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Trass is a pozzolan that can be added to mortars to reduce capillarity without impacting too much on vapour permeability. Available in a 40kg bag.

£15.84 £19.01 inc VAT

SKU: 128301 Category:

In stock


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.

Pure Trass produced in accordance with DIN 51043. Available in 40 kg bags.

  • R.B.D. 1000 Kg/m3
  • Good resistance in salt laden environment
  • Lowers capillarity without impacting too much on vapour permeability
  • Medium pozzolanic index

The addition rate in lime mortars is advised at 10 to 20% by volume of the binder.

See the Technical Data and Documentation section for more detailed product information, application guidance and datasheets. Always read the available datasheets and guidance before use. Each project is unique; always seek professional advice before undertaking a project.

Always read the available datasheets and documentation before use.

Pallet orders with Palletforce Economy are typically dispatched from Cornish Lime within 1-2 business days, providing your item is in stock and not made-to-order. Once dispatched, Palletforce will deliver your order within 3-5 business days, depending on your location. Please ensure that your site can accommodate articulated lorries or similar-sized vehicles.

Local Delivery
The Cornish Lime team provides local delivery with a 12-tonne vehicle with a crane to assist with unloading. You will be contacted by phone to arrange delivery and ensure your site can accommodate our vehicle.

APC Parcel Courier
Orders shipped by APC parcel courier are typically shipped the next business day and arrive within 2-3 business days, providing your item is in stock and not made-to-order. APC will contact you via email with delivery information, and orders can be tracked on the APC website.

Premium or Expedited Service
For a premium or expedited delivery service, please get in touch to discuss if this option is available for your order.

For further information, see our delivery information page.


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