
About the product
Kerakoll Biocalce Pintura is a certified wall paint based on pure CL 90-S lime putty, in accordance with standard EN 459-1, and natural colored earths. Free from volatile organic compounds, chemical additives, and synthetic preservatives — only raw materials of strictly natural origin. It allows the wall to breathe, regulates environmental humidity, and acts as a natural bacteriostatic and fungistatic classified B+ and F+ (CSTB method). Indoors, it creates healthier environments; outdoors, it gives facades the aged appearance of old lime paints. Available in 61 natural colors and in 4L and 14L formats.
What kind of projects is it ideal for?
- ✓ Decoration of interior renders where maximum breathability and a healthy environment are sought
- ✓ Exterior facades with a matte mineral finish and an antique lime effect
- ✓ Restoration and rehabilitation of historic and heritage buildings
- ✓ Sensitive spaces: homes, schools, hospitals, nurseries, or health centers
- ✓ GreenBuilding projects and ecological construction with natural origin materials
- ✓ People with allergies, multiple chemical sensitivities, or those seeking toxic-free environments
Why choose Kerakoll Biocalce Pintura
- ✓ 100% natural — zero VOCs — formulated exclusively with pure CL 90-S lime putty, natural earths, and colored minerals; without solvents, synthetic preservatives, or volatile organic compounds
- ✓ Breathable wall — its microporous structure allows for the exchange of water vapor between the interior and exterior, preventing condensation, dampness, and paint detachment
- ✓ Natural bacteriostatic and fungistatic B+ F+ — CSTB classification certifying its ability to inhibit the proliferation of bacteria and fungi without the need for synthetic biocides
- ✓ Active natural ventilation — contributes to the dilution of indoor pollutants and improves air quality, supported by European Commission data on Kerakoll BIO renders
- ✓ Compliant with EN 459-1 and GreenBuilding — certified wall paint that meets sustainable construction standards; ideal for projects requiring environmental certification
- ✓ 61 natural colors — a palette of earth tones, warm whites, and mineral shades that reproduce the authentic look of old lime paints; available in a matte mineral finish
- ✓ Interior and exterior — indoors it creates healthier environments; on facades, it provides that aged and aesthetically prestigious effect characteristic of lime-coated buildings
Where to apply it
How to apply it — in 4 steps
- Prepare the substrate: clean and sanitize the surface. Old renders must be well adhered to the wall structure. If the substrate is uneven or micro-cracked, first apply Biocalce Fondo. Do not apply on fresh, dirty, dusty substrates, or on old, non-cohesive paints.
- Homogenize the product: stir well before use. The first coat can be diluted with clean water up to a maximum of 40% of the volume to improve penetration into the substrate.
- Apply 2 cross coats with a brush or roller, allowing at least 12 hours drying time between coats. Touch dry time is approximately 4 hours. The second coat does not require dilution.
- Clean tools with water before the product hardens. Once set, cleaning with water is not effective.
Do not apply at temperatures below +5°C or above +35°C, nor under direct sun or strong wind. Protect the application from rain for the first 24 hours.
Technical specifications
| Base | Pure CL 90-S lime putty (EN 459-1 standard) |
| Finish | Matte mineral with natural lime effect |
| VOCs | 0 g/L — no volatile organic compounds |
| Antibacterial / anti-mold | Bacteriostatic B+ and fungistatic F+ (CSTB method) |
| Viscosity | 33,000 cp ± 500 cp (Brookfield RVT6 RPM10) |
| Coverage | ≈ 0.2 – 0.3 L/m² in two coats (over Biocalce Revoco Fino) |
| Touch dry time | ≈ 4 hours |
| Time between coats | ≈ 12 hours |
| Available colors | 61 natural colors (type C — mineral finishes based on lime) |
| Application | Brush or roller (dilutable with water up to 40%) |
| Use | Interior and exterior |
| Formats | 4 L / 14 L |
| Shelf life | ≈ 12 months in original sealed container |
GreenBuilding and Historic Restoration Certification
Biocalce Pintura is certified as suitable for GreenBuilding projects and for the restoration of historic buildings, where the choice of traditional components — natural lime, natural earths, and minerals — guarantees interventions that respect existing structures and original materials. Initial data from the European Commission confirm that Kerakoll BIO line renders improve indoor air quality.
Application conditions and unsuitable substrates
Do not apply on fresh (not dry), dirty, non-cohesive, or dusty substrates, nor on old paints or uncleaned old stucco. Also, do not apply under direct sun, strong wind, temperatures below +5°C or above +35°C, or with rain expected within the next 24 hours. Failure to comply with these conditions may compromise the final result and product adhesion. Always consult the official Kerakoll technical data sheet before application.



















