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Drainage Correction

in Foundation Repairs

Last updated 6 years ago

Surface Drainage System:

A surface drainage system typically includes 9 inch by 9 inch or 12 by 12 inch area drains and 4” flexible PVC pipe. The system is used to collect water at ground level and channel it away from the home. If there is not enough natural grade to allow the water to gravity drain away, it may be necessary to install a sump and a pump system.

Why would I need a Surface Drainage System: All homes require proper drainage. Homes that have poor drainage can heave. (i.e. if water ponds within 4 feet or so of the foundation after watering or rain) This heaving of the foundation causes stress to both the foundation and structure.

French Drain: A French drainage system typically consists of a deep trench (approximately 4 feet deep, a perforated 4” PVC pipe, a permeable wrap to go around the pipe, and gravel.)

Why would I need a French Drain: A French drain is most commonly used to collect and channel ground water to keep it from going under the home. Ground water that travels under a slab foundation can cause a foundation to go up and down repeatedly which can cause foundation problems. 


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