The main purpose: Gutters are meant to capture the rainwater from your roof and carry it safely into a downspout – away from your soffit, fascia and foundation, where it can cause damage. Ordinary gutters also capture leaves, other organic debris that can cause them to block during rainstorms. A leaf guard will prevent this problem.
The Installation of leaf guards allows rainwater to travel down and around its curved hood and into the gutter, while deflecting leaves and debris.