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Promix

Professional Grade Lime Mortar & Render for Pointing and Rendering with a premium finish

Cornerstone’s professional range of Lime mortars and renders, with St. Astier Natural Hydraulic Lime and selected sands to make a high performance, fully breathable NHL mortar with a premium finish.

Through the controlled addition of work aids, the Cornerstone Promix range has been formulated to give improved workability, reduced risk of shrinkage and lime bleed, reduced risk of the mortar drying back to quickly, a longer open time and improved cure.

Cornerstone’s Promix mortars are batch blended for mix consistency, are naturally coloured with no pigment addition, and are available in a range of sands, mix ratios and binder strengths to give the desired finish, natural colour and mortar properties.

Product is palletised for ease of storage, handling and warehousing and packaged in colour-coded and batch-coded 25Kg bags for ease of use and easy identification on site.

Products shown below are available ex-stock; should you require a sand or colour blend other than those below, please contact us to discuss so we can make it to order accordingly.


  1. Cornerstone Promix NHL2 CLD30 Mortar 2:5 Mix 25kg

    Coarse (5mm down) with NHL2 Ideal for base coat and coarse finish renders

    £9.58
    Incl. VAT: £11.50
  2. Cornerstone Promix NHL2 CLD35 Mortar 2:5 Mix 25kg

    Fine (2mm down) NHL2 Ideal for top coat and fine finish renders

    £9.58
    Incl. VAT: £11.50
  3. Cornerstone Promix NHL3.5 CLD30 Mortar 1:3 25kg

    Coarse (5mm down) with NHL3.5 Ideal for base coat and coarse finish renders

    £9.28
    Incl. VAT: £11.14
  4. Cornerstone Promix NHL3.5 CLD30 Mortar 2:5 25kg

    Coarse (5mm down) with NHL3.5 Ideal for base coat and coarse finish renders

    £9.58
    Incl. VAT: £11.50
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