If the cracks are 1/16" wide or more, you have to fill them with a repair material like Dap flexible concrete crack sealant. If the crack is wider than 1/4", I recommend filling some of the crack with dry sand or foam backer rod. We offer different Concrete Repair Materials that are compatible with epoxy and polyurethane coating systems. These products are designed to repair vertical or horizontal cracks or deteriorated concrete surfaces. Type of Concrete Repair Material: Epoxy Crack Filler; Polyurea Crack Fillers; Cementitious Self – Levelling, Sloping or feather edge.
Patching & Repair by Sherwin-Williams. Click the link below and get directions to your closest Sherwin-Williams store. Hot Crack Filler – Commercial rubberized hot crack filler is heated to 375 degrees and applied to all cracks ¼ - ½ inch wide. This product remains flexible allowing the material to expand and contract. Due to varied weather conditions, cracks may re-open.
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