Historical & Geological Context
Chaux aérienne en pâte (calcium lime putty) is produced by slaking quicklime with excess water and maturing it in subterranean pits for a minimum of 12 to 24 months. Setting strictly by carbonation (absorption of atmospheric CO2), it offers extreme vapour permeability, self-healing micro-fissuring, and natural antiseptic properties for historic wall finishes.
Petrographic & Geological Characteristics
Pure calcium carbonate limestone (CaCO3 > 98%) calcined at 900°C and wet-slaked into lime putty.
Lime Mortar & Breathability Compatibility
Sets strictly by carbonation (absorption of atmospheric CO2); maximum breathability and elasticity.
Provenance & Historical Sourcing
Pure limestone beds (>98% CaCO3) slaked in France.
Condition Report & Patina
Aged a minimum of 12 months; zero chemical additives or cement blending.
Chaux Aérienne Grasse en Pâte (CL-90-S)
Normandie, France (FR)
Non-commercial reference. Not sold or brokered by Le Cercle du Roi.
This material dossier is compiled from public geological surveys, heritage conservation research (BRGM, CTMNC, Historic England, Monumentenwacht), and historical treatises. Inclusion does not constitute a sales offer by Le Cercle du Roi.