Kiilto Pro LM
Lightweight plaster

A lightweight, ready-mixed plaster for finishing walls and ceilings in dry interior areas prior to painting and wallpapering. Suitable also for fixing and smoothing reinforcing tape to gypsum plaster boards.

Special features

  • Very good filling capacity max. 4 mm, low drying shrinkage
  • Very good filling capacity max. 4 mm, low drying shrinkage
  • Light grey
  • Trowel or roller application
  • Trowel or roller application
  • Also suitable for over levelling glass fibre wallpaper
  • Can be painted or wallpapered 
  • Can be painted or wallpapered
  • Suitable for over levelling Kiilto Airblock sealing products on wall surfaces
  • Coverage 1 l/m²/mm
  • Coverage 1 l/m²/mm
  • Drying time approx. 1-2 h/mm




Kiilto LM is a water-soluble, ready-mixed lightweight plaster. Suitable also for fixing and smoothing reinforcing tapes to gypsum board plates. Provides suitable surface for painting and wallpapering. We recommend painting the surface before wallpapering to aid future removal. Complies with the requirements of EN 13963:2005 and EN 15824:2009 standards.

Package Size EAN Code
3 l 6411512137032
10 l 6411512137100
Bond strength

> 0.3 MPa (EN 15824)

Classifications and certificates

stress grading RL01...RL04 of paintable surfaces (The RYL Code of building practice 2012)


Light grey

Curing rate

approx. 1-2 h/mm (+18 °C) (depending on layer thickness and prevailing conditions)

Density/specific weight

approx. 1.2 kg/l

Flexural strength

> 320 N (EN 13963)

Layer thickness

max. 4 mm

Max. grain size

0.2 mm

Package sizes

3 l, 10 l plastic containers


In unopened containers, above +1 °C, for 1 year.


Polymer - light filler - limestone based plaster

Working conditions

normal room conditions, lowest operating temperature +10 °C

Instructions for use

The surfaces to be plastered must be clean, dry and free from dust. 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. Kiilto LM is a ready-mixed lightweight plaster. After long storing, stir before use. The product can be diluted with water, if needed. The plaster is applied with a steel trowel. The plaster can also be applied with a long haired roller, and then the surface is smoothed with a steel trowel.

When fixing reinforcing tapes, apply the plaster in joint and press the paper tape firmly in the plaster. Smooth the joint by applying a second plaster layer using a broader steel trowel. After drying the surface can be easily sanded.

When smoothing painted glass fibre wallpaper, apply first a plaster layer, then sand and add another thin plaster layer. This diminishes the risk of pinholes in paint.

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. The result is also strongly affected by working methods. 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. To use the product properly, please read the product brochure, work instructions and the safety data sheet available at

Environment and safety

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

M1 emission classification for building material
CE marking
The Nordic Swan Ecolabel