Fixing a Flooded Pool Patio: Gutters, Channel Drains, and Grading Solutions

A raised pool patio draining toward the house causes 6" of water at door thresholds. Gutters helped but aren't enough. A two-part solution is needed.

Part 1: Roof Water Management (Done)

Gutters with downspouts directed away from patio. Ensure they're clean and functional.

Part 2: Interceptor Channel Drain

1. Install linear channel drain (NDS Pro, PolyLok, ABT Drains) at patio-house junction.
2. Slope drain from center of U-shape toward both ends (easier than one deep end).
3. Daylight to lower yard area or storm drain—NOT neighbor's property.
4. Use concrete collars to lock channels in place.
5. Grate: heel-proof, ADA compliant if needed.

DIY Feasibility

Like "big Legos"—dig trench, set channels, glue couplings, concrete haunch, backfill. Requires plate compactor, concrete mixer rental. Doable for skilled DIYer.

Cost vs. Risk

Channel drain system: $1,500-3,000 materials. Foundation repair from water: $10,000-50,000+. Flooded house: priceless.

Maintenance

Clean grates quarterly. Flush lines annually. Treat like gutters—essential upkeep.

Intercept water at the source before it reaches the threshold.