Bostik Liquid Rubber – Cartridge 310 ml is a one‑component elastic waterproof coating designed for precise application using a caulking gun. It forms a continuous flexible membrane ideal for joints, cracks, edges and difficult‑to‑reach areas. Official usage instructions:

• Clean and dry the surface.

• Insert cartridge into caulking gun.

• Cut nozzle to desired width.

• Extrude a continuous bead.

• Smooth with spatula or wet finger.

• Apply 2–3 cross passes for full waterproofing.

• Surface dry: 2–3 hours.

• Full cure: 24–48 hours.

• Apply between +5°C and +35°C.

• Clean tools with water.