Limestone and Mortar: Material Logic at Saint‑Denis

Limestone varies by grain, porosity, and bedding. Mortars tune binding and breathability. Weather writes patterns — a slow script across centuries. Conservation is a dialogue with materials and time.

🧪 Material Notes

• Fine‑grain stone: Crisp carving; vulnerable to acid rain.
• Hydraulic lime: Stronger set; monitor salt cycles.
• Shelter coats: Sacrificial layers for exposed carvings.

🧰 Craft & Repair

• Stone selection: Respect bedding planes.
• Mortar matching: Color/texture compatibility for legibility.
• Documentation: Map pathologies before intervention.

Materials are time’s allies when we listen to them.