Undercoating, Fire wall, Heat & Sound deadening options

[Carlsonmj]

What are some of the options everyone has used for their firewall, undercoating, heat & sound deadening materials (mats, spray,s, etc...)? 818C ~ would like to cut down on road noise.

I have seen a lot on the build threads, from truck bed lining, adhesives, fat mat to HVAC liners! Any recommendations for each application? I am not too concerned about adding additional weight, just want to know the best options out there.

[mrbiglar]

Used Lizard Skin on the interior for sound and heat protection. Great Product...very impressed.

[Bob_n_Cincy]

A local manufacture sent me experimental heat insulation. It is adhesive backed, 3/8" thick, thick embossed foil on heat side with fiberglass wool inner layer. I'm guessing 3 to 5 lbs for rear firewall.This is what it looks like after 2 years 3000 miles. I am very happy with it.
Bob

http://thefactoryfiveforum.com/attachment.php?attachmentid=71272&d=1501340388

[Blwalker105]

This is an excellent, lightweight product. One of the many places I used it was on my plane's lower engine cowling which came within 3/4" of the exhaust headers. Never saw any issues with the fiberglass or the exterior paint.

http://www.thermotec.com/products/adhesive-backed-heat-barrier.html

[lance corsi]

I added an extra outer layer of aluminum skin to my framework around passenger compartment which I plan to coat with the lizardskin product. I'm only coating the side that contacts the framework. Hopefully this will quiet the interior a bit. Might prevent rattles too.