Polyurethane vs polyurea grout

The Contractor’s Nightmare: Callbacks and Angry ClientsYou used epoxy grout to fix a basement crack. It worked—for six months. Now, the leak is back, the client is furious, and you’re eating the cost of a redo. Why Epoxy Fails Where Polyurea Succeeds Factor Epoxy Grout Polyurea Grout Cure Time 4+ hours 20-90 seconds Flexibility Brittle (cracks under movement) 300% elongation Water Resistance Fails if damp Bonds underwater Lifespan 2-5 years 10+ years Case Study: The Parking Garage That Saved $120KA mall’s underground garage had chronic leaks. Epoxy injections failed twice. After switching to polyurea:✔ All leaks sealed in one application✔ No cracks reappeared after 4 years✔ Saved $120K in repeat repairs Pro Tip: For best results, pair polyurea grout with a polyurethane topcoat for added waterproofing.