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Where roof water goes decides how the slab behaves

Gutters and Roof Drainage in Katy, TX

Katy sits on expansive clay, and it also gets rain in volumes that overflow a gutter sized for appearance. Where the water goes after it leaves the roof is a question for the whole house, not just the trim.

What the Clay Does With Roof Water

Clay soil swells when wet and shrinks in drought, and houses on slabs move with the outer edge of it. A downspout that discharges beside the foundation soaks exactly that zone. Drought years then do the opposite. Extending discharge away from the slab and grading it to fall away are cheaper than the problems that follow.

Downspout ending on a small splash block at the edge of a concrete slab with eroded soil beside it

Common Gutter Problems on Katy Houses

Undersized runs

Builder gutters are often sized for appearance. A large roof plane with one downspout overflows in a heavy shower.

Discharge at the wall

Downspouts ending on a splash block a foot from the slab.

Overflow at valleys

Water accelerates down a valley and can shoot past a gutter, especially on roofs with many gables.

Debris from mature trees

Established neighborhoods with mature trees fill gutters with leaves and seed pods within a season.

After Beryl

Hurricane Beryl on July 8, 2024 left street flooding at more than eight locations in the City of Katy and South Mayde Creek overflowing, according to Covering Katy News. Gutters do not stop street flooding, and this page does not say they do. What a well-drained roof does is keep its own water from adding to a lot that is already saturated. Wind-loosened gutter hangers are a common find after a storm and belong on an inspection checklist.

Gutters and Drainage: Questions

Do I need gutters at all?

On clay soil and a slab foundation, most houses benefit. Where a roof edge is over hard paving, they matter less.

Seamless or sectional?

Seamless runs have fewer joints to leak. Size and downspout count matter more than the type.

Who approves gutter color?

Usually the community's architectural committee, as an exterior change.

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