Highly concentrated, mortar dye requires less pigment to achieve vibrant colours. The colouring is permanent, resistant to sunlight and bad weather. Packaged in 2.5 lb bags for easy and clean use. Mortar dyes can be added to any type of mortar mix. One bag of Type N masonry cement and one coloured bag Interstar mortar allow you to lay 150 to 200 standard bricks. Colour: Steel