What is Porotherm?

Porotherm is a modern clay block structural walling system offering fast, virtually dry construction, thanks to its mechanical vertical joints and true 1mm bed joint technology.  

The system has been developed and used throughout Europe on numerous buildings during the last 30 years. Wienerberger is the largest clay block manufacturer in the world and, utilising extensive technical expertise and experience, have tailored this multi-functional building system for the UK.

The Porotherm System is normally used as the inner-leaf of a cavity wall and also as single leaf (monolithic) construction. It can be used in load bearing and non-load bearing applications. Correctly designed and constructed walls can be expected to have a design life beyond 150 years.

Porotherm is a complete system with outstanding environmental properties that is both cost-effective and time-efficient to install and offers an energy efficient and comfortable living space for generations to come.

• Faster construction, earlier completion 
• NHBC accepted as an outer leaf of cavity walls protected by render 
• NHBC accepted as an inner leaf of a cavity wall and as an internal wall 
• LABC accepted as an inner leaf of a cavity wall and as an internal wall 
• Precision ground/planed blocks mean 1mm bed joints 
• Fast setting joints mean virtually unrestricted build heights 
• Low weather dependency 
• Virtually dry-fix approx 95% less water than traditional masonry 
• Earlier access for finishing trades 
• Outstanding thermal insulation and vapour permeability 
• Good thermal mass characteristics 
• Little need for movement joints to restrict shrinkage and cracking early finishing Complete system plus prefabricated wall panels 
• Porotherm blocks comply with BS EN 771-1:2003 
• CERAM UK validation report received - BS and Building Regulations compliant 
• A1  fire protection 
• Proven in Europe over 30 years 
• Environmentally friendly and sustainable 
• Typically 20-30% MARSS recycled content 
• Low water usage during construction 
• Typical lifespan >150 years, 
• Low life cycle costs 
• Satisfies UK Building Regulations 
• Replaces concrete blocks, timber and light steel frames 
• Thermal mass minimum 96kg/m2  

Darren White Director of Sales commented 'With an increasing number of developments using Porotherm,  especially within residential developments, Wienerberger  has  increased its technical support services with the appointment of Betts Associates, recognised as one of the best known structural engineering companies in this sector with many years experience to provide us with this new expert, responsive service.'

 As such we are delighted to be associated with this new client and looking forward to being involved in many developments as the news of the benefits of Porotherm spreads throughout the UK.

For more information visit the Wienerberger website.