Using either exhaust wraps or heat shields, or sleeves should keep things cool enough. Just as with house insulation, wrapping the pipe in a spiral pattern could help reduce temperatures by about 50%.

It’s vital the exhaust pipe be wrapped with at least three inches of foam insulation. If you have just the PVC pipe exposed in the attic, it will get cold and the water vapor in the pipe will ...

Exhaust insulation is a terrific product that has ... inside header tubes and exhaust pipes. By keeping heat inside the exhaust system, you’re reducing under-hood and cabin temperatures ...

"With Performance+, we are raising the bar for insulation and setting a new industry standard for healthier building environments." Knauf's Performance+ Pipe and Pipe & Tank Insulation portfolio ...