Hello hello.

[AussieDistiller1989]

For thumpers and electric powered boilers, many use reflective insulation backed with wool or foam, the foam backed one would be more water friendly.

If you use -anything- with a reflective foil, bear in mind that there is meant to be a air gap between it and the heat for the relective part of it to actually work

Even an sealed air gap will do wonders

Avoid using any galvanized metal near a lpg burner, bad fumes

Do a search on boiler insulation, many effective solutions out there, some will bling it nicely

Thanks for that mate will do some research