For times when plastic cover is too weak! Cover material aka Mjölkpapp is a very durable and resistant cardboard material that resists filler, paint, plaster and other wet waste. The board is perfect to use for tiling, plastering, painting and plumbing job and is sufficiently abrasion-resistant that you can safely use it paved surfaces outdoors. The cardboard can be used on all types of surfaces. Mjökpapp is available in a variety of dimensions and format. Not coated, single & doubled plastic coated, brown and white ar black.