Our Comprehensive On-Site evaluation includes recommendations that you can implement at little or no cost. Granite can also provide drainage correction as a part of the total foundation repair.

Practical solutions to fix drainage problems:

• Proper slope of soil away from house
• Gutter and A/C run-off control
• Surface Drains
• French Drains

What is needed for proper drainage?

The land should slope downward away from the foundation to assure that water does not collect near or under the slab, and also to prevent a soil robbing streaming effect. The slope should be noticeable, in the range of 1 inch per foot for the first 8 feet from the foundation.

A depression within the first 6-12 inches away from the house, caused by rain falloff from the roofline can cause water accumulation. There should be no pooling or accumulation of water either along the perimeter or within 20 feet of the house.

Plant borders may contribute to localized pockets of moisture accumulation. The borders act as a natural water reservoir, and occasionally sprinkler systems are run more often in the planted areas than grassy sections of the lawn.

Water from A/C units should be directed at least 3 feet away from the house.

During our notorious Texas flash rains a massive amount of water is accumulated in rain gutters and directed to downspouts. Gutter downspouts concentrate the rain's effect, and should be positioned to direct rainwater at least 3 to 4 feet away from the house.

Common drainage repairs

Repairs may include grading to alter the drainage slope, adding surface drains, or adding French drains. Sometimes French drains and surface drains are confused. Surface drains remove water at the surface, while French drains collect and drain away sub surface water. Sub surface water is often the culprit as it causes soil in the first 3-5 feet of depth to expand, directly driving upward the beams which provide structural integrity to the house.