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Porotherm Clay Blocks
EH Smith have formed an alliance with leading manufacturer Wienerberger to stock and supply the clay block walling system, Porotherm. Using a series of supply partners from around the UK, EH Smith have built a nationwide supply network ensuring that builders, contractors and other construction professionals have access to a comprehensive and reliable service.

More Information

The precision ground clay blocks feature unique interlocking edges for exceptional rigidity. When combining this feature with the use of the special Porotherm bed joint mortar builders are able to realise a significant reduction in overall build time. The advanced adhesive technology within the mortar also helps improve overall wall strength. Externally this is typically finished with a render or cladding system; whereas internally a more traditional plaster, or plasterboard over an initial parge coat, is normally used. For more information visit our Porortherm website.


Porotherm clay blocks are set to revolutionise the UK construction industry through exceptionally fast, virtually dry construction. The walling system is widely used and has been proven in Europe for over 30 years.

Porotherm Benefits

The entire process of building with Porotherm clay blocks means areas of wall can be constructed very quickly. Laid by hand, the Porotherm walling system is precise, simple and fast. By using each specially designed component in series, larger areas are built in a given time dramatically outperforming traditional methods of wall construction. Even though assembly methods are extremely easy to understand, EH Smith are able to offer full training to masonry contractors in order to increase efficiency further.

  • No mortar in the vertical joints
  • Up to 5x faster than traditional blockwork
  • 10m² per MAN per HOUR is achievable
  • 95% less water used in construction
  • Reduced time to a water-tight seal
  • Quicker availability for finishing trades
  • 1mm beds means minimal use of bed joint mortar
  • Thermally efficient
  • Acoustically efficient
  • Lightweight compared to aggregate blocks
  • Less repetitive strain - teams maintain safe production
  • Reduced dermatological risk
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*Please check individual branch page for seasonal opening hours

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