Product Description
                                                                                                Markham Superswell 47B is a sealing gasket for concrete basements, swimming pools, and retaining walls. The built-in delay system activates after approximately 5-10 days of constant exposure to water and allows concrete to gain full strength before expansion
    - Excellent adhesion - can be bedded into wet concrete
 
    - Suitable for saltwater projects
 
    - Suitable for use in horizontal and vertical joints
 
    - Unaffected by repeated wet and dry cycles
 
    - Non-toxic
 
    - Available in 5m rolls
 
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