Saint Astier
Natural NHL hydraulic lime produced in France since 1851, grades NHL 2, NHL 3.5 and NHL 5.
Saint-Astier is a French family-owned company that has been manufacturing natural hydraulic limes and mortars since 1920 from the limestone rock at its quarry in Saint-Astier (Dordogne). Thanks to the unique composition of this limestone, they obtain NHL2, NHL 3,5 and NHL 5 hydraulic limes through controlled firing without additives or cement. Its mortars are flexible, vapour-permeable and compatible with old substrates; they reabsorb the CO₂ emitted during manufacture and are reusable and recyclable. The range includes binders and mortars for construction, renders, injections, flooring and hemp concrete, used both in heritage restoration and natural building. Eco-matériaux range (expanded 2025): insulating chaux/chanvre mortars (lime+hemp), Béton de chaux/liège (lime+recycled cork, for floors), and NOVASKIN® Thermo Plus, a 100% mineral insulating sub-render made of hydraulic lime and recycled expanded glass (λ=0.0793 W/mK, COFRAC-certified lab). In 2025 the company announced a €40M investment in a new decarbonised plant in Saint-Astier: coal replaced by natural gas (2028) then biogas (2030), targeting −25% carbon footprint by 2030 and −45% by 2040 (sources: L'Usine Nouvelle, Le Moniteur, Jun-2025). Per Valérie Auger (Sales Manager Iberica, Jul-2026), the updated internal target is −30% CO₂ emissions short-term, aiming for carbon neutrality by 2035.
No disponible
Polvo de cal hidráulica grados NHL 2, NHL 3.5, NHL 5
Cal hidráulica natural. Baja capilaridadalta transpirabilidad. Inmune a sulfatos y salesapta agua marina.
EPD/FDES: mortero de cal NHL 3,5 (revoco/enduit 10 mm), INIES 20240237049, GWP A1–A3 = 1,89 kg CO₂eq/m² (verificado, vinculado en EPDs_importadas). La gama Eco-matériaux (chaux/chanvre, béton de chaux/liège, Novaskin Thermo Plus) tiene FDES propia según saint-astier.com pero sin cifras numéricas publicadas en las páginas de producto consultadas (jul-2026) — pendiente conseguir el PDF de cada FDES. Plan de descarbonización de planta (40 M€, −25%/2030, −45%/2040) según prensa sectorial (L'Usine Nouvelle, Le Moniteur, Batiweb, jun-2025); cifra de −30% a corto plazo y neutralidad 2035 según comunicación directa de Valérie Auger (Sales Manager Iberica), jul-2026 — no verificada en fuente pública, citar como declaración del fabricante.
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Upgrade your listingTechnical questions and answers
- What is the carbon footprint (GWP) of Saint Astier?
- Saint Astier declares a GWP (A1–A3) of 1.89 kg CO₂e/m² according to its verified EPD.
- What is the fire resistance of Saint Astier?
- The declared fire performance of Saint Astier is No disponible.
- Does Saint Astier have an Environmental Product Declaration (EPD)?
- Yes. Saint Astier has a verified EPD (INIES 20240237049) under EN 15804+A2 / NF EN 15804+A2/CN.
Values as declared by the manufacturer or its EPD. Always check the current EPD/technical sheet for project-critical calculations.
