Durableresistant wood for outdoor use

The product group includes natural and modified solid wood with documented good biological durability according to its intended use e.g., façade cladding or terrace decking. The biological durability of Nordic Swan Ecolabel wood refers to its ability to resist decay and damage caused by biological stresses such as fungi, insects, and bacteria.

Examples of wood products: Heartwood with natural resistance to biological agents, e.g. oak or larch, and thermally modified wood.

Nordic Swan Ecolabel biological durable wood has a reduced environmental and climate impact throughout its lifecycle. It meets strict requirements for raw materials, chemicals and durability, promoting circular economy.

The requirements include:

  • Use of wood that is legally harvested and traceable – and at least 70% of the wood is sourced from certified forestry.
  • Environmental and health properties of chemicals used in manufacturing of the product and in any surface treatment. Among others, the use of biocides and hazardous metals is prohibited.
  • Limits for energy use and ban on fossil oil and coal in the production of the product.
  • Documentation of good biological durability performance according to its intended use e.g., façade cladding or terrace decking.

Welcome to apply for a Nordic Swan Ecolabel licence!

This is how you do:

  1. Read the application guide.
  2. Log in to the Nordic Ecolabelling Portal.
  3. Start your application.

If this is the first time you are applying, the authorized signatory must fill in your company information and approve the application conditions. In this way, you get login to the portal and the right to assign access to other colleagues.

Some special cases can not be done in the Nordic Ecolabelling Portal. Contact your advisor for such cases. More information can be found on Application step by step.

Valid from 1/1 2026Amount excluding VAT
Application fee
Inspection of two wood types/treatment methods is included in the application fee.3 401 EUR
Inspection of aditional treatment methods/wood types1 699 EUR
Application for a renewed licence when the requirements have been tightened
Inspection of two wood types / treatment methods is included in the fee.1 699 EUR
Inspection of aditional treatment methods/wood types849 EUR

Annual licence fee

The licence fee for the Nordic Swan Ecolabelled products is based on their turnover in the Nordic region.

Up to 52.324 million EUR.0.3% of the products’ turnover
More than 52.324 million EUR.0.05% of the products’ turnover
Minimum fee in the Nordic region2 267 EUR per year.
Fixed fee applicable to turnover outside the Nordic region2 267 EUR per year for turnover exceeding 300 000 EUR.

Fee for extension / change of licence

If the extension concerns the review of a new type of wood, a fee of EUR 1 699 per wood type will be charged. Fixed fee that is charged depending on how long the work takes.

Up to 4 hours424 EUR
4-8 hours849 EUR
8 or more hours1 699 EUR

Fee for on-site inspections

One on-site visit within the Nordic region is included in the application for a new or renewed licence.

Additional on-site inspection within the Nordic region565 EUR per visit
On-site inspection outside the Nordic region, but within Europe1 699 EUR per visit
On-site inspection outside Europe2 834 EUR per visit
Additional fee for on-site inspections lasting longer than one day1 132 EUR per day

About the fees

For clarification of fees, click here.

Ecolabelling Sweden AB has no financial profit purpose and is financed through the fees above along with an annual government grant. The company is however liable for VAT according to article 56 of the European Council Directive 2006/112/EC.

Invoicing is made in SEK with the exchange rate from the first banking day of the year.

When both the applicant and the manufacturer are micro-enterprises, the application fee is reduced by 50%. A micro-enterprise is in this context defined as an enterprise with less than 10 employees and an annual turnover (of both ecolabelled and not ecolabelled products) below 2 million EUR.


Valid from 1/1 2025Amount excluding VAT
Application fee
Inspection of two wood types/treatment methods is included in the application fee.3 348 EUR
Inspection of aditional treatment methods/wood types1 673 EUR
Application for a renewed licence when the requirements have been tightened
Inspection of two wood types / treatment methods is included in the fee.1 673 EUR
Inspection of aditional treatment methods/wood types836 EUR

Annual licence fee

The licence fee for the Nordic Swan Ecolabelled products is based on their turnover in the Nordic region.

Up to 51.5 million EUR.0.3% of the products’ turnover
More than 51.5 million EUR.0.05% of the products’ turnover
Minimum fee in the Nordic region2 232 EUR per year.
Fixed fee applicable to turnover outside the Nordic region2 232 EUR per year for turnover exceeding 300 000 EUR.

Fee for extension / change of licence

If the extension concerns the review of a new type of wood, a fee of EUR 1 673 per wood type will be charged. Fixed fee that is charged depending on how long the work takes.

Up to 4 hours418 EUR
4-8 hours836 EUR
8 or more hours1 673 EUR

Fee for on-site inspections

One on-site visit within the Nordic region is included in the application for a new or renewed licence.

Additional on-site inspection within the Nordic region557 EUR per visit
On-site inspection outside the Nordic region, but within Europe1 673 EUR per visit
On-site inspection outside Europe2 790 EUR per visit
Additional fee for on-site inspections lasting longer than one day1 115 EUR per day

About the fees

For clarification of fees, click here.

