What is a Declaration of Performance (DoP) for timber?

A Declaration of Performance is a legal document required under the Construction Products Regulation (CPR) for all CE/UKCA-marked structural timber. It declares the essential characteristics of the product including: strength class, reaction to fire class, formaldehyde emission (if applicable), and durability.

A Declaration of Performance is a legal document required under the Construction Products Regulation (CPR) for all CE/UKCA-marked structural timber. It declares the essential characteristics of the product including: strength class, reaction to fire class, formaldehyde emission (if applicable), and durability. The DoP is issued by the manufacturer and must be available for every batch of structural timber delivered to site. It provides the legal basis for using the timber in structural applications and must be retained as part of the building's quality records. Request the DoP from your supplier with every delivery.

Why this matters

This question relates to Timber Quality Control: Inspection, Grading & Acceptance Criteria, which covers the broader topic in detail. Understanding this specific aspect helps architects, builders, and timber dealers make informed specification decisions.

For full context and additional technical detail, see our comprehensive guide:

→ Timber Quality Control: Inspection, Grading & Acceptance Criteria

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About this answer

This answer is part of the PuurModulair Knowledge Base — comprehensive timber specification guidance for architects, builders, and dealers across the UK, EU, and Scandinavia.