Installing Sound Deadener

[vince311]

I've been wanting to add sound deadening for a while now, but didn't want the expense of dynomat/fatmat, etc. GoatBeard turned me onto a product called Quick Roof http://www.cofair.com/roof.aspx. Sold at Home Depot. $16.45 for a 6"x25" roll. Roughly 12 sqft.

So far, I've got one door done. Little trial, but overall very easy. The one photo shows the door panel clips at the bottom of the door. You basically have to cut away just enough of the deadener so the clips will slide side to side.

The product suggests applying when above 50 degrees. It was in the high 30s when I applied. The material was just a bit stiff...but definitely laid down nice. Its pretty sticky stuff. I went over the seams with aluminum HVAC tape http://www.homedepot.com/webapp/wcs/stores/servlet/ProductDisplay?storeId=10051&langId=-1&catalogId=10053&productId=100030120

[SUX2BU99]

As a suggestion for when you do the floor, a cost effective solution that produces audible results is putting down 1/2"  house carpet underlay. I tossed the crumbling factory stuff, used spray glue and put down the underlay under my carpet. It worked out great and like I said, made an audible difference in the reduction of road noise. Cost me like $30 or less including the glue. I use R/T General Purpose spray glue, which is the same kind of stuff car audio shops use to glue carpet on woofer boxes.

[vince311]

As a suggestion for when you do the floor, a cost effective solution that produces audible results is putting down 1/2"  house carpet underlay. I tossed the crumbling factory stuff, used spray glue and put down the underlay under my carpet. It worked out great and like I said, made an audible difference in the reduction of road noise. Cost me like $30 or less including the glue. I use R/T General Purpose spray glue, which is the same kind of stuff car audio shops use to glue carpet on woofer boxes.

good suggestion. the only problem with carpet underlay or jute padding is that it holds moisture. Dynomat and similar do not.  Seems the cost is about the same.

[VileZambonie]

Yes be very cautious of what you put on the floor. You're better off with nothing than something that will hold in the moisture. We used duct wrap on one and found it soaked and stayed that way. Never again!

[Stantonss]

Good idea. Hopefully you'll a see/hear a difference when you get the other side done.

[69byrd]

I done my floor with a dynamat type material called fat mat. I got it off ebay. It made a huge difference, it cut down the sound and heat by ten times.

[Captkaos]

bigblock73 used brown bread on his truck.

[SUX2BU99]

Brown Bread from B-quiet is good stuff.  Yes, my suggestion is not good for moisture. My truck never sees rain so not a concern for me but might be for others.

[87OldYeller]

I've been wanting to add sound deadening for a while now, but didn't want the expense of dynomat/fatmat, etc. GoatBeard turned me onto a product called Quick Roof http://www.cofair.com/roof.aspx. Sold at Home Depot. $16.45 for a 6"x25" roll. Roughly 12 sqft.

So far, I've got one door done. Little trial, but overall very easy. The one photo shows the door panel clips at the bottom of the door. You basically have to cut away just enough of the deadener so the clips will slide side to side.

The product suggests applying when above 50 degrees. It was in the high 30s when I applied. The material was just a bit stiff...but definitely laid down nice. Its pretty sticky stuff. I went over the seams with aluminum HVAC tape http://www.homedepot.com/webapp/wcs/stores/servlet/ProductDisplay?storeId=10051&langId=-1&catalogId=10053&productId=100030120

How did this work out for you? I am about t paint the interior and looking to put in sound deadner. Did this stiff turn out OK I am looking to put it in floor board door panels, and under dash on interior firewall?

[vince311]

worked out great IMO. no smell, laid down well..and stayed in place. I noticed a decrease in road noise...which was my goal. I have not used Dynomat, but the cost difference was worth the experiment.

[87OldYeller]

oh ok. cool thanks alot i may go check it out tommrow at H/D. Dont know if it will be warm enought to paint tommrow or not. but i was thinking of doing the inside of the doors. and the door panels.

[1980c10]

I used a product from a local upholstery shop it as similar to carpet pad in appearance but was heavier and designed for under carpet in a vehicle. seems to work nicely and is supposed to be moisture resistant (came in a roll just like carpet pad). Don't know much about it other than that. They said it works well to glue it to the inside of a door too. It's worth the effort to do some research on sound deadening as I think dynomat has done a lot of research on where and how much to use to get your desired effect to prevent you from letting the more important areas go undone while doing less important areas.

[87OldYeller]

cool. well question? the pad that goes on the firewall below the dash. a OEM one is 109.00 it is cut to go around the pedals and all. is it Worth it to buy that and do the floor board in the S/D?

[greenmonster]

I started doing my truck with the s/d from home depot yesterday and will finish today.I done the front part of the floor yesterday and took it for a drive,it made a big difference in sound.I also ordered carpet with the thick padding on it ,so it should be quiet when I'm done.

[87OldYeller]

one of my concerns was like around the heater box where it bolts to the box under the hood because this (Link below) Is thicker would it be wise to order and use it or just ues the tape sounds deadner and maybe double it up I just want it all to fit right and work well.

http://www.classicparts.com/1980-91-Inner-Firewall-Cover/productinfo/42-045/