The Lignacite Dense Hollow Concrete Blocks are designed for a variety of construction applications. They are designed for easier handling while maintaining conventional levels of performance making them an easy to work with block. Suitable for finishing with all recognized treatments including plaster, drylining, and render. These blocks are used within inner and outer leaves of external cavity walls, internal walls, separating walls, and below ground. Additionally, they serve as fire break walls and infill units for beam and block flooring.