Thread: Insulation

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What's the best temperature insulation and noise insulation to use in my 40 ford p/u ?? I see different ones on the web but its all lots of bucks. What do you guys fine to be the best ?

I used the B-Quiet sound deadening material inside my doors; and the closed cell poly for the whole interior - EZ Cool Automotive Insulation heat barrier and noise reduction for cars, trucks, classic cars, street rods and much more My research pointed to these being good products for a whole lot less bucks, but do your own looking and then decide.

Lizard Skin is something that really works. They make two types, heat and sound. You spray it on using an undercoat gun (really big nozzle hole) and the suggested film thickness is 1mm (0.040 inches). You can spray the stuff on both sides of a panel...if the Lizard Skin is exposed to sunlight, you can paint it to prevent chalking. If you upholster over it, no paint is necessary. I have Lizard Skin in my black 39 in Tucson and it works great. The noise suppressor variety weighs more than the heat variety. Stuff is great, water wash up, just mask with paper/tape. There is overspray so cover stuff with a plastic drop cloth. Much better than using the stick on stuff.....stick on stuff can fall if you use it under the headliner or on vertical surfaces.

I've got no personal experience with Lizard Skin, but I see it used a lot. I'll probably use it extensively on my fiberglass Oze body. Jegs seems to have the best price, with free shipping. It can be used under fenders to prevent starring.


LizardSkin® Spray-On Insulation | LizardSkin

I was using an undercoat gun for the first 10 gallons that I sprayed...then I went classy and bought the Lizard Skin spray gun...wow was it ever neat.....sprays much faster. The quart container sprays for about 1.5 to 2 minutes before it is empty. If you spray a lot, you can attach a hose from the gun to the bucket and suck directly. We do the inside and outside of process ovens....lets them heat up faster and keeps the heat inside. Stuff is fantastic. WE buy it from Hot Rods and Custom Stuff in Escondido (1-800-HOT-ROD-5). We used blue 3M tape to mask the area, pull tape off and you have a nice clean line.

I do not want to muddy the waters here-I sprayed Lizard Skin on my Car, and, while I could tell that it did help (I used both the Sound and Heat Control, and used the Lizard Skin Gun), in my very unscientfic test (read: knocking on the Metal, as the Car isn't street worthy yet!) it did not "silence" the Metal like Dynamat Extreme did-

I sprayed some Aluminum panels (for my Trunk) that I made (the inside), and I could tell that the Lizardskin did take the "ring" out of the panel-

Used together they definitely make a big difference, but-if I were only going to use one, I think I would go with Dynamat Extreme (it seemed to make the most difference)-if I wanted it the best I could do, I would use both (if I were building a daily driver I would try some of the variants that are out there-I think some of them are really ok, but it's hard to seperate the Wheat from the Chaff)-

I looked at value as shown on the comparison table - B-Quiet sound deadening materials - Compare B-Quiet with Dynamat which shows the acoustic performance and price per sqft.

35Window is correct, using both is best. Dynamat and the copies are limited at holding against an updside down surface but will work otherwise. Put them over Lizard Skin and it is pretty good.

Do you guys think spraying lizard skin on the inside of fiberglass fenders would be enough protection from starring them as well?

I think it could work pretty well, but I'm not sure about the durability-I used SPI Bedliner (which appears to be bulletproof, and you can tint it)-

Originally Posted by 35WINDOW

I think it could work pretty well, but I'm not sure about the durability-I used SPI Bedliner (which appears to be bulletproof, and you can tint it)-

Thanks. I've been trying to come up with something to put in the wheel well area to protect the glass fenders in the rear. I'm sure it won't take many road trips to ruin your day.

Originally Posted by 35WINDOW

I think it could work pretty well, but I'm not sure about the durability-I used SPI Bedliner (which appears to be bulletproof, and you can tint it)-

Yeah, I'd go with a bedliner product, too. I used Herculiner Truck Bed Liners roll on for undercoating on the bottom of the '33, and it's looking great after two+ years on a gravel road in & out. Two coats minimum to get decent cover, and three's better.