Drainage solutions mop up flooding problems

For several months, my company has responded to emergency flood cleanups that require removing water from a basement or sunken living room. Generally, this situation happens because of a broken pipe releasing water into the living envelope or hydrostatic pressure forcing water through the cracks or pores of the concrete foundation.

Fixing a broken pipe usually requires a plumber to come to the home and replace the broken pipe, then removal of the water and drying out the room that was flooded.

Hydrostatic pressure leaks require a little more thought and a lot more work. The first thing that should be considered is the evaluation of your gutter system, down spouts and surface grading layout around the home. These should be corrected first, which may solve the problem. The idea is to force the water away from the foundation of the home. Then, if moisture persists, proceed with an interior or exterior drainage system.

Gutters, down spouts and correct grading: Many basement water problems can be solved by forcing the rainwater and surface drainage away from the home by using down spout extenders or splash blocks to redirect water away from the foundation. Sloping the grade may require hauling in fill dirt and placing it against the foundation sloped away from the home.

Exterior drainage system: Installing an exterior drainage system at an existing building is the most costly of the water control approaches. However, it is the most effective. This requires digging up the area around the foundation and rebuilding it much like a new home installation. As the water percolates down through the ground, it is captured by a porous pipe that direct the water away from the foundation to a drain system. I've heard this drainage system called a "French drain" probably because it was developed in France.

Interior drainage system: The most effective interior drainage system is a perforated drain pipe installed inside the perimeter of the footing. This requires removing and replacing concrete at the slab edge. By placing the drain beneath the slab, water can be direct to a sump pump system which will pump out the collected water inside a standard drainage system.

If a basement has a moisture problem, covering it with any kind of wall finishing material or carpet will make things a lot worse. Wet carpet and drywall are excellent places for mold and fungus growth that can lead to health problems. Remember, when relative humidity is about 50 percent in a home, there will be problems with mold and fungus growth.

If you would like to share a cleaning idea or concept with the reading audience, call Ed Madan at Northwest Environmental Services (255-2266) or send them to Bonner County Daily Bee, 310 Church St., Sandpoint, ID 83864, Attn: What Would Ed Do?

Copy written by Edmond E. Madan, certified executive housekeeper and certified fire, water and mold inspection and remediation contractor. Ed is CEO of Northwest Environmental Services, which specializes in commercial, residential construction, and crime scene/meth lab cleanup.