Mass-lightened clay block. The addition of wood flour to the raw mix creates a dense network of micropores during firing. Combined with the complex geometry of cells, it offers exceptional thermal insulation and massive inertia in a single load-bearing element.
Cross-section of a porous block. The staggered vertical cells force heat into a zigzag path, while micro-pores of burned combustibles provide additional distributed insulation.
The porous block represents the high-tech evolution of the traditional brick. It combines the mechanical strength and secular durability of terracotta with the most modern thermal insulation needs, creating single-layer walls that often do not require an external ETICS coat.
Combustible microparticles mixed into raw clay burn during firing at 1000°C, leaving spherical micro-cavities full of still air. Combined with staggered vertical cells forcing heat into a tortuous zigzag path, this virtually doubles the real insulating thickness.
Unlike dry walls, porous block masonry retains considerable mass, providing exceptional thermal phase shift. Thicker blocks allow single-layer load-bearing walls without added insulation, guaranteeing robust, breathable walls.
European and international references applicable.
Porous blocks must be cut with diamond disc saws or angle grinders, never with percussion. Mortar joints can be thin-bed (1-3 mm) for rectified blocks, guaranteeing thermal continuity without mortar bridges.
Thick walls (38-45 cm) plastered internally and externally, meeting thermal requirements without added ETICS.
PRC.06 · Open the processClosing of openings in reinforced concrete frames, providing lightness and facade acoustic reduction.
PRC.33 · Open the processBlocks with vertical channels for steel reinforcement and concrete casting in high seismic zones.
PRC.33 · Open the processReduced thickness blocks (8-12 cm) for internal divisions, superior to drywall for fixing heavy loads.
PRC.33 · Open the processThe continuous evolution of cell geometry has allowed porous clay blocks to equal modern stratified walls, guaranteeing transmittance well below the regulatory limit for passive houses (nZEB).
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