Azo-Grout™ by Azon includes a variety of hydrophobic and hydrophilic polyurethane commercial grout products. The hydrophobic grouts deflect water away from the repair area and require a minimum amount of water for reaction. The hydrophilic materials absorb a certain amount of water to form a flexible foam or gel and then protect the repair area from further penetration by acting as a watertight seal or membrane.
