Promix Medium Topcoat Render & Plaster - Natural Hydraulic Lime Mortar
Verified by manufacturer 3 days ago
A ready mixed natural hydraulic lime render and plaster with a traditional medium texture and refined tan finish for internal and external finish render coats.
Application
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.
A 25kg bag yields approximately 15 litres of lime render or plaster and covers roughly 1.9m² at a 7mm 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.
Description
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.
Features and benefits:
- 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
General information
Color | Cream |
Finish | Medium |
Material | Hydraulic lime Sand |
Shape | Formless |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Uniclass | |
CAWS | M20/57 Lime:sand Z21/310 Lime:sand mortar mixes Z21/310 Lime:sand mortar mixes M20/330 Proprietary lime:sand M20/310 Lime:sand |
Specification data - Lime renders
Components | Batched dry naturally hydraulic lime:sand. |
Mix | 2:5. |
Lime notification | NHL 2.Guidance for specification option: As standard. NHL 3.5. |
Sand | 3 mm down blended sand. |
Colour | Light tan.Guidance for specification option: Made with a blended yellow sand which gives a light tan coloured render when floated. |
Reaction to fire classification | Class A1. |
Sustainability data
Country of material origin | United Kingdom |
Country of product manufacture | United Kingdom |
Material | Hydraulic lime Sand |
Literature
Promix Medium Topcoat - Product Data Sheet
Cornerstone Promix - Safety Data Sheet