Cornerstone Promix

Professional grade, multipurpose lime mortars and renders for Pointing and Render applications.




5% discount on orders over £500 (Excluding Vat & Delivery). For larger projects visit our pricing page.

Product Variations

Product OptionPrice (Ex VAT)
coarse / nhl2: £11.95 Ex VAT. (£14.34 Inc VAT.)
fine / nhl2: £11.95 Ex VAT. (£14.34 Inc VAT.)
coarse / nhl3-5: £11.95 Ex VAT. (£14.34 Inc VAT.)
fine / nhl3-5: £11.95 Ex VAT. (£14.34 Inc VAT.)
25 kg
Categories: , . Manufacturer:
Speak to the Team
Ask a Question on the Forum

Speak To The Team

Give us a call between 7:30am and 5:00pm Monday-Friday for more information on any of our products. Or fill in your phone number below and a relevant member of our our team will call you back.

Ask A Question On Our Forum

If you have a question about a relevant product or process, then why not reach out to the community and post a question on our forum. The discussion could help others with simular problems in the future.

Question in one sentence
Select a topic that best fits your question.
An account for you will be created and a confirmation link will be sent to you with the password.
Visit The Forum


Cornerstone Promix is a factory blended mortar that again takes all variables out of the equation, made using St. Astier Natural Hydraulic Lime and high-performance kiln dried sand. Cornerstone Promix offers all of the advantages of the Drymix range but with additional work aids added to significantly improve the mortars physical and mechanical performance.

Key Benefits:

  • Significantly improved workability – Cornerstone Promix offers the feel of modern mortar whilst retaining the properties of pure NHL mixes, the working aids allow a much longer open time to apply and finish the mortar when compared to site mixes and the Drymix range.
  • Significantly reduced shrinkage – less water is required than standard site mixes and the Drymix range, which mitigates the risk of shrinkage as the mortar cures.
  • Improved all round cure – the mortar will cure evenly throughout the mortar, which promotes an improved bond with the substrate.
  • Suitable for high suction backgrounds.

We hold two Promix products in stock, the CLD43 (Coarse) and CLD37 (Fine). Both are made with NHL2 at a mix ratio of 2:5. We have the capability to make custom mixes or make this product with other binder strengths and mix ratios.

Related Products