Gutter Glossary

A gutter guard is a cover or screen fitted over a gutter that keeps leaves, pine needles, and debris out while letting rainwater flow through, reducing how often gutters need cleaning.

Micro-mesh is a fine woven stainless-steel screen, mounted over a rigid frame, that blocks even small debris like pine needles and seed pods while allowing rainwater to pass through.

"Leaf guard" is a general term for any gutter cover that keeps leaves out of the trough. It includes micro-mesh, perforated metal, reverse-curve, brush, and foam systems of varying effectiveness.

A reverse-curve guard is a solid cover with a curved nose that uses surface tension to pull water around and into the gutter while leaves fall off the edge. It can struggle in heavy rain and with pine needles.

Fascia is the horizontal board that runs along the lower edge of the roof, behind the gutter. Gutters are usually mounted to the fascia, and it's the trim most damaged by overflowing gutters.

The soffit is the underside of the roof overhang, between the fascia and the exterior wall. It often contains vents that allow air into the attic, and it's vulnerable to water damage from failing gutters.

A drip edge is a metal flashing installed along the roof's edges that directs runoff into the gutter and away from the fascia, preventing water from wicking back under the shingles.

A gutter apron is an L-shaped flashing, similar to drip edge but with a longer leg, that bridges the gap between the roof edge and the back of the gutter so water can't run behind it.

K-style is the most common residential gutter profile, with a flat back and a decorative front that resembles crown molding. It holds more water than a half-round gutter of the same width.

A half-round gutter is a semicircular, tube-like gutter often used on historic or high-end homes. It sheds debris well but holds less water than a K-style gutter of the same width.

A seamless gutter is formed on-site from one continuous piece of aluminum cut to the exact length of each roof run, so the only joints are at corners and downspouts — meaning far fewer leaks.

A downspout is the vertical pipe that carries water from the gutter down to the ground and away from the foundation. Undersized or clogged downspouts are a leading cause of gutter overflow.

Gutter pitch is the slight downward slope a gutter run is set at — roughly a quarter inch per ten feet — so water flows toward the downspout instead of pooling.

A gutter hanger is the bracket that fastens the gutter to the fascia. Modern hidden hangers clip inside the gutter and screw into the fascia, holding pitch and supporting the weight of water and debris.

An end cap is the piece that closes off the open end of a gutter run. A failed or poorly sealed end cap is a frequent, easy-to-miss source of dripping and fascia staining.

A splash block is a sloped tray placed under a downspout outlet that disperses water and channels it away from the foundation, helping prevent erosion and basement moisture.

An ice dam is a ridge of ice that forms at the roof's edge when melting snow refreezes, blocking drainage. Clogged gutters make ice dams worse by trapping standing water that freezes solid.

Gutter cleaning is the removal of leaves, grit, and debris from the gutter trough and downspouts so water flows freely. Most homes need it twice a year; heavily treed lots may need a third visit.