How do gutter guards with micro mesh work, and are they worth it?
How the mesh works
Water clings to the fine wires and drops through the openings into the gutter. Debris is too large to follow, so it sits on top until wind or rain carries it off the front edge. The frame underneath supports the mesh so it does not sag into the gutter and holds the guard at a slight angle.
What separates good mesh from cheap mesh
- Stainless steel mesh resists corrosion and keeps its shape. Aluminum or plastic mesh is cheaper but can tear, sag or degrade in sun.
- A stiff frame that spans the gutter without bending under a load of wet leaves.
- Secure fastening to the front lip and the fascia or drip edge, not tucked under shingles.
- Proper fit at corners and ends, where cheap kits often leave gaps that let debris in.
The honest limits
In spring, North Georgia's pine and oak pollen turns into a paste in light rain and can glaze the mesh. Shingle granules, especially on an older roof, collect on top. A glazed or matted mesh sends water over the front in a heavy downpour. A soft brush or a gentle hose rinse once or twice a year usually restores flow. Never pressure wash mesh, which can tear it.
Are they worth it?
Under pines or mixed hardwoods, on a two-story house, or anywhere cleaning means a tall ladder, usually yes. On an open lot with few trees, the extra cost buys little. See gutter sizing, seamless gutters and guards and pine needles and leaves on the roof.