Bitumastic is a single‑component, solvent‑based bitumen rubber mastic joint sealant. It is applied to fill gaps around pipes, roof flashings and the terminations of waterproofing membranes, providing a tough, flexible seal with excellent adhesion to concrete, brickwork, asphalt and most construction substrates. The formulation includes non‑asbestos fibres, giving the cured mastic thixotropic, slump‑free properties.
