Trass is a natural pozzolan that has seen widespread use throughout northern Europe for hundreds of years, creamy beige in colour it’s a well-known Pozzolan derived from volcanic tuffs sourced from the Rhine Valley in Germany. Similar to the volcanic pumices and tuffs from Pozzuoli, the material established by the Romans.
- Good resistance in salt laden environments
- Lowers capillarity without impacting too much on vapour permeability
- Medium pozzolanic index
- 100% natural material
- The addition rate in lime mortars is advised at 10 to 20% by volume of the binder.
- Pure Trass produced in accordance with DIN 51043
- Available in 40 Kg bags
- R.B.D. 1000 Kg/m3