POROTHERM CAVITY

CONTENTSIntroducing Porotherm What is Porotherm? 4-5 Build Quicker. Build Smarter. Build Better 10 Case Study

INTRODUCING POROTHERM. BUILD QUICKER. BUILD SMARTER. BUILD BETTER. Porotherm is a multi-cellular clay block walling system designed with efficiency and performance in mind. The horizontal bed faces are engineered to provide +/- 0.5mm tolerance which allows the use of a 1mm thin layer mortar. The unique interlocking vertical joints do not require mortar. The system has been expertly designed as a solution for any number of common construction requirements, including: ■ Inner leaf brick-faced cavity walls ■ Inner and outer leaves of rendered cavity walls ■ Infill panels within framed structures...

W H Y C L AY ? Understanding the natural material benefits At Wienerberger we believe in the benefits of building with clay. It is the ideal raw material for long-lasting, low impact construction projects. At the forefront of our industry for over 5,000 years, the advantages of clay are many and varied, covering every aspect of modern building. Economic A building structure made of clay blocks can be constructed quickly, saving both time and money during construction. Due to the durability and stability of buildings comprising of clay materials, maintenance costs are low and assets typically...

THE UK RANGE The Porotherm range covers all your requirements for load bearing and non-loadbearing inner and outer leaves, for thermal efficiency and structural integrity as well as providing both partition and party wall acoustic requirements. All blocks provide a range of benefits including: Fewer blocks per m² compared Fewer cuts requiring pointing Fewer perpends per m², aiding air tightness once parged Versatility - one block meets all requirements to standard sized blocks Less wastage

Block Type Weight Pack (inc pallet) kg Unit Gross Density kg/m3 Wall Typical Air Tightness (Parged) m3/(h.m2) Typical Mean Unit Compressive Strength N/mm2 Typical Characteristic Masonry Strength fk(N/mm2)

BUILD QUICKER. Weathertight external work zero degrees with ZeroPlus mortar BUILD SMARTER. Achieve cost certainty £ with options for cavity and monolithic Less waste and less stock on site lowers costs Uses less water Interlocking construction than traditional with no mortar on vertical BUILD BETTER. Cradle to Cradle acoustically efficient wall types

Porotherm delivers cost savings across the whole project, thanks to its speed, efficiency and safety benefits. Projects can be completed more accurately and quickly, with less wastage. Speed of laying Compared to other methods Porotherm precision clay blocks can be laid significantly faster, delivering time-saving benefits. Optimise your stock All blocks within the cavity wall range have a mean compressive strength of 10N/mm², providing solutions for all applications. This reduces the variety of block types and strengths required on-site. Efficiency in the build programme Although the price per...

FA ST E R . More speed. No compromise. Our Porotherm multi-cellular clay block walling system is a faster way of building. But increasing the build speed doesn’t come with any compromise in performance or longevity – it’s simply a reflection of the system’s engineering and design. Engineered blocks with roller applied thin layer bed mortar and interlocking perp-ends ensure speed and quality of construction The ability of inner leaf build allows early roof installation and ensures a weathertight structure to allow parallel working for internal and external trades, thereby reducing overall build...

MORE EFFICIENT.Less resource. More performance.Porotherm’s efficiency does not simply come from speed of construction, it is also cleaner and safer than traditional methods. Porotherm's engineered interlocking perp-end system, the use of thin layer mortar which is mixed in required quantities, alongside the construction, provides savings of up to 95% in water demand and 93% in mortar usage. ■ The clay blocks can be used to build a thermally and acoustically efficient wall that’s both breathable and Class A1 fire resistant ■ There is no moisture shrinkage at all with movement provision not needed...

I N S TA L L AT I O N Here is a quick overview of the Porotherm multi-cellular clay block walling system installation process. Lay the first course on a traditional sand-cement mortar bed Ensure blocks are level, horizontal in both directions and vertically plumb. This is crucial because there is only a 1mm bed joint thereafter Mix ZeroPlus according to manufacturer’s instructions Apply ZeroPlus to blocks with a roller Repeat until the wall is complete For a detailed understanding of the Porotherm System in regards to technical information and on-site support, including fixtures and accessories,...

CASE STUDY

First built in 1826, the Grade II listed Blackburn Cathedral is one of the most iconic houses of worship in Northern England. The site of the Cathedral, which was officially consecrated in 1977, has been a place of worship for over a thousand years, dating back to the Norman era, when it became home to the first stone church. Fast-forward a millennium and in June 2012, the Cathedral embarked on another ambitious first, announcing an £8.5 million plan to construct a clergy court and cloister garth - the first of its kind in the UK for over 570 years. With the historical importance of Blackburn...

Porotherm’s performance regarding thermal, strength and density also meant that one block type suited all requirements, which reduced storage requirements and ensured easy access for building professionals onsite. From both a speed of build and an aesthetic point of view, the Porotherm system surpassed the expectations of both contractor and architect. The speed of the system was exemplified on the Dandy Walk elevation, which required fast completion in order for public highway works to begin. This could not have been completed in the timeframe using traditional building methods. The precise...