The Difference Between Silicone Structural Sealant and Weatherproof Sealant

1. Different definitions: Structural sealant is mainly used for structural bonding of building curtain walls, bearing structural loads, with higher bonding strength and modulus; weatherproof sealant is mainly used for waterproof sealing of curtain wall joints without bearing structural loads.

2. Different performance requirements: Structural sealants must meet higher tensile strength, adhesion and durability requirements, usually tested to structural sealant standards; weatherproof sealants emphasize UV resistance, aging resistance and movement capability.

3. Different applications: Structural sealant is used for structural bonding between glass and aluminum frames in hidden-frame curtain walls; weatherproof sealant is used for sealing joints between curtain wall panels, doors, windows and stone joints.

4. Selection advice: Curtain wall projects must select sealants strictly per design requirements and standards; structural parts must use tested structural sealants, never mix them. Kanghong provides professional technical guidance on sealant selection.