Fosroc Renderoc Plug, Rapid Plugging Mortar for Water Leaks

Renderoc Plug comes in two types: Renderoc Plug 1 with an initial set time of approximately 1 minute, and Renderoc Plug 20 with an initial set time of approximately 20 minutes, both at 20°C ambient temperature.

Renderoc Plug 1 achieves 10 MPa at 1 hour and 23 MPa at 28 days. Renderoc Plug 20 achieves 7 MPa at 6 hours and 45 MPa at 28 days.

Yes, Renderoc Plug 20 is approved for use in public water supplies and conforms to BS6920 standards for water quality.

Key benefits include emergency water-stopping capability, single-component pre-bagged formulation, excellent bond to substrates, chloride-free composition, and low exotherm to minimize thermal cracking.

Mix one part clean water with three parts Renderoc Plug by volume to achieve a stiff consistency suitable for application.

The substrate must be clean, and free of loose material, grease, or laitance. Areas should be cut back to a depth of at least 15 mm with undercut edges to ensure proper bonding.

The mixed mortar can be trowel-applied or hand-kneaded directly onto the prepared substrate. For running water applications, hold the material in place until it sets.