Ecolabelling Sweden AB has no financial profit purpose and is financed through the fees above along with an annual government grant. The company is however liable for VAT according to article 56 of the European Council Directive 2006/112/EC.

Invoicing is made in SEK with the exchange rate from the first banking day of the year.

When both the applicant and the manufacturer are micro-enterprises, the application fee is reduced by 50%. A micro-enterprise is in this context defined as an enterprise with less than 10 employees and an annual turnover (of both ecolabelled and not ecolabelled products) below 2 million EUR.

Information on the latest version of the criteria for durable/resistant wood for outdoor use

On 2 June 2026 Nordic Ecolabelling adopted an adjustment in the energy requirements O16 and O17, specifying that internal transport and logistics is not part of the requirements. The new version is 3.3.

3.1 ⇛ 3.2: Adjustment of criteria

On 9 December 2025 Nordic Ecolabelling adopted an adjustment for metals in wood impregnation (O2) replacing former definition of heavy metals. The requirement for biological durability performance (O14) has been adjusted only referring to Use Class (UC) 3 instead of sub-classes 3.1 and 3.2. The requirement for Durability Class (DC) has also been adjusted from DC 1 to DC 2 for UC 3. The new version is 3.2.

3.0 ⇛ 3.1: Adjustment of criteria

On 19 August 2025 Nordic Ecolabelling adopted an adjustment in the requirement for energy consumption (O16), adding a fourth option for working with energy savings. It has also been clarified in requirement for biological durability performance (O13) that accelerated ageing test are to be in line with EN 73 or EN 84. The new version is 3.1.

3.0: Revised criteria

Nordic Ecolabel’s criteria for durable/resistant wood have been revised. The new version, 3.0, is valid until March 31, 2030.

2.9 ⇛ 2.10: Prolongation of criteria’s validity

On 14 April 2026 Nordic Ecolabelling decided to prolong the validity of the criteria to the 30 September 2026. The new version is called 2.10.

2.8 ⇛ 2.9: Prolongation of criteria’s validity

Nordic Ecolabelling decided on December 9, 2025, to prolong the validity of the criteria. The new version, 2.9, is valid until May 31, 2026.

2.7 ⇛ 2.8: Prolongation of criteria’s validity

Nordic Ecolabelling decided on October 15, 2024, to prolong the validity of the criteria. The new version, 2.8, is valid until February 28, 2026.

2.6 ⇛ 2.7: Adjustment of criteria

Requirement O3, biocides has been adjusted: only preservatives used for preservation in cans in accordance with PT 6 (EU) 528/2012 can be used in chemical products. The amount of preservative/preservative combination is limited.

The new version is called 2.6 and is valid until 31 December 2025.

2.5 ⇛ 2.6: Prolongation of criteria’s validity

The validity of the criteria  has been extented with 24 months. The new version, 2.6, is valid until 31 December 2025.

2.4 ⇛ 2.5: Adjusted criteria

Requirement O11B has been adapted to the new forestry requirements adopted by the Nordic Ecolabelling Board on 2 June 2020. The new version is called 2.4.

2.3 ⇛ 2.4: Prolongation of criteria’s validity

The validity of the criteria  has been extented w3ith 24 months. The new version, 2.4, is valid until 31 December 2023.

2.2 ⇛ 2.3: Prolongation of criteria’s validity

The validity of the criteria  has been extented with 24 months. The new version, 2.3, is valid until 31 December 2021.

2.1 ⇛ 2.2: Adjusted criteria

Two adjustments have been introduced:

  • Data on energy use (MJ/m3 dried wood) shall, as far as possible, be given by suppliers / sawmill. The adjustment also implies that moisture content in raw material and final product shall be given.
  • References to the classification of health and environmental hazards in accordance with the Dangerous Preparations Directive (1999/45/EC) has been removed, due to the replacement by the CLP Regulation.

The new version is called 2.2.

2.0 ⇛ 2.1: Adjusted criteria

Two adjustments have been introduced:

  • Wood with natural durability is a part of the product group and requirement O14 is clarified with how wood with natural durability shall verify the requirements on durability.
  • Due to new classifications for two chemicals used in the process to chemically modify wood, the requirement O4 are completed with more exemptions (the classification Acute toxicity and Specific target organ toxicity for furfuryl alcohol and the classification Specific target organ toxicity for maleic acid anhydride).

At the same time, the new requirements on forestry were introduced as an alternative way to fulfill the wood requirements. The new forestry requirements implicate that the licence holder must be Chain of Custody-certified.

The new version, 2.1, is valid until December 31st 2019.

1.5 ⇛ 2.0: Revised criteria

Nordic Ecolabel’s criteria for durable/resistant wood have been revised. The new version, 2.0, is valid until December 31st 2019.