Lightweight and plastering mortars

Liapor's lightweight and plastering mortars are perfect for creating uniform masonry structures with excellent heat-insulating properties. The lightweight mortar ensures a secure force-fit between the Liapor masonry blocks. Liapor plastering mortars are used to finish off the external appearance. As single- or multi-layer systems, they meet many different construction-related requirements while still leaving room for individual design freedom.

Perfect for Liapor masonry blocks

Liapor's lightweight masonry mortars with expanded clay grain excel due to their low dry bulk weight and good thermal insulation properties. They improve the thermal insulation of the wall as a whole by up to 30 percent compared with normal mortars. As a result, this expanded clay lightweight mortar is ideal for heat-insulating external masonry structures, in particular when Liapor masonry blocks are used. It prevents a thermal insulation differential between the block and the join, creates a uniform masonry structure and provides the ideal substrate for internal and external plasters. Liapor lighweight wall mortars generally contain Liapor granules with a grain size of up to four millimetres and crushed Liapor sand or even Liaver expanded glass. Liapor lightweight mortar is supplied as a dry mortar from a silo, in sacks or as fresh mortar from a container.

Optimized for substrates with excellent thermal insulation properties

Liapor's plastering mortars are recommended for the subsequent plastering of all wall structures. These are available as single- or multi-layer systems and are ideal for use both indoors and outdoors. The ready-mixed mineral solutions supplied from the factory protect against the influence of weather, improve thermal, noise, fire and moisture protection and also offer almost unlimited design capabilities when used with both high-density and no-fines Liapor walls. Because the plaster surface is thermally linked to the substrate, a heat exchange takes place which effectively prevents the formation of algae and mould. The portfolio includes lightweight plaster of type 1 with a dry bulk density of less than 1,300 kg/m³, lightweight plaster type 2 with a bulk density between 600 and 1,100 kg/m³ and heat-insulating plaster systems with thermal conductivity of between 0.055 and 0.14 W/mK. The type II lightweight plasters have been optimized to provide the best possible elasticity and shrinkage behaviour. Studies have shown that these plasters offer an excellent e-modulus (plaster) / e-modulus (substrate) ratio of significantly less than 1 and they are therefore optimized for use with substrates that possess high thermal insulating properties.

Selected references

Church made from high-density lightweight concrete


High-density lightweight concrete to bring out the details


Volkswagen Arena made from high-density lightweight concrete