Yes, I guess I should’ve said it’s typically above the exterior walls where the heat loss happens and was trying to keep it simpler with just “near the eaves”, but the melting from the heat loss is what makes the ice and you need the colder area lower on the roof to cause the freezing/daming.
The heat loss occurs higher up the roof. The lack of heat loss freezes it at the eaves.
Yes, I guess I should’ve said it’s typically above the exterior walls where the heat loss happens and was trying to keep it simpler with just “near the eaves”, but the melting from the heat loss is what makes the ice and you need the colder area lower on the roof to cause the freezing/daming.