The cementone all weather bitumen mastic delivers trowel-applied waterproofing engineered for demanding roofing applications. This 5-litre black bituminous material provides reliable sealing, bedding, pointing and stopping across diverse substrates. Formulated to remain soft and pliable long after application, the mastic develops a protective surface skin while maintaining underlying flexibility to accommodate moderate movement. This ensures long-term performance across varying weather conditions and thermal expansion. Reinforced with added fibres, the material provides enhanced strength when sealing and filling holes in roofing felt, corrugated iron, metal guttering, downpipes and other roofing materials including slates, lead, copper, zinc, concrete and timber. Features & benefits: multi-purpose trowel grade bituminous material for waterproofing, stopping, bedding, pointing and sealing applications. Remains soft and pliable for extended periods, forming a protective surface skin while accommodating moderate substrate movement. Reinforced with added fibres for enhanced strength and durability. Suitable for mastic asphalt, roofing felt, corrugated iron, cast iron, fibre cement, slates, lead, copper, zinc, concrete and timber surfaces. Dries to a flexible black material providing long-term weather resistance. Ideal for roofing repairs, gutter sealing, and general waterproofing in construction and maintenance environments. Volume: 5 litres. Colour: black.