Two coat plaster system for use with metal lathing when bridging steel columns, beams and lintels for ceiling locations comprising of 8mm Thistle HardWall (undercoat) and 2mm ThistlePro PureFinish (finish coat).

The specification PL0035 outlines a robust plastering system designed specifically for use with metal lathing, particularly when bridging steel columns, beams, and lintels in ceiling applications. This two-coat plaster system consists of an 8mm undercoat of Thistle HardWall, followed by a fine 2mm finish coat of ThistlePro PureFinish. This combination not only ensures structural integrity but also provides a smooth and aesthetically pleasing surface suitable for various environments.

Before initiating the skim coat application, it’s crucial to consult with the design team or contractor on site to clarify the expected quality of the finish. Discussions should cover aspects such as the desired smoothness, flatness, and specific design considerations for the project. Ensuring that everyone is on the same page regarding these requirements can significantly enhance the outcome, particularly under lighting conditions that highlight surface imperfections.

The materials involved in this specification are straightforward. For pre-treatment of the finish coat, Thistle GypPrime is recommended to optimize adhesion. The undercoat of 8mm Thistle HardWall provides a solid base, while the final layer of 2mm ThistlePro PureFinish delivers a smooth surface ready for any intended decorative finish or use.

It’s important to remember the requirements associated with the SpecSure® warranty, which guarantees that British Gypsum's proprietary systems will perform as specified for the entire building lifespan. This warranty stipulates that all components must be selected in full accordance with British Gypsum’s installation guidelines. Before making any changes to the established specification, always consult the design team to ensure that any alterations will not compromise the intended performance standards of the project.

Specification: PL0035

Finish Quality

Prior to applying skim coat, liaise with the design team/contractor on site to determine quality of smooth finish, flatness, and the design considerations for work and acceptance of smooth plaster finishes under aspects of lighting.

Products

Finish coat pre-treatment	Thistle GypPrime
Finish coat	2mm of ThistlePro PureFinish
Undercoat	8mm of Thistle HardWall

Other Requirements

SpecSure® system performance warranty confirms that British Gypsum proprietary systems will perform as specified for the lifetime of the building. The SpecSure® warranty requires that all components are specified in full and constructed in accordance with British Gypsum’s installation guidance. For more details see the British Gypsum website. Always check with the design team before making any changes to the chosen specification, ensuring appropriate substantiation is sought to confirm that the solution still meets all required project performances.