The home, explainedRoofing & rainwater

A guide to the basics

Gutters, explained.

A small detail at the edge of a roof, with an important job: collecting rainwater and guiding it away from the house.

Architectural illustration of a green metal gutter along a tiled roof, connected to a downspout on a pale exterior wall.
A gutter collects runoff at the roof edge. A downspout carries it toward ground level.

Where the
rain goes.

When rain reaches a roof, it flows toward the eaves. Gutters catch that runoff and channel it to downspouts, helping limit water falling directly beside the walls and foundation.

The whole route matters. Water needs a clear path through the gutter, down the pipe, and out to a suitable discharge point away from the building.

Gutter
The horizontal channel along the roof edge.
Downspout
The vertical pipe that carries water down.
Hangers
The supports that hold the gutter in place.
Outlet
The opening connecting the gutter to the downspout.

Different materials. The same job.

Aluminum

Lightweight and resistant to rust, aluminum is widely used for residential gutters. It comes in various finishes and can be formed into long, seamless lengths.

Steel

A sturdy option often protected by galvanizing or a coating. If that protection is damaged, exposed steel can rust over time.

Copper

Copper develops a natural patina as it weathers. Its changing surface gives it a distinctive appearance, especially on older or traditional buildings.

When water
loses its way.

Overflow, dripping joints, sagging sections, and water pooling near the house can signal a problem. Leaves and debris may block the flow, while loose supports or damaged seams can let water escape.

Water spilling over an edge does not always mean a blockage. The gutter's slope, its capacity, and the number or position of downspouts also affect how well the system handles rain.