Cembrit PB is a reinforced, lightweight, Cement based backer board with tapered edges to facilitate invisible butt joint installation. Approved for use with all leading renders, Cembrit PB’s lack of heat and moisture movement, combined with reinforced tapered edges which allow fixings close to the board’s edges provides a strong and stable base which minimizes the risk of cracking of applied finishes.

Key Features

• Versatile, lightweight and easy to install
• Easy to cut and lift
• Non combustible
• Maintenance free
• Mould resistant
• Sustainable

Composition

Rigid cement and aggregate board incorporating polystyrene beads. Reinforced tapered edges designed for butt jointing. Flat surfaces of the board strengthened with glass mesh.

Appearance

Dark grey flat surfaces with grid texture indicating presence of strengthening mesh. Tapered edges with lighter grey cement colour.

Installation

• Easy to lift and work. Unlike other cementitious or calcium silicate boards no specialist blades or fixings required.
• Easily cut by scribing and breaking. Cut edges are generally clean and do not require sanding. No need for mechanical cutting tools, or dust extraction equipment.
• Can be nail or screw fixed close to reinforced tapered edges.
• Can be used in fire rated internal wall partition assemblies.

Compatibility

When used as a render backer it is important to only use render finishes that have been tested and approved as suitable for use with Cembrit PB. The following renders are suitable for use;

K Rend

Weberend MT