Do i need dynamat?

[1969CamaroRS]

It will also be a good start to a thermal layer. Just my $.02Jeff K

I don't think the sound vibration dampeners block heat very well. Least when I put it on my floor (Second Skin's Damplifier Pro), the floor was either cold or hot depending on the outside weather. Once put a heat barrier (Heat Wave Pro) on then I noticed a huge difference.

[Vegas69]

I agree, Ed. I drove my car with sound deadener only and the floor would burn my foot without carpet. The heat wave pro did make a huge difference.

[wmhjr]

whats so bad about it? its essentially the same thing

No, it's not. About the only thing similar about it is that it's "supposed" to stick on, and it's "supposed" to reduce some sort of either noise or heat. How it does it, how long it does it, and how well it does it are about as similar as filling teeth with proper materials and filling teeth with concrete.

There are plenty of threads here that discuss this issue.

[wmhjr]

I'll also chime in on something else. Yes, it adds weight. Most of us would be better off eating one less cheeseburger and losing a little internal weight than focusing on the extra weight of the insulation, though. With the combination of damplifier pro and luxury liner pro - both liberally applied - I really have very little transient nose whatsoever. The fact that it's a convertible with a loud engine kind of mask just how well it ended up insulation, but I have almost no heat (except for around my shifter) and noise transmission is EXCEPTIONALLY low. It's quiet enough that I've drifted down hills, shutting the engine off, just to test. It's friggin amazing how little noise is transmitted. I do have one pesky little squeak/rattle on the drivers side of my convertible top frame that is really getting to me, though!

[NightDiver]

whats so bad about it? its essentially the same thing

While performing similar functions, they are not essentially the same thing... Roofing stuff is meant to be affixed (nailed along with shingles) to a relatively horizontal surface (roof). While this may not cause much of an issue for flooring, using the stuff on doors, roof panels, deck lids, or any other vertical or inverted horizontal surface is just asking for it to soften and shift as it gets hot. In addition, because it is asphalt based rather than foam based, the mats and adhesive used in roofing material give off a nasty smelling set of fumes as they get hot. If you have ever passed a construction site with hot asphalt or somewhere they were replacing the tar on a roof, you will know what your interior will smell like every time your car sits in the sun for any length of time.

[rustomatic]

Doesn't everyone here have like two overdrives? Really, if you get your engine speed under control, things should be okay, unless you've got the ubiquitous 3-inch Flowmaster ghetto bombs; in this case, you will not win the war. With regular mufflers (that actually quiet the motor), I've done well with the $25.00 roll of foil padding crud from Pep Boys, along with the extra jute backing that came with my carpet kit. I've experienced no heat issues idling/driving in traffic at near 100 degrees. My constant sound is minimal, as the motor only screams when I want it to--it's one of the features we like about our dinosaurs...

[Tony_SS]

lol @ the 280lb guy who is complaining that Dynamat adds too much weight. It's like the fella who orders a Diet Coke with his supersized Big Mac meal.

[nicke]

lol @ the 280lb guy who is complaining that Dynamat adds too much weight. It's like the fella who orders a Diet Coke with his supersized Big Mac meal.

So true...

[daveybtv]

lol @ the 280lb guy who is complaining that Dynamat adds too much weight. It's like the fella who orders a Diet Coke with his supersized Big Mac meal.

I resemble that remark!