Cornerstone Promix Medium Topcoat is a dry ready mixed render and plaster designed for finish render coats within an appropriate render system. Available in the colour tan, which provides an attractive light tan finish with a medium texture when floated with a plastic or wooden float and a smoother yet moderately textured finish when sponged.

Engineered with precision utilising 100% pure natural hydraulic lime, natural sands, and conservation-appropriate additives to create a high-performance render and plaster that withstands high-traffic areas or outdoor elements. Enhanced plasticity supports a decreased likelihood of slump and improved adhesion. Further, a longer open time makes this render undemanding to apply, level, and finish. Available as standard with Saint-Astier® NHL2. Other binders and mix ratios are available upon request.

Well-suited as part for those looking for a natural and traditional aesthetic or a medium textured finish.

– Conservation appropriate additives
– Vapour permeable for improved moisture management
– 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
– Promotes even curing for an improved bond

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

Promix Medium Topcoat suits various internal or external finishing render coats, typically including float coats and sponged coats within an appropriate render system. Appropriate for various project types, including conservation, renovation, or sustainable construction.

Promix Medium Topcoat can be used as a finer finish coat over Promix Coarse Basecoat or as the base coat of a two-coat application onto suitable wood wool render carrier boards with mesh in the basecoat.

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