Experts in design and installation and drainage solutions.

We’re glad and appreciative that you chose Williamson to install your drainage system! Just like rain gutters, drains must be clean and clear of debris in order to function properly. All drainage systems require periodic maintenance in order to maintain proper working conditions. This maintenance is NOT a part of our contract, warranty, or normal service. It is up to the home owner to monitor and maintain the drainage system installed. These basic instructions are good for all drainage systems, even ones not installed by us.

1. The yard next to your home should slope away from the house for at least 5 feet.5460
2. When installing rain gutters, pay close attention that the downspouts release water only in areas with good drainage.
3. Your foundation needs water, but too much or too little water WILL create foundation problems. The key to foundation stability is to maintain a consistent moisture level around the home year ‘round. Sprinkler systems help tremendously, but normally do not provide enough water AT the foundation. Therefore, use of a soaker hose is highly recommended, even in conjunction with a sprinkler system.


1. The dirt around your home should not be at the top of your foundation.

54592. Trees and large shrubs (like photinias and large hollies) should be planted at least 10 feet away from the home, as these root system drink a tremendous amount of water from the soil under your home, and they also can create breaks in your plumbing system.

3. Gutter downspouts should never empty water into an area where it will be trapped near the foundation – like flower beds with raised edging, low spots, court yards, etc. Pooling water can create uneven foundation movement, and more severe problems like upheavals.


Unless low-profile drainage basins were used, the standard drain basins installed will have a shallow collection area at the bottom of the drain. This is intended to collect sediment and debris so that it does not enter the pipe and clog the system. This collection basin area must be cleaned out as needed to prevent filling with dirt and debris and blocking the drainage pipe. If the area around the drains has mostly dirt or gravel, this will have to be done quite frequently. Once grass, ground cover plants, and/or larger rocks fill the surrounding area, these drains will typically only need to be cleaned once or twice a year. To clean out these drains, simply remove the screws holding down the drain cover grate, remove the grate, and scoop out all debris. Take a garden hose after all drain boxes are cleaned out and run water through the system to help flush out the drain line. Replace the grate and screws when finished.

Please note that, due to the collection area as an intended design element, mosquitoes can become an issue. For this issue, it is advised to get the area covered with a suitable ground cover as quickly as possible, and then pour concrete in the bottom collection area of all drainage basins. This is not a part of the service we offer, and is a very easy do-it- yourself task. Also, “mosquito rings” can be placed in the drain to prevent mosquitoes from breeding. These are available at most home and garden stores where insecticides are sold.

Driveway “Trough” Drain:

This drain, installed in a driveway, walkway, or patio area, can collect and divert water before it reaches the problem area.
Driveway “Trough” Drain

Low Profile Area Drain:

Most companies use the cheaper, standard area drain collection box which holds water and debris in the bottom, leading to frequent cleaning requirements as well as promoting mosquito breeding. To avoid the messy and mosquito-friendly properties of the traditional area drain basin, Williamson Foundation Repair only utilizes a Low-Profile Area Drain Basin design. This prevents mosquitoes from breeding, and also makes maintenance and cleaning of the drainage system easier.
Low Profile Area Drain

Example of what not to use.

Example of what not to use

Drainage Done Right

The Drainage Difference

Drain Away From The House

Rainy Season in Texas