Master Substrate Registry (M-Codes)

ATH

A Victorian lime-mortar wall, modern silicone render and engineered brick are entirely different materials that must be cleaned in entirely different ways — yet most cleaners treat them the same. The Master Substrate Registry (M-Codes) is our catalogue of building materials and how each behaves under moisture, growth and cleaning, so the method always follows the material in front of us.

The Master Substrate Registry (M-Codes) is the ATH Codex volume that quantifies the substrate — the catalogue of building materials as biological and chemical hosts. It establishes the neuro-symbolic bridge that lets the COSMOS logic engine translate physical decay into machine-readable data, cataloguing the order of 250 M-Codes (with around 200 paired COMP- composite codes) spanning stone, brick, render, timber, metal, glass and polymer fabric. Each M-Code carries the substrate's vulnerability attributes (feeding the SVI) and its interaction behaviour with the organism registries, so a property's real construction — not a generic surface — drives the diagnosis and the chosen protocol.

substrate vulnerability

The Master Substrate Registry (M-Codes) is the ATH Codex volume that quantifies the substrate — the catalogue of building materials as biological and chemical hosts. It establishes the neuro-symbolic bridge that lets the COSMOS logic engine translate physical decay into machine-readable data, cataloguing the order of 250 M-Codes (with around 200 paired COMP- composite codes) spanning stone, brick, render, timber, metal, glass and polymer fabric. Each M-Code carries the substrate's vulnerability attributes (feeding the SVI) and its interaction behaviour with the organism registries, so a property's real construction — not a generic surface — drives the diagnosis and the chosen protocol.