WAYNE0
Well-Known Member
Looking for some ideas on what to use on my floor for sound deadener
Interior sound deadener
- Thread starter WAYNE0
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I used Killmat and like it.
OttawaCharger
Well-Known Member
lots of options with different costs tied to them. I went with the Dynamat 10455. Worked out ok. I only put it on the interior floor and firewall. I might go back and do inside the doors at some point. As with any sound deadener, there is a weight penalty. a box is about 20 lbs and was enough to do the floor. I needed 2 more sheets for the firewall so all in about 22 lbs?
WAYNE0
Well-Known Member
weight doesnt concern me ill check it out thanks
WAYNE0
Well-Known Member
i found it on amazon did it make a difference
Nice work!
Amazon has clones of dynamat that are way cheaper. The main difference that I have found is that the aluminum foil on the clones is thinner. Don’t know how much that really matters.
You can also buy aluminum furnace tape much cheaper as well for seams.
Buy the biggest box you can for your need, as the pieces are larger.
I stuck it everywhere where I could see, floors, inside firewall, trunk floor, under door panels. It really made a difference. Inside of car is much quieter when driving.
You can also buy aluminum furnace tape much cheaper as well for seams.
Buy the biggest box you can for your need, as the pieces are larger.
I stuck it everywhere where I could see, floors, inside firewall, trunk floor, under door panels. It really made a difference. Inside of car is much quieter when driving.
If I remember right, I ended with three boxes, but I did all the floors, including the trunk, as well as the inside of the roof. I plan on doing the doors as well.
That’s where I bought mine. I’ve never had door cards or headliner out so I’ve only done the floor at this point. I can tell a difference in road noise for sure and there is absolutely no heat radiating anywhere from the floorboard.
Just curious - has anyone noticed any problems with moisture collecting under sound-absorbing mat and causing rust issues? I’m in the process of repairing rust issues on the floorpans of my ‘65 Dart GT convertible, and have already replaced the pans in my ‘65 coupe. It seems to me that any moisture coming up from underneath would be trapped between the mat and the floor. I’ve considered putting in something like Dynamat, but I’m not concerned about the noise or the heat, but my cars are, or will be, winter-only cars in Arizona. But even Arizona cars rust. My donor car had unexpected rust in various places and it was an Arizona car since new. Again, not criticizing, just asking a question.
I used Dynamat throughout the entire cab of my truck (floors, firewall, doors, ceiling, and the panel behind the cab/under the rear window), and I'm really pleased with the results. It's not as quiet as a modern vehicle, but it's MUCH quieter than a '68 truck ought to be, that's for sure.
Not sure what using it just on the floor would do, though.
Not sure what using it just on the floor would do, though.
I considered that before I applied the Dynamat in my truck (response #13), and I made sure that not only did I prep and/or seal the surface(s) before applying it, I also made damn sure to roll it out as best possible to (hopefully) eliminate any air pockets, and thus moisture, from getting in there. Only time will tell if I was successful, and I'll be long gone before the next owner finds out.
We paint mine with Rustoleum oil based industrial DTM before we put the Killmat on, so I don't see how in heck it's gonna rust.
DO NOT get deadener for the floor that is self adhesive!!! some day you will have to work on something, or weld on the floor pan underneath and removal of self adhesive sound deadener can be near impossible and very time intensive. I used Dynamat products on my latest project and used DynaPad which is thick with multiple density layers (much more effective) I even ran it right up the firewall in front, stripped the fiberglass insulation off some new firewall insulation backing boards and used the factory push fasteners through the DynaPad to hold it in place. This for the same reason - a place where future work might be done...
That doesn't bother me at all. In fact, I knew ahead of time that I would be redesigning the floor tunnel for the T5 five speed. Nothing a cut off wheel and a mig welder cannot handle.
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