Cornerstone Promix Superfine Finishing Plaster

Product Description

Cornerstone Promix Superfine is a dry ready mixed plaster designed for internal finishing plaster coats within an appropriate render system. Available in the colour white, which provides a nearly pure white finish when trowelled or an off-white finish when sponged.

Engineered with precision utilising 100% pure natural hydraulic lime, natural sands, and conservation-appropriate additives to create a smooth and satisfying superfine finishing plaster. Working aids allow for a longer open time, making this breathable plaster undemanding to apply, level, and finish.

Well-suited for a smooth and satisfying internal finish or projects looking to achieve a traditional aesthetic of a lime putty plaster but without the slower setting time.

• Conservation appropriate additives
• Vapour permeable for improved moisture management
• A faster set than a traditional lime putty plaster
• Features the feel of a modern mortar
• No pigments to prevent colour fading
• No-fuss levelling and finishing
• Increased water retention with decreased slumping
• Minimised likelihood of shrinkage cracking
• Enhanced workability for those behind the trowel
• Extended working and finishing time

Area of use

Suitable for internal use, where the binder strength is appropriate for the host background or surface.

Relevant for applications including internal superfine finishing coats, within an appropriate render system. Appropriate for various project types, including conservation, renovation, or sustainable construction.

Explore Promix Coarse Basecoat and Promix Medium Topcoat or our popular Insulating Render to compliment Promix Superfine.

A 20kg bag yields approximately 15 litres of lime plaster and covers roughly 5.6m² at a 2.5mm thickness. Consumption rates will change based on how even the background is and suction. On-site trials are advised for the best yield indication for your specific project.

As natural products, our kiln-dried sands may exhibit variations in colour, texture, and shape. While these variations are minimal, when colour consistency is crucial, we strongly advise each elevation is completed using material from the same batch.

Supplied in 25kg polythene-lined and colour and batch-code paper bags for easy identification on-site and palletised for ease of transport, storage, and handling. FIBC tonne bags are also available.