Two coat plaster system for use with metal lathing when bridging steel columns, beams and lintels for wall locations comprising of 11mm Thistle HardWall (undercoat) and 2mm ThistlePro FastSet Finish (finish coat).

The specification for the PL0055 plaster system lays out an effective two-coat process designed specifically for use with metal lathing, especially when addressing the needs of structural elements like steel columns and beams. This system incorporates an 11mm layer of Thistle HardWall as the undercoat, providing a solid foundation, followed by a 2mm layer of ThistlePro FastSet Finish for a smooth and durable surface finish. This combination ensures that the plaster not only adheres well but also enhances the overall aesthetic appeal of the walls.

When preparing to apply the skim coat, communication with the design team or contractor on-site is essential. Discussions should focus on the desired quality of the smooth finish, the flatness of the applied plaster, and specific design considerations that may affect the acceptance of the smooth plaster finishes, particularly in relation to how lighting interacts with the surface. This collaborative approach ensures that everyone is aligned on expectations and that the final result meets the project’s standards.

For optimal results, the products used in this specification are crucial. The initial pre-treatment for the finish coat involves applying Thistle GypPrime, followed by the aforementioned layers of Thistle HardWall and ThistlePro FastSet Finish. Each component plays a vital role in achieving a robust, high-quality finish that meets both aesthetic and performance standards.

Additionally, it's important to note the requirements for the SpecSure® system performance warranty. This warranty assures that the proprietary systems from British Gypsum will perform as specified throughout the building's lifetime. To maintain the warranty, all components must be fully specified and installed according to British Gypsum’s guidelines. Always consult the design team before making any adjustments to ensure compliance with project performance criteria, thereby safeguarding the integrity of your work.

Specification: PL0055

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 FastSet Finish
Undercoat	11mm 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.