Breathable lime finish plaster and render - Baumit Kalkin RK70N


    • Baumit Kalkin RK70N contact mortar is:-
      • an easy to use, hydraulic lime based render/plaster which is creamy white in colour.
      • a bonding coat render/plaster to enable adhesion of subsequent coats.
      • great as a fine finish render for external and internal use.
      • highly breathable meaning it can be used on historic buildings and wet areas internally.

      Where is it used?

      • Baumit Kalkin RK70N is and suitable for use throughout the whole interior of the building.
      • It can be used on external facades but should be decorated with the appropriate Baumit paint finishes.
      • Because of it’s high breathability it can be used as a top coat in wet areas such as bathrooms and kitchens and can also be used as a plain or fine finish plaster depending on the method of finishing.

      How is it used?

      • Baumit Kalkin RK70N should be mixed by a plaster whisk with clean tap water to a smooth consistency and then applied by hand or it can be spray applied by machine.
      • It is typically applied at a thickness of 2mm on to sound substrates and then left to stiffen.
      • Once stiff the plaster can be sponged with a fine sponge or a steel trowel can be used to produce a finer finish.
      • The sponge finish would be recommended for external applications.

      How much will you need?

      • Each 25kg bag of Baumit RK70 will cover up to 9m2 at 2mm thickness
    This product can be bought by the 25kg bag or by the pallet of 42 bags (15% discount on bag price).  


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