Butyl Mastic is a synthetic resin, butyl rubber based mastic which forms a smooth tough skin, but does not fully cure underneath.
• Superior Flexibility
• Superior silicone formulation forms a durable seal which locks out water and does not shrink when drying.
• UV & weather resistant
• Superior adhesion to cement and fibre cement surfaces
Bricks & Mortar, Fibre Cement, Concrete, Metal, Wood, Plastics
Grey, White, Black