Kiilto LK

A polymer based base plaster for interior walls and ceilings in dry areas. Maximum level thickness in partial plastering 5 mm, in over plastering 3 mm.

Special features

  • polymer based, light coloured, filling
  • base plaster for walls and ceilings
  • coverage: 1.2 kg/m²/mm
  • coatable: 3 mm/1 d
  • dry interior areas




Kiilto LK is a wall plaster for dry indoor wall and ceiling surfaces. Rough surfaces are plastered first with Kiilto SK or Kiilto TT –wall plasters. The top smoothing is carried out with Kiilto LH – wall plaster. The finished surface can be smoothed further or painted. Not suitable under tiling or wall vinyl.

Package Size EAN Code
20 kg 6411512151205
Classifications and certificates

stress grading RL01...RL03 of paintable surfaces (The RYL Code of building practice 2012)




1 mm layer/m² solid matter weights approx. 1.2 kg

Curing rate

Approx. 1 d (+18 °C) (depending on prevailing conditions)

Layer thickness

partial levelling 1-5 mm, over plastering 1-3 mm.

Max. grain size

0.5 mm

Mixing ratio

5.5-6.0 l water / 20 kg bag

Package sizes

20 kg bag


In an unopened package max. 1 year in dry conditions.

Substrate humidity

concrete < 90 % RH


Polymer-limestone -based powder

Working conditions

recommendation: +18–20 °C, lowest operating temperature +10 °C

Working time

approx. 24 hours (+18 °C)

Instructions for use

The surfaces to be plastered must be clean, dry and free from dust. Indoors, dry porous surfaces should be wetted with water before plastering or treated with a mixture (1:4) of water and Kiilto Pro Start Primer or Kiilto PrimerOne. A new coat should not be applied until the previous one is dry. If needed, the surface should be carefully sanded and cleaned before applying a new plaster coat.

Strew Kiilto LK powder slowly in cool (+18 °C), clean water constantly stirring until a smooth, even mass is formed. Let the mix mature for approx. 15 min and then remix once again. Apply the plaster by hand with a steel trowel or spray with a spraying gun for plasters. Also, the sprayed coat should be levelled by hand with a steel trowel. If left over plaster is saved for the next day, the container should be covered carefully to avoid drying.

Additional information

The information given in this product data sheet is based on our tests and our practical knowledge. The technical data is defined in standard conditions. Variations in local working conditions and methods will affect the product performance and result. We guarantee the high quality of our products according to our Quality Management System. No liability can be accepted from incorrect use of the product or prevailing conditions, over which we have no control. Thus, we cannot be held responsible for the final result. The correct use of the product presupposes that the user has made him/herself aware of the contents of the working instructions and procedure guide, if provided.

Environment and safety

Avoid unnecessary skin contact and exposure with the fresh product, use safety gloves. Refer to material safety data sheet. For information on product and package disposal, visit