How to choose silicone sealant based on seam displacement

Building joints expand and contract with temperature changes and structural deformation, and the sealant’s movement capabilities need to match the joint design. When selecting a weather-resistant sealant, joint width, adhesive layer thickness and expected movement should also be considered.

Dimensional tolerances and installation deviations during construction will also affect the actual movement experienced by the joints. This article outlines the selection principles regarding displacement levels and joint design, and showcases Glorystar Chemicals curtain wall sealing products.