Hydroxymethyltriethoxysilane is widely used as a coupling agent in the production of composite materials. It enhances the adhesion between organic polymers and inorganic substrates, making it valuable in coatings, adhesives, and sealants. In the construction industry, it is applied to improve the durability and water resistance of concrete and cement-based materials. Additionally, it serves as a surface modifier in the manufacturing of glass fibers and fillers, ensuring better compatibility with resin systems. The chemical is also utilized in the synthesis of silicone resins and as a crosslinking agent in various industrial applications.