Gutter Problems

Gutters (eavestroughs in Canada, rain gutters or spouting elsewhere) collect water from the roof edge and carry it to downpipes (downspouts) and away from the building. When they fail, water spills where it should not: onto fascia boards, down walls, and around foundations. Many roof-edge rot and basement water problems start with neglected gutters.

Clogging

Leaves, needles, seed pods, roof granules, moss and nests collect in gutters and at downpipe outlets. Blocked gutters overflow, hold standing water that adds weight, and in winter can fill with ice. Cleaning frequency depends on nearby trees; many owners clean at least in spring and autumn. Gutter guards and outlet strainers reduce but do not eliminate maintenance.

Incorrect pitch

Gutters need a slight fall toward the outlet. A commonly cited guideline is about 1/4 inch of fall per 10 feet of gutter (roughly 2 mm per metre), with more fall in heavy-rain areas. Gutters that are too flat hold water and debris; gutters pitched backward overflow at the wrong end; gutters with too steep a slope can look crooked and may leave debris behind as water rushes past. Long runs often need an additional downpipe or to slope in two directions.

Overflow

Even clean gutters can overflow if they are undersized for the roof area and local rainfall, if there are too few downpipes, or where valleys dump concentrated flow at one point. Splash guards at valley outlets and larger profiles or outlets help.

Ice

In cold climates, gutters can fill with ice and contribute to ice dams. Ice weight can bend gutters and pull hangers out. The lasting fix is reducing heat loss from the attic; heat cable is a localised measure.

Leaks, sagging and separation

Joints, end caps and outlets leak as sealant ages. Hangers loosen or rot out of the fascia, causing sags that hold water. Gutters that pull away can let water run behind them; a correctly placed drip edge or gutter apron directs roof water into the gutter.

Discharge

Downpipes should discharge well away from foundations, into extensions, drains or soakaways permitted by local rules. Rainwater harvesting systems need clean gutters and first-flush devices.