Internal hydraulic lime plaster - Baumit RK38


Baumit RK38 internal lime plaster is:-

  • a vapour permeable (breathable), natural, hydraulic lime plaster, creamy white in colour.
  • ideal as a base coat and top coat plaster for all types of masonry.
  • suitable as a base coat plaster for wet areas.
  • a healthier alternative to cement or gypsum plasters.

Where is it used?

  • Baumit RK38 is used as base coat for the whole interior of the building.
  • Because of it’s high breathability it can be used as a base coat in wet areas such as bathrooms and kitchens and can also be used as a plain finish plaster.
  • Because of the fine aggregates used it is suitable for finishing with Baumit Kalkin Glatte, a very fine hydraulic lime finish plaster.

How is it used?

  • Baumit RK38 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 10-12mm on to sound substrates but can be applied in layers up to 20mm thick if required.
  • Greater thicknesses can be achieved but must be made up in layers of at least 10mm thickness.
  • Coats should be gently finished with a grid plane or nail float prior to application of further coats or any finishing plasters.
  • Finish coats should be applied at around 3mm in thickness with a trowel or spatula and then sponge finished with a fine sponge.

How much will you need?

  • Each 35kg bag of Baumit RK38 will cover up to 2.7m2 at 10mm thickness. 

This product can be bought by the 35kg bag or by the pallet of 36 bags (15% discount on bag price). 



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