Installed gutter helmet 8 years ago and have had them serviced twice: 1) New roof installed and they came and temporarily removed helmet and re-installed it after roof was complete 2) had a squirrel get in the gutter through a small gap between the helmet and thew roof. Dennis came and removed the nest and reinstalled a MUCH BETTER end cap at NO CHARGE! THEIR SERVICE AND SUPPORT OF THEIR PRODUCT IS OUTSTANDING!