I wrapped my entire exhaust system in fiberglass cloth, saturating it with
silicone  instead of epoxy. This has worked well for many years to lessen
the heat in the lower cowl. Ordinary household silicone can take a lot of
heat. Use the high temp stuff if you like.

On Jul 24, 2018 5:56 AM, "Teate, Stephen via KRnet" <krnet@list.krnet.org>
wrote:

> http://www.aircraftspruce.com/catalog/eppages/heatbarriers.
> php?clickkey=7730
>
> I have used this material and it works very well. The aluminized surface
> reflects the vast majority of heat and the fiberglass backing will insulate
> the surface from the rest. The adhesive will not stick to a lot of things
> so I riveted it in place through my cowl and used a thin aluminum backing
> strip for the back side of the pulled rivets. You can then fill the outside
> and sand to hide the rivet heads.
>
> Stephen Teate
> Paradise, Texas
>
>
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