The problem with gutter guards..

gutter guards. In a perfect world, they'd keep your gutters clean, and you'd live life easier, with no penalties. In our experience, we've never replaced a roof that had these unfortunately that water didn't back-flow onto the decking and rot the wood at the eave of the roof. It's nothing that we can't replace, but be mindful that when it's time to replace your roof.

rotten roof decking from gutter guards.