Available to purchase online @ ronacreteshop.co.uk Visit the store

Pre-packed mortar for waterproof / tanking renders


Ronafix Pre-packed Tanking Render is a hand or spray applied tanking render. It is supplied as a two component mortar including a bag of pre-blended sand and cement and a bottle of polymer gauging liquid. Ronafix Pre-packed Tanking Render will produce a watertight tanking render; it is bonded to the substrate with Ronacrete Standard Primer.  Ronafix Pre-packed Tanking Render will withstand water penetration by a 30m head of water; resistance to water vapour of a 12mm layer is 120 MN·s·g–1 100 times greater than the same thickness of sand/ cement.  Flexural, tensile and compressive strengths are considerably better than similar mixes of unmodified render.  Typical shrinkage of Ronafix Pre-packed Render/ Screed is 0.01%, similar to that of epoxy resins.  Ronafix Pre-packed Tanking Render has the highest polymer cement ratio of the Ronafix pre-packed mortars, providing the greatest flexural and tensile strengths and the greatest resistance to water/ water vapour permeability and shrinkage.

    Quick Question?

    Our Product range

    RonaScreed FastDry Prompt – benefits and drying

    RonaScreed FastDry Prompt (formerly RonaScreed 8 Day Overlay) is so-called because it is a fast-drying screed additive which enables a 50mm thickness of 3:1 sand/ cement screed to be overlaid with moi ...

    Read more

    Drying of Screeds

    BS 8204-1 “Concrete bases and cementitious levelling screeds to receive floorings — Code of practice” section 6.11.1 suggests the following calculation for drying of screeds with no fast drying additi ...

    Read more

    Avoidance/ Mitigation Of The Effects Of Common Forms Of Cracking In Cementitious Screeds

    Aggregate is usually 0–4 mm and is mixed with cement in the ratio of 1:3 or 1:4 cement to sand, depending on strength requirements and drying requirements. For total screed thicknesses in excess of 50 ...

    Read more

    Here to help...