Certified, eco-compatible, NHL 3.5 natural pure lime plaster made from natural lime, compliant with EN 459-1 standard, for highly breathable plastering, ideal for GreenBuilding as well as monument restoration.

Contains only naturally derived raw materials and recycled minerals. Has low CO2 and very low volatile organic compound emissions. Naturally ventilated, actively dilutes indoor pollutants, and has natural antibacterial and antifungal properties. Can be recycled as inert waste.

Kerakoll Biocalce Zoccolatura is particularly suitable for the restoration of masonry exposed to bulging, erosion, and detachment caused by environmental effects and the degrading impact of salt concentration due to capillary moisture penetration.

• Natural, porous, and highly breathable, allowing the wall to breathe freely
• Highly resistant to salts, high evaporative capacity, low capillary water absorption
• Bacteriostatic and fungistatic product (CSTB method)**
• WTA certified

High Tech

• Water vapor diffusion resistance factor (μ) ≤ 3, EN 1015-19
• Capillary water absorption W24 ≥ 0.3 kg/m2, EN 1015-18
• Water infiltration depth within 24 hours ≤ 5 mm, EN 1015-18
• Porosity ≥ 40%, WTA 2-2-91/D
• Fire resistance - Class A1, EN 13501-1
• Compressive strength after 28 days - CS II category, EN 998-1
• Compressive/flexural strength ratio ≤ 3, WTA 2-2-91/D
• Resistance against capillary action - fulfilled, WTA 2-2-91/D

Areas of application

Breathable plastering for the regeneration and protection of hollow and solid bricks, tuff, stone, and mixed masonry damp and saltpetre-affected walls, both exterior and interior. For the restoration of external plinths exposed to spotting, bulging, erosion, and detachment caused by the degrading effect of salt concentration due to constant environmental influences and capillary moisture penetration.

Biocalce Zoccolatura is particularly suitable for moisture-absorbing plaster and base formation in Edilizia del Benessere®, where the strictly natural origin of its components ensures the essential parameters of prescribed porosity, hygroscopicity, and breathability.

A Biocalce Zoccolatura is suitable for natural breathable restoration in monument conservation, where the consciously dosed traditional components, such as natural lime, natural pozzolan, stone, marble, and granite, ensure preservation interventions that respect the existing structures and original materials.