Concrete bricks and blocks are available in a wide range of compressive strengths to suit all applications. Manufacturers produce a range of standardised door and window lintels in prestressed or reinforced precast concrete for different opening widths.
All concrete blocks are suitable for external work that is to have a finish applied to it. Some types can be painted or left as laid depending on the application. Facing and coloured blocks are generally available in the aggregate range of blocks.