SILICONE 450 BROWN - 450BN 450 Builders Silicone is a premium quality low modulus non-corrosive neutral cure silicone sealant that adheres to virtually all substrates, both porous and non-porous. Typically used for construction expansion joints and perimeter pointing of all types of door and window frames. Conforms to BS 5889(A) and ISO 11600.
