What type of sealant is best for bonding WPC and PVC panels?
What type of sealant is best for bonding WPC and PVC panels?
Outdoor/humid environments (prefer silicone sealant > polyurethane sealant)
If waterproofing and weather resistance are key (e.g., sealing gaps in outdoor WPC flooring or PVC exterior wall panels): Choose a neutral weather-resistant silicone sealant (recommended brands: Dow Corning, Baiyun). It resists UV rays and rain damage and lasts for a long time.
If both strong bonding and weather resistance are required (e.g., attaching WPC wall panels to metal brackets): Choose a polyurethane structural sealant (make sure it’s “outdoor-grade,” such as Sika). It offers over 30% higher bonding strength than silicone sealant and is both water- and weather-resistant.