Simpson Strong-Tie Crack-Pac
Simpson Strong-Tie Crack-Pac makes high-strength, waterproof repairs on fine- to medium-width cracks (1/64 to 3/32 inches wide) in concrete columns, slabs and walls. The product mixes within cartridges and dispenses with a standard caulking tool. Crack-Pac easily penetrates narrow fractures with light viscosity and low surface tension.