By: WNY On: Wed Oct 31, 2007 3:58 pm
That is true, anything to deflect or minimize the heat should help keep it cooler. Not sure what the flashpoint of wood is, but hopefully your pipe doesn't get that hot on the outside.
Insulating probably won't help your draft much, if at all. The draft is normally dependant on the outside temp and the height of your chimney. The colder it is outside, the faster the heat can rise, causing more draft.