12mm Cembrit PB Permabase Building Board For External Render

12mm Cembrit PB Permabase Building Board For External Render

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    Additional Info

    Product Code:
    • Speak to an insulation expert:
      Get in touch with us over our LIVE CHAT or 02038839057
    • Application:
      Popular for external decorative rendering, brick slips or stone slip cladding. Can also be used as an element within internal fire rated partition walls and ceilings.
    • Type:
      Cement based backer board
    • Product Size:
      2400mm x 1200mm
    • Thickness:
    • Pack Coverage:
    • Estimated Delivery:
      2-3 Working Days

    Product Description

    12mm Cembrit PB Permabase Building Board For External Render

    Cembrit PB is lightweight and easy to cut and lift. Mechanical cutting is not required. Reinforced, tapered edges facilitate butt jointed fixing for a stable, crack free base making Cembrit PB popular for external decorative rendering, brick slips or stone slip cladding. Cembrit PB can also be used as an element within internal fire rated partition walls and ceilings.

    Reinforced, lightweight, cement based backer board with tapered edges to facilitate invisible butt joint installation. Approved for use with all leading renders.

    Product Specification

    Thickness: 9, 12mm

    Width: 2400mm

    Length: 1200mm

    Board coverage: 2.88m2

    Density: 1200kg/m3

    Maximum operating temperature: 105°

    Modulus of elasticity: 0.4GPa

    Flexural strength: >5MPa

    Moisture movement: 0.5 mm/m

    Net Weight m²: 10.8 & 14.6 kg

    Fire Rating: A1(Non-combustible)

    Surface: Rough surface

    Edge: Reinforced Chamfered edge

    Colour Options: Natural grey

    Fire rating: A1, 0

    Key Facts


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


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


    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.

    Installation - general principles

    -Installed over sheathing board scribed with hand tools and snapped.

    -Fixed with stainless steel or corrosion resistant nails or screws.

    -Render backer: Unique reinforced chamfered edge for accurate butt jointing and better quality surface finish.

    -Brick slip or stone faced cladding backer: Low water absorbtion, high production tolerances and dimensional stability make a solid base for rigid facings.

    -Fire rated walls: Building elements combining Cembrit PB with mineral wool insulation and plasterboard will achieve 1 or 2 hour fire rated walls or ceilings.

    If you have questions about 12mm Cembrit PB Permabase Building Board For External Render please call us on 02038839057! You can also text us back in our live chat.

    Please find all datasheets in PDF & BROCHURES section.

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