Both matter, but if you safely can, it’s wise to clear leaves from the roof surface itself as well as the gutters. Leaves sitting in valleys, behind chimneys or in low spots trap moisture against the roofing material. Over time, that can speed up wear, encourage moss and algae, and increase the risk of leaks.

Gutters, of course, are critical. When they’re blocked, water overflows and can sneak under roof edges or down walls. But if you only clean gutters and leave large piles of debris on the roof, rain will just wash more leaves straight back towards the drains at the next storm.

Safety is the priority. If your roof is steep or access is difficult, don’t climb up yourself. Hire someone with the right gear. Even then, the goal isn’t to scrub the roof like a floor. Just remove obvious piles and anything blocking water paths, so rain can flow off the roof and into the gutters smoothly.