The short answer
Check Gutters and Downspouts
Rainwater that pools near your foundation is the most common cause of basement leaks. Look at your gutters and downspouts first. Clear out leaves and debris so water can flow freely. Make sure downspouts extend at least a few feet away from the house, so water does not dump right next to the wall.
If downspouts are short or missing, add extensions to move water further out. You can also install a splash block to slow the water and spread it out. This simple step often prevents the worst of the water pressure against your foundation.
- Clean gutters in late fall and after storms
- Check for sagging or loose gutter sections
- Extend downspouts with flexible extensions
- Use splash blocks at the base of downspouts
- Make sure downspouts drain away from walkways
Grade the Soil Away from the Foundation
The ground around your home should slope away from the foundation. If the soil is flat or slopes toward the house, rainwater will collect and seep through the walls. You can add topsoil to create a gentle slope that drops at least 6 inches over the first 10 feet.
Be careful not to cover vents or leave soil touching the siding, which can invite moisture and pests. Also, check that any flower beds or mulch are not creating a low spot where water gathers. After a heavy rain, look for low areas near the house where water pools, and adjust the grading there.
This job is doable with a rake and some soil, but for larger grading work, you might want help from a local water damage pro.
Seal Cracks in the Foundation
Small cracks in your basement walls or floor can let in water during heavy rain. Inspect the walls from the inside, especially where the wall meets the floor. Use a concrete patching compound to fill hairline cracks. For wider cracks or cracks that keep coming back, you may need a more thorough repair.
Keep in mind that sealing the inside does not fix the source of the water. It only slows the leak. The real fix is to redirect water outside and improve the soil slope. If you have active water coming in, the pros can help with water extraction and drying after the rain stops.
Consider a Drainage System
If water keeps finding its way in, you might need a more permanent solution. A French drain or an interior drain tile system can collect groundwater and move it away from the foundation. These systems involve digging or trenching and are usually installed by a professional.
A sump pump in a basement floor drain can also help if you get occasional flooding. The pump activates when water rises and pushes it out through a discharge pipe. The cost depends on the size of your basement, the type of soil, and the complexity of the installation.
Before you dig, check with your local building department about permits and utility lines. If you are unsure, a local water damage pro can assess your situation and recommend the right approach.
Act Quickly After a Storm
After heavy rain, check your basement for any damp spots or puddles. The sooner you remove standing water, the less chance mold has to grow. Use a wet-dry vacuum or a pump to remove water if it is shallow. Move furniture and boxes to a dry area.
Dry out the space with fans and a dehumidifier. If the flooding is severe, the pros can perform emergency water extraction and then set up structural drying and dehumidification to prevent secondary damage. They can also map moisture in the walls to find hidden dampness.
Remember that your insurance policy may or may not cover flood damage. Policies vary, and your insurer decides what is covered. Check your policy and ask your agent about flood coverage before the next storm.
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Call Now (801) 383-0232Frequently asked questions
How can I tell if my basement is leaking from rain?
Look for water stains on walls or floors, a musty smell, or puddles after a storm. Check the base of walls and around windows. If you see dampness, trace it back to its source, which could be a crack or a grading issue.
Should I seal my basement walls from the inside?
Sealing from the inside can help with minor dampness, but it will not stop water under pressure. The real fix is to improve drainage outside and slope the soil. For persistent leaks, consider a professional drainage system.
What should I do if my basement floods during heavy rain?
Stay safe and do not enter if water is deep or if there is a risk of electrical shock. Turn off power to the basement if safe. Remove water as soon as possible, then dry the area thoroughly. Call the pros for extraction and drying if needed.