How to Mix Your Own Polyurethane Sealant Concrete Crack Mix: Lab-grade Ratios Revealed
The Polyurethane Puzzle: Why DIY Concrete Crack Sealing Is Worth the Effort To mix your own polyurethane sealant for concrete cracks, you need MDI-based prepolymer, plasticizer, filler, and catalyst in precise ratios. Most store-bought sealants fail fast because they are too stiff or do not stick well. Our team tested over 20 commercial products and … Read more