not that you would ever cut doors for speakers.

Kewl overkill would be to line the inside of the doorskins, too.

muddpile · 04-12-2005, 01:46 AM

I plan on doin my floor, firewall, inner doors, backsides of the door panels, and the tin behind the door panel. I hate road noise, and I've used brown bread and I must say it works great!

4x4Poet · 04-12-2005, 02:21 AM

Thanks for the tip, muddpile.

I'll tell my broker to invest in Brownbread tomorrow.

see ten · 04-12-2005, 07:25 PM

I had considered lining the inside of my doors with an insulator but I was concerned it would hold moisture. After all those drain holes are in the bottom of the doors for a reason. I do think I will be lining the inside of my door panels before I reinstall them.

shifty · 04-12-2005, 07:38 PM

I believe most sound deadening products are moisture resistant. I know with things like Dynamat, it's kinda got a tar-like base to it with some kind of plastic or vinyl film on top.

I never heard of brown bread until I came to this forum, so ... I guess I'm kinda dumb as to what it's like.

I gaurantee you you won't have moisture buildup using Dynamat inside or outside your vehicle.

mr.wilson · 04-12-2005, 07:42 PM

What is Brownbead?

Wilson

shifty · 04-12-2005, 07:48 PM

:google:

http://www.b-quiet.com/brownbread.html

(just teasing...but google is a great resource for product info)

1STtimePRo'71 · 04-12-2005, 11:55 PM

I think that brownbread and dynomat are the same thing. I like that brownbread doesnt have any writting on it though.

**pjmoreland** · 04-13-2005, 02:57 AM

The cardboard lining that screws to the front cab pillars on the outside in front of the doors can help cut down on wind whistling noise.

subtle71 · 04-13-2005, 11:04 AM

I highly recommend Dynamat. I installed their Extreme model everywhere there was metal inside the cab, except the dash itself. On the floor, I also used their Maxliner. It is a lead core foam padded material. I would caution all against using any foam type sound deadening products in the doors as they will hold moisture and condensation. Take it from someone that thought it would be fine since my truck never sees rain and is garage kept. Ever washed your truck? Water and foam inside the doors is a very bad thing! I am replacing both my doors. Keep in mind that not all sound deadoning material is the same. Dynamic Control, the makers of Dynamat, are extremely impressive by continuing to develope better products. The research and developement that they put into their products is amazing.

Dean

shifty · 04-13-2005, 11:15 AM

This is sort of on topic: Here is a article showing how to install sound deadening material in a 60's Chevy pickup:

http://www.classictrucksweb.com/tech...dsc/index.html

I saved it from a month or two ago.

04-12-2005, 01:04 AM	#1
skokie Registered User Join Date: Oct 2003 Location: San Jose Ca. Posts: 3,334	Reducing road noise I have heard of brown bread and dynamat being used to help deaden the roadnoise in the floors. Is it worth it to put it in the doors as well? Thanks. __________________ RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234

04-12-2005, 01:26 AM	#2
4x4Poet Registered User Join Date: Nov 2004 Location: "Under Montana skies." Posts: 1,836	Yup. While the floors get tire and rock chip noise, the doors make good wind echo chambers. Sound insulation between the panel and the inner doors can work wonders, both for noise reduction and stereo speaker sound. Not that you would ever cut doors for speakers. Kewl overkill would be to line the inside of the doorskins, too. __________________ '71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup.

04-12-2005, 01:46 AM	#3
muddpile Registered User Join Date: Dec 2004 Location: Saskatchewan, Canada Posts: 1,371	I plan on doin my floor, firewall, inner doors, backsides of the door panels, and the tin behind the door panel. I hate road noise, and I've used brown bread and I must say it works great! __________________ 1964 Chevy Short Fleet: Tornado 1972 Chevy C10: Fast Orange Secondaries Wide Open

04-12-2005, 02:21 AM	#4
4x4Poet Registered User Join Date: Nov 2004 Location: "Under Montana skies." Posts: 1,836	Thanks for the tip, muddpile. I'll tell my broker to invest in Brownbread tomorrow. __________________ '71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup.

04-12-2005, 07:38 PM	#6
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,376	I believe most sound deadening products are moisture resistant. I know with things like Dynamat, it's kinda got a tar-like base to it with some kind of plastic or vinyl film on top. I never heard of brown bread until I came to this forum, so ... I guess I'm kinda dumb as to what it's like. I gaurantee you you won't have moisture buildup using Dynamat inside or outside your vehicle. __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM.

04-12-2005, 07:25 PM	#5
see ten WTB this ad Join Date: Sep 2004 Location: Lafayette Georgia Posts: 5,074	I had considered lining the inside of my doors with an insulator but I was concerned it would hold moisture. After all those drain holes are in the bottom of the doors for a reason. I do think I will be lining the inside of my door panels before I reinstall them.

04-12-2005, 07:42 PM	#7
mr.wilson Registered User Join Date: Apr 2005 Location: Allen,TX Posts: 115	What is Brownbead? Wilson

04-12-2005, 07:48 PM	#8
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,376	:google: http://www.b-quiet.com/brownbread.html (just teasing...but google is a great resource for product info) __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM. Last edited by shifty; 04-12-2005 at 07:48 PM.

04-12-2005, 11:55 PM	#9
1STtimePRo'71 Registered User Join Date: Feb 2005 Location: Lake Crystal, MN Posts: 656	I think that brownbread and dynomat are the same thing. I like that brownbread doesnt have any writting on it though. __________________ -Cory 1967 2 Wheel Chevy

04-13-2005, 02:57 AM	#10
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,426	The cardboard lining that screws to the front cab pillars on the outside in front of the doors can help cut down on wind whistling noise.

04-13-2005, 11:04 AM	#11
subtle71 Granddad's Ol' Truck Join Date: Jan 2005 Location: MS Posts: 588	I highly recommend Dynamat. I installed their Extreme model everywhere there was metal inside the cab, except the dash itself. On the floor, I also used their Maxliner. It is a lead core foam padded material. I would caution all against using any foam type sound deadening products in the doors as they will hold moisture and condensation. Take it from someone that thought it would be fine since my truck never sees rain and is garage kept. Ever washed your truck? Water and foam inside the doors is a very bad thing! I am replacing both my doors. Keep in mind that not all sound deadoning material is the same. Dynamic Control, the makers of Dynamat, are extremely impressive by continuing to develope better products. The research and developement that they put into their products is amazing. Dean __________________ *1971 Chevrolet Custom 10 short step-side* *2005 GMC Sierra SLT 2500HD crew cab 2wd* [I]1971 Chevrolet Custom 10 Deluxe lwb fleet-side

04-13-2005, 11:15 AM	#12
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,376	This is sort of on topic: Here is a article showing how to install sound deadening material in a 60's Chevy pickup: http://www.classictrucksweb.com/tech...dsc/index.html I saved it from a month or two ago. __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM.



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