The Bostik Express Pointing Mortar is suitable for masonry joints and can be used to seal between stones, brick slips, and around lead flashing. No primer is required on most substrates, even on slightly damp surfaces. It can be overpainted where required. Supplied ready to use and is easily applied with a cartridge gun, internally or externally. This mortar is specifically developed to quickly repair damaged masonry joints in brick and stonework, without the need for mixing. It produces durable, weather-resistant joints and is overpaintable with water-based and synthetic paints. It can be used on multiple substrates, works on damp surfaces, and is rain resistant. Coverage is approximately 6 linear metres.