ASTM C920 is the go-to specification for architects, specifiers, and engineers because it . A sealant that meets C920 Class 50 has been proven to survive thousands of simulated movement cycles without losing adhesion or cohesion.
: The time required for the surface to no longer be sticky. astm c 920
This standard covers single-component and multi-component cold-applied sealants. It classifies them based on , movement , and application . ASTM C920 is the go-to specification for architects,
In modern construction, buildings and pavements are designed to move. Thermal expansion, contraction, vibration, and settling create stresses that rigid materials cannot withstand. To accommodate this movement, elastomeric joint sealants are used. is the premier North American standard specifying the properties of these sealants for sealing joints in building walls, floors, pavements, and other structures. and other structures.
ASTM C920 organizes sealants into a logical code system printed on every compliant container.
A sealant meeting ASTM C920 is defined by a four-part classification code.
A compliant sealant label will read like: