What Are Joint Sealants and Why Do You Need Them?

Joint sealants are the main component in keeping various structures safe and long-lasting during construction and everyday use. What, then, are joint sealants? Why are they important? Let's break down how joint sealants work and the applications they can be put into, as well as why you should use them on your projects. What Are Joint Sealants? Joint sealants are fillers used to seal or fill gaps between surfaces or cracks that exist between contacting surfaces or at points of expansion and contraction due to temperature, pressure, or wear and tear. These gaps or joints are thus sealed or filled as a means of preventing water infiltration, air, dust, debris, among other contaminants into the joint or crack to preserve structural integrity from failing materials. Sealants may be from various material: including silicone, polyurethane, polysulfide, acrylic or bitumen. The usage of sealant material depends on factors such as the environment, type of material being sealed, the amount o...