3000- Series Belzona 3111 (Flexible Membrane) A single component, liquid-applied roof coating for long-term roof protection and waterproofing Belzona 3121 (MR7) A liquid-applied emergency roof repair material providing instant waterproofing of leaking roof areas Belzona 3131 (WG Membrane) A liquid-applied roof coating for long-term protection and waterproofing of roofs which can be applied during winter weather conditions Belzona 3211 (Lagseal) A single component, seamless and flexible coating for encapsulation of all types of thermal insulation and cladding systems Belzona 3411 (Encapsulating Membrane) Flexible and peelable corrosion protection system for the encapsulation of flanges and other pipe elements Belzona 3412 Flexible and Peelable system, used for encapsulating flanges and bolt fastening to protect against moisture ingress and prevent corrosion