Leca® BLOK Block 12

Leca® BLOK (formerly Optiroc BLOK) is a system of lightweight expanded clay concrete blocks and bricks which, when properly selected, can be used to construct all types of building walls. The 12 cm wide Leca® BLOK 12 expanded clay blocks are mainly used for interior partition walls and exterior curtain walls in three-layer walls.

Walls made of expanded clay blocks

To build walls, use cement-lime mortar and build them with full horizontal and vertical joints. Partitions made of this material have very good sound insulation and fire resistance after plastering. The blocks can also be used as a brick veneer for building corners and as a lightweight material for closing openings in renovated buildings.

*Expanded clay has high thermal and acoustic insulation parameters and is resistant to frost, fire, mould, fungi and humidity. The detailed specification of the final product is set out in the Declaration of Performance