Tuesday, May 9, 2017

A Heat Insulation Spray-on Coating Alternative to Lizard Skin.

One of the well-known spray-on heat-shield products is Lizard Skin. From their website, “LizardSkin Ceramic Insulation (CI) is an advanced spray on thermal coating that consists of a water-based composition of high-grade acrylic binders with ceramic insulation particles to create a thermal barrier.” The material Safety Data Sheet can be found at

This sheet shows the composition of Lizard Skin as:

1 - Water 7732-18-5 40-50%
2 - Resin Polymer 00-00-00 20-30%
3 - Trade Secret Insulation Media 10-20%
4 - Carbon Black 1333-86-4 5-10%
5 - Extender Pigment 1317-65-3 1-5%

It’s relatively expensive at $200 for two gallons. They sell a special gun ($120) to spray it on although it can be applied with a brush or roller.

Substitutes
It's possible to make your won for much less cost.

1,2 – high solids white latex ceiling paint
3 – Glass microspheres https://en.wikipedia.org/wiki/Glass_microsphere
One suppler is HyTechSales.com, mixing at the rate of one quart of spheres per gallon of paint.
4 – This is added to give lizard skin its distinctive purple/black color. Any color is OK.

5 – Calcium carbonate, pulverized dolmitic limestone, adds bulk and texture, sourced at Amazon or hardware stores.

To spray, rent an airless paint sprayer, use the largest tip available and remove the filters screens from both the suction tube and inside the handle. The application thickness should be that of a credit card.

For heat and noise control, apply the spray-on coating, then add squares of DynaMat or similar product. It's not necessary to cover te entire panel ion DynaMat.

SOURCES

Long forum discussion of various substitutes and application details.

http://www.hotrodders.com/forum/alternative-lizard-skin-103610.html

http://www.hotrodders.com/forum/lizard-skin-application-questions-134551.html

http://www.crankshaftcoalition.com/wiki/Ceramic_insulation

http://www.hotrodders.com/forum/anyone-used-lizard-skin-77796.html

http://www.hotrodders.com/forum/kizard-skin-vs-dynamat-235881.html