One System, Full Design Flexibility: How PAROC Tento Boards Revolutionize Ventilated Facades

Designing ventilated facades is standard in modern construction, but their proper implementation demands an uncompromising approach to building physics. Uncontrolled heat loss and the risk of mechanical damage to insulation during substructure assembly are challenges requiring proven system solutions.

To ensure the facade maintains its thermal parameters throughout the building's lifecycle, applying an appropriate thermal barrier is crucial. Choosing innovative PAROC Tento stone wool boards allows designers and contractors to use a material that facilitates seamless installation and ensures the highest energy efficiency. Moreover, while ventilated structures require free air circulation, the optimal structure of PAROC boards effectively eliminates the risk of convective cooling within the insulation layer itself.

The phenomenon of convection, involving the ingress of cold air from the ventilation space deep into the material's structure, is a primary enemy of thermal insulation. PAROC Tento boards effectively and permanently eliminate this problem, offering exceptionally low air permeability at l = 30 × 10⁻⁶ m³/(m²·s·Pa) and an impressive declared air flow resistance (AFR) of 30 kPa·s/m². Combined with an excellent thermal conductivity coefficient of λ = 0.033 W/mK, these solutions create an extremely airtight barrier, ensuring stable thermal comfort inside the building even during the coldest months of the year.

Crucially, this excellent wind protection goes hand-in-hand with the natural "breathing" of the partition. Trapping moisture within the wall is a very risky design error. For this reason, high-class PAROC stone wool features a low diffusion resistance (µ = 1), enabling free and uninterrupted passage of water vapor directly into the ventilation gap, which is standard in ventilated facades. Rapid evaporation of accumulated moisture provides reliable protection for the structure against degradation and dangerous biological corrosion.

Another important aspect determining the final facade quality is preventing thermal bridges at the fasteners. Installers regularly encounter significant difficulties during the mounting of substructure consoles or mechanical installations, where too soft a substrate easily undergoes permanent deformation. Dents forming around mounting points open the way for undesirable energy loss, thereby reducing the overall energy efficiency of the building. To definitively eliminate this problem and maximize ease of work for professionals, PAROC engineers focused on increased compressive strength, which in the innovative Tento boards is 5 kPa (CS(10)5) – at 10% deformation. The rigid, compact, and extremely solid structure of the stone wool.