Protecting Your Home from Storm Water Damage
During a storm, you can go outside and observe how the water flows. Take note of the different grades and slopes and whether they divert the flowing water away from your home. Look for any low spots that collect or pool water and for any steep slopes that have indications of surface erosion.
Consider the steps needed to protect your property from water runoff. Rain that falls on roofs, driveways, patios, roads and other impervious areas moves across the ground surface at greater speeds. The property adjacent to these areas could be more susceptible to damage. Frozen soil can also increase risk of damage by preventing water from being absorbed by the soil. Replacing impervious areas with pervious surfaces, such as permeable paving stones or pavers, can also help.
Other questions you might consider:
Is storm water that falls on impervious surfaces diverted away from your house? This is the work of things like roof gutter downspouts, driveways, walkways and patios. Runoff from these surfaces should be directed to an area that has the ability to absorb or slow the surface flow, such as landscaped areas, and away from your house.
Does your driveway or other impervious surface have a negative pitch back toward the house? Consider installing trench drains or area drains to help prevent pooling and divert water away from the house.
Do you have retaining walls on your property? If so, it is important that the walls have a drainage system in place to alleviate pressure behind the wall. Periodically clean weep holes to ensure they are not clogged. Surface water should not be allowed to cascade over the top of the wall and instead should be diverted to the end of the wall or around it.
Is a portion of your house below ground level, such as a basement? Make sure any sewer and water lines, or any other pipes or lines that penetrate subsurface walls, and foundation cracks are properly sealed. Basements that are prone to water intrusion should have a water collection system in place, such as a sump pump system.
Do you have a sewer or septic system and property with known high water tables? Have the system checked by a professional. If the groundwater rises too high, it can affect the efficiency and operation of the system. In some cases, this may lead to sewer back up or waste leaching above the ground or back into the house.
Make sure that your house exterior is maintained, including roofing, flashings, weather barriers, windows, doors and sealants.
While you cannot prevent against all damage from storm water runoff during large acts of nature, these steps can help protect your home when storms do hit.