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How to Fix Basement Floor Cracksby HomeRepairExpert.com
Cracks in a concrete basement floor can occur naturally over time with the aging of the structure and settling of the floor. There are a couple of compelling reasons for repairing cracks when they appear. First, radon gas can enter the basement through cracks in the floor if you're in an area susceptible to radon. Second, moisture can enter into the basement as well, contributing to the growth of mold and mildew in your basement.
Things You'll Need
- Shop vacuum
- Stiff brush
- Scissors or knife
- Epoxy crack sealant
Step 1Clean the crack and the area around it. Loose objects and dirt in the crack can cause a poor bond when you apply your repair materials. Vacuum out any dirt or other debris with a shop vacuum. Work the crack area with a stiff, dry brush, rubbing the bristles along the length of the crack. Vacuum a second time.
Step 2Cut the tip of your tube of epoxy crack sealant at a 45-degree angle with heavy scissors or a knife. Make the opening slightly smaller than the crack you'll be filling. Choose an appropriate sealant; different formulations are designed for larger or smaller crack sizes. Sealants for larger cracks usually have an extra bonding and fill material added into the epoxy mixture and are labeled according to their application.
Step 3Apply the crack sealant into the crack, working continuously with a smooth bead from one end to another.
Step 4Let the sealant sit for a few minutes, and make a second application of sealant in places where the sealant has dropped down.
Step 5Smooth off the surface of the sealant with a trowel, feathering the edges as necessary to ensure a smooth transition between the concrete and the filler.
Step 6Allow the sealant to cure according to packaging instructions.
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