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Water off the roof, away from the slab

Gutters and Downspouts in League City, TX

Gutters are the one roof-edge job that never needs a windstorm certificate: both TDI and TWIA list gutter work as exempt. They still matter here more than most places, because League City’s expansive clay swells when it is wet and shrinks when it dries, and a slab sitting in a puddle at one corner is a slab moving unevenly.

Sizing for This Rain

A standard five-inch gutter handles ordinary rain. Gulf Coast downpours are not ordinary, and a two-story roof dumping into a single run over the front door shows it. Six-inch gutters with larger downspouts carry more, clog less, and cost a little more. On a large, steep roof they are usually worth it.

White seamless aluminum gutter and downspout on the corner of a brick two-story house, the downspout turning out onto the lawn beside a flower bed

Where the Water Goes After the Downspout

The downspout is half the job. Water should land on a splash block or an extension that carries it several feet from the foundation, onto soil graded away from the house. A downspout emptying against the slab, into a flower bed that holds water, keeps one corner of the clay wetter than the rest.

Underground drain lines work when they are sloped and kept clear; when they are not, they back up quietly. A contractor should check where existing lines come out before tying new downspouts into them.

Seamless Aluminum, Guards, and the Roof Edge

Seamless aluminum is formed on site to the length of each run, so there are joints only at the corners. Guards help under live oaks and pines, not at all under open sky. The gutter hangs behind the drip edge; if the fascia behind it is soft, that repair comes first, and it is covered on the siding and fascia page.

Questions on This Job

  1. Do gutters need a windstorm inspection?

    No. TDI and TWIA both list gutter repair and replacement as exempt.

  2. How far should a downspout discharge from the foundation?

    Several feet, onto ground that slopes away from the house. Farther is better on clay.

  3. Are gutter guards worth it?

    Under trees, often. Without trees overhead, rarely.

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