Academy

When it comes to achieving a flawless finish on your ceiling surfaces, the PL0039 specification offers a robust solution designed specifically for medium to high suction backgrounds. This two-coat plaster system comprises an 8mm undercoat of Thistle HardWall followed by a 2mm finishing layer of ThistlePro PureFinish. This combination ensures durability while providing the smooth texture needed for modern interior design.

Before applying the finish coat, it’s essential to collaborate with the design team or contractor on-site. Discussing the desired quality regarding smoothness and flatness is crucial, especially considering how lighting will interact with your plaster surfaces. This early communication can help align expectations and ensure the final outcome meets aesthetic and functional performance requirements.

In the application process, it’s recommended to utilize Thistle GypPrime for pre-treatment to enhance adhesion and overall performance of the finish coat. The layering process, beginning with the Thistle HardWall undercoat and topped with ThistlePro PureFinish, is vital to achieving a high-quality surface. Adhering to these product specifications not only enhances the appearance but also aligns the work with British Gypsum’s installation guidelines.

Lastly, it is important to note the SpecSure® system performance warranty, which guarantees that British Gypsum's proprietary systems will perform as intended throughout the building's lifespan. This warranty mandates that all applicable components are fully specified and installed correctly. Before making any modifications to the specified materials or methods, consult with your design team to ensure continued compliance with all project performance requirements.

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Specification: PL0039

Two coat plaster system for medium to high suction backgrounds for ceiling locations comprising of 8mm Thistle HardWall (undercoat) and 2mm ThistlePro PureFinish (finish coat).

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.

Primers in plastering are liquid coatings I apply to surfaces before the plaster goes on. They help the plaster stick better, stop suction from the background, and give me a more even finish. I use different ones depending on the surface—like grit primers for smooth concrete or stabilising primers for dusty walls. Basically, they prep the wall so the plaster doesn’t crack, peel, or dry too quick.