The ultimate sealant could possibly be polyurethane caulk.
Polyurethane caulk for concrete.
This sealant has taken all the best attributes of all other sealant types and put it into a convenient single component cartridge ready to tackle your most difficult or even impossible caulking requirements.
This is a bold claim especially with so many types of sealants on the market.
It can be used in cracks up to 1 in.
Sikaflex 1csl flexible self leveling polyurethane concrete expansion joint and crack sealant kit limestone 12 x 10 1 fl oz cartridge 1 2 case awf pro caulk gun 4 9 out of 5 stars 27 107 94 107.
Sikaflex crack flex sealant is a one part sikaflex crack flex sealant is a one part polyurethane sealant for permanently repairing cracks in horizontal concrete surfaces.
For pricing and availability.
Its elastic technology formulation allows the sealant to remain flexible and move with the crack.
Wide and provides long term durability.
Loctite pl polyurethane concrete crack and masonry sealant is a premium quality commercial grade sealant developed especially for forming permanent water and weatherproof seals in all exterior gaps and joints.