Cornerstone Drymix Medium Lime Mortar

Drymix Medium Mortar

A ready mixed natural hydraulic lime mortar for pointing and general building work with a medium texture and refined buff or white coloured finish.

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More about Drymix Medium Mortar

Cornerstone Drymix Medium is a dry ready mixed lime mortar for general building and pointing work. Available in two colours, buff as standard or white by request.

Engineered with precision, utilising 100% pure natural hydraulic lime, natural sands, and conservation-appropriate additives. The enhanced physical and mechanical characteristics create a high-performance, breathable mortar that provides an authentic natural aesthetic. Available as standard with Saint-Astier® NHL2 or NHL3.5. Other binders and mix ratios are available upon request.

Well-suited for stonework, brickwork or blockwork applications in various joint sizes or projects looking for a traditional and refined finish.

  • Conservation appropriate additives
  • No pigments to combat colour fading
  • Features a refined buff colour after finishing
  • Well suited to various joint sizes
  • Vapour permeable to support moisture management
  • Decreased likelihood of shrinkage cracking
  • Enhanced workability for those behind the trowel
  • Straightforward mixing and finishing
Materials:
Natural Hydraulic Lime, Natural Sands, Additives
Mix Ratio:
2:5, others available on request
Binder:
NHL2, NHL3.5, others available on request
Aggregate:
3mm down sharp washed flint or silica sand
Work:
Pointing, Building, Bedding
Coverage:
A 25kg bag covers approx. 1.5m2
Yield:
A 25kg bag yields approx. 15 litres
Colours:
Buff
Use:
Internal, External
Standard:
BS EN 998-2: 2016
Fire Rating:
A1
Application:
Manual
Data Validation:
3 months ago
NBS Source:

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

Drymix Medium is suitable for general building and pointing work applications. Appropriate for various project types, including conservation, renovation, or sustainable construction.

Well-suited for general building and pointing applications where the joint size is under 10mm and a finer texture is desired. For high-suction brickwork, explore Drymix Brickwork.

Drymix Medium prefers masonry with a degree of suction, so masonry units such as engineering bricks may be more challenging to work with.

A 25kg bag will produce approximately 15 litres of mortar and fill roughly 1.5m² of joint. The width and depth of the joint will influence this estimation. 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-coded paper bags for easy identification on-site. Palletised for ease of transport, storage, and handling. FIBC tonne bags are also available.

Do not use in temperatures below 5°C or above 30°C, or if freezing conditions are predicted within the following few weeks, including wind chill. We always advise following best practices for curing and protecting fresh mortars. Protect from adverse environmental conditions, including frost, rain, direct sunlight and drying winds.

Store in covered and dry conditions, protected from environmental conditions, including water, damp or frost and clear from the ground. Always reseal packaging if product is still present.

Always read the available documentation before use. See the Download Documentation section below for more detailed product information, application guidance and datasheets.

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