DoP

Here’s a detailed overview of the Declaration of Performance (DoP) specifically for timber products, based on EU regulations and industry best practices:

🌲 Timber DoP Essentials

A timber DoP is required for CE-marked structural timber products under the Construction Products Regulation (EU) No. 305/2011, now updated by Regulation (EU) 2024/3110. It applies to products like:

• Solid structural timber (e.g. joists, studs, rafters)

• Glued laminated timber (glulam)

• Finger-jointed timber

• Roof trusses

• Laminated veneer lumber (LVL)

📄 What a Timber DoP Must Include

According to Wood Technology Ireland:

• Product type and intended use (e.g. load-bearing in buildings)

• Manufacturer details (name, address, contact)

• AVCP system (usually System 1 or 2+ for structural timber)

• Declared performance for essential characteristics:

  • Strength class (e.g. C16, C24)

  • Moisture content

  • Density

  • Reaction to fire

  • Durability

• Reference to harmonized standards:

  • EN 14081-1: Strength-graded structural timber

  • EN 14080: Glued laminated timber

  • EN 14250: Prefabricated roof trusses

• Unique reference code linking to CE mark

• Signature and date by the manufacturer

🛠️ Tips for Timber Manufacturers

• Ensure your timber product complies with a harmonized standard (hEN) or has a European Technical Assessment (ETA).

• Maintain DoP records for at least 10 years after the product is placed on the market.

• Use “NPD” (No Performance Determined) only when a characteristic is not required by regulation.

Would you like help drafting a sample DoP for a specific timber product like Siberian Larch cladding or glulam beams?