British Gypsum Thistle HardWall Plaster 25kg

British Gypsum Thistle HardWall Plaster 25kg

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    Additional Info

    British Gypsum
    Product Code:
    • Speak to an insulation expert:
      Get in touch with us over our LIVE CHAT or 02038839057
    • Application:
      suitable for use on most masonry backgrounds such as bricks, medium-density and aircrete blocks.
    • Type:
      Drying undercoat plaster
    • Product Size:
    • Pack Coverage:
    • Estimated Delivery:
      2-3 Working Days

    Product Description

    British Gypsum Thistle HardWall Plaster 25kg

    British Gypsum Thistle HardWall Plaster 25kg

    An undercoat plaster with high impact resistance

    Thistle HardWall is a quick drying undercoat plaster suitable for use on most masonry backgrounds such as bricks, medium-density and aircrete blocks.

    Thistle HardWall can be hand or spray applied and is ideal for use in a 2-coat plaster system.

    Key Facts

    -Conforms to EN 13279-1

    -This product is certified to BES 6001 achieving a rating of 'Excellent'

    -Available in 25kg bags

    -Approx coverage (m²): 3

    -Approx setting time (hours): 1.5-2

    -Shelf life (months): 4


    British Gypsum Thistle HardWall Plaster is a gypsum undercoat plaster for use on most masonry. With a final coat of Thistle Multi-Finish, it provides a smooth, inert, high quality surface to internal walls. The combination has superior impact resistance, earlier surface drying, a higher than normal resistance to efflorescence, and gives a durable base for the application of decorative finishes. Thistle Hardwall is a lightweight, retarded hemihydrate, pre-mixed gypsum plaster, incorporating special aggregates and additives, requiring only the addition of clean water to prepare it for use. It is suitable for application by hand or by plaster projection machine.


    Fire resistance: Gypsum plasters provide good fire protection due to the unique behaviour of gypsum in fire.

    Thermal resistance

    11mm Thistle Hardwall with a final coat of 2mm Thistle Multi-Finish (total thickness 13mm) has a thermal resistance (R) of 0.04m2 K/W.

    Acoustic performance

    Thistle Hardwall may be used within the Robust Detail constructions E-WM-1, dense aggregate block cavity separating wall, and E-WM-2 lightweight aggregate block cavity separating wall. In these applications the specified thickness is 13mm and attention to detail is important to achieve the required sound insulation, including plastering the complete wall surface down to finished floor level where appropriate. 

    Effect of condensation and other moisture

    Thistle Hardwall should be protected from continuous exposure to moisture.


    What is the minimum temperature that Thistle plaster can be used at?

    We recommend 2°C (5°C for ThistlePro DuraFinish and Thistle DriCoat) as the minimum working temperature in which plaster should be applied. It is important that the temperature does not drop below 0°C during application or in the setting and drying phase.

    What thicknesses are plasters applied?

    Undercoat plasters are usually 11mm and most finish coat plasters are 2mm thick.

    If you have questions about British Gypsum Thistle HardWall Plaster 25kg 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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    British Gypsum Thistle HardWall Plaster 25kg

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