RC KALEI

RC KALEI is a mineral micromortar based on natural hydraulic lime NHL 3.5 from Saint-Astier, enriched with carefully selected mineral fillers. Designed as a thin 2–4 mm coating, it provides traditional protection for façades made of brick and natural stone.

Completely free of cement, RC KALEI delivers an authentic finish in the pure tradition of historical limewash systems. Thanks to its natural formulation, it is the ideal solution for restoration and heritage renovation projects.

In humid conditions, the coating may show characteristic limewash marks, typical of traditional lime-based systems without cement. The optimal balance between NHL 3.5 lime, grain size distribution and mineral fillers ensures high performance in exterior façade restoration.

• 0% cement – fully mineral formulation.
• Made with natural hydraulic lime NHL 3.5 and mineral fillers.
• Suitable for interior and exterior walls.
• Provides an authentic, traditional appearance.
• Ensures excellent breathability and natural moisture regulation.
• Allows salt migration without deterioration.
• Compatible with siloxane paints, with no risk of blistering.
• Can be further protected through hydrophobic treatment.
• Sd-value < 0,031 m – optimal water vapour diffusion.

• Vapor permeability inhibitory
• No elastic properties
• Not moss-killing
• Higher risk of shrinkage
• Not self-healing
• Sensible to salt

Delivery form: Beige powder

Density: 1.3 kg/dm³

Binder: Natural hydraulic lime (NHL 3.5) from St. -Astier

Additives: Mineral fillers

pH (solution in water): 12

Grain structure: 0.05 to 0.63 mm

Colours: See color gamut (can be coloured at the factory on request)

Workability: 3 hours (depending on temperature)

Curing time: 2 to 3 months due to carbonation (depending on weather conditions)

SD value Less than 0.031 m

25 kg bag - 42 bags on a pallet.

‍EAN code: 05430002623146

‍