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Formula Building Technology Ltd.
Ballyvoodock House, Blackwater, Co. Wexford
Tel: 053 9127564
Fax: 053 9127562
Email: info@fbt.ie
Web: www.fbt.ie
"Poroton" is the industry name for a terracotta (fired clay) block, or "jumbo brick" manufactured to a high degree of accuracy.
These blocks are formed with a cellular structure of vertical perforations, that reduce the material in the block (and thus the weight) , whilst maintaing adequate strength and increasing the thermal resistance (lambda value) of the block.
       
The non-face ends of the brick are keyed with a vertical tongue and groove interlock, eliminating the need for mortar between vertical faces.
Additional thermal resistance is achieved by mixing sawdust into the clay before firing, resulting in micro-pores in the finished block. The inner and outer face of the block is keyed ready to accept plaster.
Poroton blocks are available as "plan blocks" - blocks that, subsequent to firing, have been planed to a tolerance of less than one millimetre. Plan blocks are suitable for thin-joint mortar systems, delivering faster construction times, reduced mortar usage, higher accuracy and better thermal resistance (U-value) of the finished wall.
Poroton blocks can be readily chased to accept wiring, can be easily cut accurately on site, and allow secure attachments to be made into the wall (pictures, shelves, etc).
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