Different trees cause different gutter problems. Here’s what we see on roofs across eastern Montgomery County and lower Bucks County, and what works.
Pine needles
The problem: Needles are thin enough to slip through screens and into reverse-curve slots, and they shed year-round. Inside the gutter they mat into a dense, water-holding mass.
What works: Micro-mesh only. The openings are too small for needles to pass.
Oak tassels and acorns
The problem: In spring, oaks drop catkins (tassels) that form a wet mat. In fall come acorns and big leaves. Huntingdon Valley, Abington and Cheltenham have heavy oak cover.
What works: Micro-mesh on a rigid frame. Tassels dry and blow off, and acorns roll off. Screens let tassel fragments through.
Maple seeds (helicopters)
The problem: Every spring maples drop thousands of seeds that sprout in gutters full of wet debris.
What works: Micro-mesh. Seeds can’t get in, so they can’t sprout.
Sweetgum balls
The problem: Spiky balls jam open downspouts.
What works: Any solid guard keeps them out, and they roll off micro-mesh.
Shingle grit
The problem: Granules from asphalt shingles build up like sand, especially on newer roofs.
What works: Micro-mesh is fine enough to keep most grit out. Screens don’t.
The short answer
If you have more than one kind of tree nearby, and most homes here do, micro-mesh gutter guards are the only type that handles all of it.