Greengates Builders Merchants

Get Your OPTI-MIX 3 in 1 RENDER ADDITIVE From Greengates Builders Merchants Accrington, Lancashire.

Product Description

OPTI-MIX 3 in 1 RENDER ADDITIVE is a highly concentrated render additive which is 25 times the strength of conventional render additives.

OPTI-MIX 3 in 1RENDER ADDITIVE triple action formula acts as a water­proofer, air entraining plasticiser and open time extender which eliminates the need for separate water­pro­ofing/­plasti­cizing admixtures.

OPTI-MIX RENDER ADDITIVE forms extremely stable air bubbles in render mixes. This improves the workability of render giving it a “buttery” consistency and helps prevent shrinkage, cracking, crazing and mild frost damage during the curing process, as well as providing long term resistance to freeze/thaw cycles. It also contains pore blocking additives to reduce water absorption and reduces the chance of efflo­res­cence (salt formation). OPTI-MIX RENDER ADDITIVE extends open time to enable large areas to be covered in one go. This product is fully tested to the requirements of EN934 Part 3 Table 2


  • Concentrated formula 1ltr = 25ltrs of standard 3 in 1 Additives.
  • Easy to use gauged bottle.
  • Improves water resistance of mortars.
  • Added plasticising agent improves workability
  • Helps to reduce salt permeation.
  • Prolongs open time of mortar mixes.

Areas For Use

  • Concrete, mortars and screeds.
  • External renders.
  • External pointing.
  • Structures below ground level.
  • Pool and tank linings.

Call In And Pickup Your OPtimix 3 In 1 Render Additive

Greengates Builders Merchants delivering to the whole of Lancashire including: Accrington, Blackburn, Burnley, Clitheroe, Darwen, Great Harwood, Haslingden, Padiham and Pendle.

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