Which Dynamat To Use?

[70sixpkrt]

I have my back seat out and wondering which Dynamat I should use for sound and heat barrier. I'm only doing the area under the back seat. I was looking at their website and they show a bunch of different ones. What are people using just under the back seat? How about Fatmat?

[ht4spd307]

They are all pretty much the same the only difference I've noticed which is really a larger factor some can weigh up to 2kg a sheet so for me that's what I'd look for just my option

[Gold Rush]

According to their website,  Dynapad for noise control and Dynaliner for heat.  Dynapad comes in 3/8 inch thickness while Dynapad comes in three thicknisses.  The say putting down a layer of Dynamat first doubles  the effect.

Here is their web site.  https://www.dynamat.com/products/dynaliner/?tab=automotive

I am restoring my '74 SE.  Used Dynamat everywhere then added pad or liner as appropriate.  I even added a layer of Dynaliner to the trunk/passenger compartment divider.

[b5blue]

  Don't be fooled. Any thickness of rubber/foil transfers heat very well. To reduce heat look for thermal blocking sheets. I tested my naked interior with just a dash and drivers seat for about a year. I mapped hot spots with a laser pointer temp. gun and blocked hot spots around the hump/firewall and center section.
  Testing showed about 15 degrees blocking for a single layer of what kinda looks like fiberglass mat about 1/8th inch thick. Not wanting to add 75LBs to my car I used foil backed adhesive rubber roofing tape about 6 inches wide here and there to deaden sound on floors and package tray. Carpet has worked for 80 years and it made the biggest impact, I ordered extra and carpeted my package tray.
  After adding Classic Auto Air's A/C system the car is a joy to use even in 99 degree FL. weather. 

[Kern Dog]

Carpet has worked for 80 years

Your carpet came from a 1942 year model car?