Brand Alfa Allround vapour control layer for an airtight building shell Alfa Rufol varia is the humidity regulating and re-drying allround vapour retarder for an airtight building shell at new buildings and renovation (thermal insulation). Due to its re-drying potential, more safety is given against construction damages. Alfa Rufol has a fixed sd-value of 1-3 m (2 ± 1 m) and meets the requirements of ZVDH and EnEV! 3 applications, one product! Alfa Rufol varia is flexible in use and applicable for between the rafter (interior & exterior) as well as for above the rafter insulation on the warm side. Easy handling: Auxiliary lines allow exact overlaps. Advantages Meets the requirements of ZVDH and EnEV! Improved quality (110 ± 10% g/m²) Higher tear resistance (nail) (lengthwise 140 N, crosswise 180 N) Suitable for new building and reconstruction Humidity regulating special coating Re-drying potential in the summer Prevents spontaneous condensation in winter Fixed sd-value between 1-3 m (2 ± 1 m) Fire behaviour class E Temperature resistance -40 up to 80°C Watertightness passed (EN 1928)
