My stovepipe is causing ice dams!

[ChoppyChoppy]

Rock Wool is what you need to insulate with.

My pipe melts the frost off at time, but I think it's more the sun reflecting off it than the heat from it.

 

[ppkgmsy]

I's strongly encourage you to check the soffits. Regardless of the ice dams, clogged soffits will lead to mold buildup and wood rot.

 

[Desmond]

A cold beer in the attic sure makes the job go faster, or seem faster

I'll just bring a case of beer along with a dust mask and the shop vac. Looking from outside there appears to be plenty of vents in the soffit, should I be able to see daylight from inside the attic when looking at them?

 

[haveawoody]

Desmond,

While your in the attic you will easily tell if a soffit was clogged, shop vac will gulp up crud and daylight will start to appear.
Even clearing the non vented soffit bays will make a difference in airflow, construction of soffit bays is less than air tight so cleaning them makes a difference also.

Perfect time of year for it also, not to cold but cold enough that things like wasps and other attic visitors will be sleeping.