I have used fatmat for the past 5 years and my buddy used it on the trunk of his 300. works excellent for a fraction of what dynamat costs.

 

thats very interesting! Keep the tips coming.
To supress road noise which is amplified by chambers or wheel houses, I use that self expanding foam.
But knowing that you never will get it out again, and it is a moisture trap.
To avoid these disadvantages I use plastic (freezer)bags, which are thicker than the average bags. You can fill them and adapt the form to the inner sheet metal, avoiding the mess and keep them off attracting moisture.
Road noise from the rear wheel housings is greatly reduced.

 

I did both front doors, the inners and outers with the peel and seal. Then I moved to the back wall of the cab. Both of those surfaces made a big improvement. It dropped the db in the cab 3 points. Back doors and roof are next.

 

I put the stuff from lowe's everywhere but the firewall and it made a difference. They also had a sheet of green egg carton like insulation and I put some of that between the roof and the headliner. My next project is to put as much deadener on the firewall without having to pull the dash.

 

[QUOTE=Deezel Stink3r;585571]Our member Kazirl mentioned Lowe's peal and seal- I checked it, and he is absolutely right!

where do you find that at lowe's?which department i went talked to 3 different people 2 never heard of it,1 did'nt know where it was,all department heads

 

roofing.

http://www.lowes.com/pl_Peel+%26+Sea...4294963790_44_

 

thanks,i'll go check it out.

does it have a smell/odor?i know some of these type products are asphalt based and have a asphalt/tar type smell to them.how well does the adhesive work for staying applied to surface?i'm in florida and heat and humidity are high on a regular basis

 

It doesn't smell once its applied and we have 100f+ during the summer months and it doesn't affect it any. I put two layers down and it stays cold in the cab 30 minutes after the a/c is turned off. It's well worth the money and work imo.

 

I've had it installed on the back wall of my cab for almost 2 years now. Never smelt any asphalt and it has not slipped any. We also get lots of high 90s low 100 degree temps during the summer. Pretty dry though.

 

I believe it is a butyl rubber. Not Asphalt. No smell at all, and it has been near 100 here for about 6 weeks straight.