Approved Document C: Site Preparation and Resistance to Contaminants and Moisture – Variant 2

This statutory guidance document provides the essential regulatory framework for site preparation and moisture resistance in Wales. Approved Document C outlines the mandatory requirements for building projects regarding site preparation, the mitigation of contaminants, and the prevention of moisture ingress. It covers two primary areas: C1, which focuses on the safe preparation of building sites to manage pollutants, and C2, which details necessary resistance to moisture from the ground, weather, and internal sources. The document provides architects, engineers, and contractors with the technical standards required to ensure structural compliance and building safety. It serves as a definitive reference for achieving regulatory approval within the Welsh jurisdiction for various construction typologies.

The download is a 2.5 MB file with the texture set at 2K, ready for any metal/roughness PBR workflow in Blender, 3ds Max, SketchUp, Unreal Engine or D5.

Practitioners use this PDF as a primary reference tool during the design and technical specification phases. It is typically integrated into the project documentation workflow to ensure that all construction details, such as damp-proof courses and ground gas protection systems, meet statutory requirements. By referencing these standards, professionals can accurately specify materials and construction methods, ensuring that site-specific risks are appropriately addressed. The document is essential for preparing planning applications and building control submissions, providing clear guidance for maintaining compliance throughout the project lifecycle.