How to Repair the Cracks in a Limestone Basement Wall

Limestone, a sedimentary rock consisting of calcium carbonate and other minerals, is formed by fossils that are millions of years old. It is primarily light in color and has been used as a building material for thousands of years. Age, stress, dirt and settling can cause limestone walls in a home to chip and crack. Most chips can be ignored, as they do not threaten the structural integrity of the walls. However, cracks, especially in a basement that forms the foundation of a building, should be repaired.

Things You'll Need

• Safety glasses
• Shop vac
• Clean, damp rags
• Thermo-setting resin
• Putty knife
• Heat gun

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Instructions

1. • 1

     Put on safety glasses and vacuum up all dirt, dust and debris from around the crack using a shop vac.

   • 2

     Clean the wall around the crack using a damp rag to pick up any leftover dirt or dust. Allow the wall to dry.

   • 3

     Fill the crack with the thermo-setting resin, pushing the resin into the crack using a putty knife, if needed. Follow the manufacturer’s directions for application.

   • 4

     Apply heat to the resin using the heat gun. Follow the manufacturer’s directions for temperature, settings and lengths of time to apply the heat.