How To Fix Leaking Basement Walls

By | February 15, 2024

How to Fix Leaking Basement Walls: A Step-by-Step Guide

Water leakage in your basement can be a major headache, causing damage to your belongings, creating mold and mildew, and even compromising the structural integrity of your home. While it's always best to consult with a professional waterproofing contractor for a thorough assessment and repair, there are some DIY steps you can take to identify and fix minor water leaks. ### Step 1: Find the Source of the Leak The first step is to locate the source of the leak. Common sources include: * Cracks in the foundation walls * Holes in the walls caused by rodents or insects * Leaky window wells * Sump pump failures To find the leak, inspect your basement walls carefully. Look for any visible cracks, holes, or areas where water is seeping through. If you're not able to locate the leak visually, try using a moisture meter or calling a professional for a more thorough inspection. ### Step 2: Seal Exterior Cracks If you find any cracks in the foundation walls, you can seal them using a hydraulic cement or epoxy injection. These materials expand as they cure, effectively sealing the cracks and preventing water from entering. 1. Clean the crack thoroughly and remove any loose debris. 2. Apply the hydraulic cement or epoxy according to the manufacturer's instructions. 3. Smooth the material over the crack and allow it to cure completely. ### Step 3: Repair Holes Holes in the walls should be repaired with a patching compound or sealant. 1. Clean the area around the hole and remove any sharp edges. 2. Apply the patching compound or sealant according to the manufacturer's instructions. 3. Smooth the material over the hole and allow it to cure completely. ### Step 4: Seal Around Window Wells Window wells can also be a source of water leakage. To prevent water from entering the basement through the window wells, make sure they are properly sealed. 1. Inspect the window wells for any cracks or holes and seal them as necessary. 2. Install a window well cover to prevent water from splashing into the well. 3. Grade the soil around the window wells so that water drains away from the foundation. ### Step 5: Check the Sump Pump A sump pump is a device that removes water from the basement by pumping it out through a discharge pipe. If the sump pump fails, water can accumulate in the basement and cause flooding. 1. Test the sump pump by pouring water into the sump basin. The pump should turn on and pump out the water. 2. If the pump doesn't turn on or is not pumping water properly, inspect the power supply and the discharge pipe for any obstructions. 3. If you're not comfortable troubleshooting the sump pump yourself, call a professional for assistance. ### Additional Tips * Keep gutters and downspouts clean to prevent water from accumulating around the foundation. * Grade the soil around your home so that water drains away from the foundation. * Seal any cracks or gaps between the foundation and the house. * Ventilate the basement to prevent moisture buildup. If you're experiencing severe water leakage in your basement, it's important to consult with a professional waterproofing contractor. They can assess the situation and recommend the best course of action to repair the leak and prevent future water damage.


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