Over flowing gutters, downspouts that dump water next to the foundation, back pitched grading and low spots in the yard can cause storm water to enter your basement or crawlspace. In extreme circumstances, this excess water can also cause severe structural damage to your home’s foundation.
Foundations in the Chicagoland and Southern Wisconsin areas are installed to a minimum depth of forty-two inches for slab on grade and crawlspaces for protection from frost heaving; for basements they can be installed to a depth of eight feet or more. In order to install foundations this deep, a hole is dug approximately 3-5 feet wider than the foot print of the foundation. This extra excavation is called the over-dig and gives the foundation crews the room to build the foundation footings and walls.
The over-dig area is backfilled with soil once the foundation walls are complete. This area of backfill is much less dense than the soil that was not excavated. This creates an earthen funnel around the entire foundation that can direct water back to the foundations walls causing leaks from foundation cracks and other problems.
The best way to get storm water away from your home is with clean gutters, downspouts that are extended underground at least ten feet away from the foundation and to make sure grading is positively pitched away from your home. Sump pump discharges should also be directed underground at least ten feet away from the foundation, so the water does not recirculate back to the sump pump basin.
In some cases, these items are not enough or cannot be done due to the configuration of the yard. In these cases, rather than rely on grading, you need to utilize a yard drainage system that collects the water and takes it away from your home.
Yard drainage is just a fancy term for collecting storm water and relocating it via an underground piping system. Ideally this system discharges the water into a storm sewer, if it exists, to take the water completely off your property.
A well-designed yard drainage system can collect water from downspouts, planting beds, driveways and low spots in your lawn and move the water away from the over-dig. This is done through underground PVC pipe to minimize the possibility of storm water entering your basement or crawlspace causing damage to your home and personal belongings.
If you have pooling water in your yard, downspouts that dump water next to your foundation or back pitched grading, contact Midwest Waterproofing for a free consultation. Our staff has years of experience solving all types of yard drainage issues and will help design a cost-effective solution to your yard drainage problem.