A quality system built on trust, durability and fair competition
NTR is the quality system for industrially treated and modified wood. It exists to ensure that durable wood products placed on the market meet clearly defined requirements for performance, consistency and reliability, verified through independent third-party control.
For producers, NTR is not only a technical standard. It is a market framework that supports long-term trust, predictable requirements and equal conditions for competition.
Market trust and recognition
The NTR mark is the most recognised durability mark for treated wood in Norden Europe and is increasingly referenced beyond it. It signals that the product:
- is produced under controlled industrial conditions
- meets defined durability and performance requirements
- is subject to independent and continuous quality control
This recognition creates confidence among professional buyers, retailers, authorities and end users, reducing uncertainty and supporting long-term demand for durable wood products.
Clear and predictable requirements
The NTR system is based on Nordic experience and harmonised with European standards. Requirements are defined in publicly available NTR documents and applied consistently across all producers.
This gives producers:
- predictable technical and quality requirements
- a stable framework for investment and production planning
- protection against unfair competition from sub-standard products
The system is designed to evolve in line with legislation, standardisation and market needs, while maintaining continuity and transparency.
Independent third-party quality control
NTR certification is based on independent third-party audits performed by approved control bodies. This separation of roles safeguards impartiality and credibility.
For producers, this means:
- objective verification of compliance
- equal treatment across countries and markets
- strengthened credibility towards customers and authorities
Independent control is a core element of the NTR system and a key reason for its long-standing market trust.
Fair competition and equal conditions
The NTR system applies the same principles to all producers, regardless of size or geographic location. Producers operate under the same quality framework and marking rules.
This ensures:
- a level playing field in the market
- fair competition based on quality and performance
- transparency in obligations and rights
NTR supports competition on quality, not on reduced requirements.
Support for long-term business value
Durable wood is a long-life building material that supports sustainability, circular economy principles and responsible resource use. The NTR system strengthens the credibility of durable wood as a preferred material in construction and infrastructure.
For producers, NTR contributes to:
- stronger customer relationships
- reduced risk of claims and disputes
- alignment with sustainability and regulatory expectations
- long-term brand and product value
NTR in summary
NTR is chosen by producers who want to operate in a transparent, controlled and trusted quality system.
It stands for:
- durability defined by clear requirements
- quality verified through independent control
- trust built over decades of Nordic cooperation
Next step
Learn how your production can become part of the NTR system.
