Selling insulation to Dutch contractors? Your stock must change

If you sell building materials to Dutch contractors, your stock needs to change. From 1 July 2026, new environmental rules in the Netherlands will make it harder to use traditional insulation [5]. Contractors must prove their projects meet strict environmental performance limits [2, 5]. This means they will demand different products, especially bio-based materials like wood fiber or cellulose. If you do not have the right data for these products, you risk losing your trade customers.

On 1 July 2026, the Dutch framework for calculating the environmental performance of buildings, known as the Milieuprestatie Gebouwen (MPG), undergoes a fundamental transition [2, 5]. According to official documentation published by the Dutch Information Point Leefomgeving (IPLO), the calculation method will align with the European standard EN 15804:2012+A2:2019 [5]. This change is not merely administrative. The number of environmental impact categories used to assess a building material will expand from 11 to 19 [2, 5].

For traders supplying the Dutch market, this expansion has an immediate consequence. In a publication dated 13 May 2026, the Dutch Ministry of Housing (Volkshuisvesting Nederland) explained that environmental performance scores will automatically be higher under this revised assessment method, known as the Bepalingsmethode, which takes effect on 1 July 2026 [2]. According to Stichting NMD, the organization managing the National Environmental Database, in a news release published on 20 May 2026, the revised calculation framework is designated as the Assessment Method for Environmental Performance of Buildings (BPM 2.0), and calculations using “dataset A2” will become mandatory on 1 July 2026 [1].

Because the underlying calculation automatically inflates the Milieu Kosten Indicator (MKI) scores, existing product ratings will rise without any physical change to the materials themselves [2, 3]. This means a product that previously met the threshold might suddenly fail to qualify, not because its environmental footprint worsened, but because the mathematical model now captures a wider array of impact categories [2, 3]. The Netherlands Enterprise Agency (RVO) acknowledged this inflation in an official update published on 17 July 2026 [3]. To prevent bio-based insulation materials from being locked out of government support, the RVO adjusted the MKI threshold for the ISDE subsidy scheme in 2026 [3]. The maximum allowable MKI score for qualifying bio-based insulation was raised from 0.85 to 1.90 at a thermal resistance (Rd-value) of 3.5, according to the RVO’s update published on 17 July 2026 for the 2026 calendar year [3]. This adjustment ensures that bio-based products remain financially viable for installers and homeowners under the new calculation rules [3].

The regulatory tightening taking effect on 1 July 2026 targets both residential and commercial sectors in the Netherlands, creating new compliance hurdles for contractors [2, 5]. For office buildings, the maximum allowed MPG score will be tightened by 15%, as announced by the Ministry of Housing on 13 May 2026 [2]. This establishes a strict limit of 1.55 euro per square meter of gross floor area per year, starting 1 July 2026 [5].

How will your sales team respond when a long-term commercial client asks for certified low-impact materials that you do not have in stock?

The regulation includes specific exemptions to prevent immediate market disruption. More lenient environmental performance requirements will apply to small homes and certain offices that have a high ratio of external wall area relative to their floor area, starting 1 July 2026 [2]. Furthermore, the rules do not apply to industrial or other utility functions if the usable area of the building is under 50 square meters, according to rules taking effect on 1 July 2026 [5]. This means that while the market is shifting, older or smaller designs are not immediately rendered illegal or unsellable.

The most significant commercial shift lies in the utility sector. For the first time, starting 1 July 2026, formal MPG requirements will apply to utility buildings [2, 5]. This category includes schools, retail premises, healthcare facilities, and industrial halls [2, 5]. The Dutch government has set the maximum MPG for these utility functions at 1.85 euro per square meter of gross floor area per year, starting 1 July 2026 [5].

For merchants, this means commercial contractors will now demand detailed environmental data for every product destined for a school, shop, or warehouse. Procurement directors must ensure that their suppliers can deliver verified Environmental Product Declarations (EPDs) that comply with the 19-category dataset [1, 5]. Without this data, contractors cannot complete the mandatory MPG calculations required to secure building permits [1, 5].

While the tightening of the MPG limits presents a compliance challenge, the Dutch ISDE subsidy scheme for 2026 offers a powerful commercial lever to drive sales of premium, low-impact materials [6, 7]. Under the 2026 rules published by the RVO on 26 June 2026, roof insulation qualifies for a bio-based bonus of €5.00 per square meter [7]. To qualify for this bonus, the newly applied insulation material must meet a minimum thermal resistance (Rd-value) of 3.5, as specified in the RVO’s 2026 guidelines [7]. The subsidy is capped at a maximum surface area of 200 square meters per property for the 2026 calendar year [7].

The financial appeal of these measures increases when homeowners combine multiple renovations. In its program guidelines updated on 17 July 2026, the RVO detailed that if a homeowner installs more than one insulation measure, or combines insulation with a heat pump, solar water heater, or a heat network connection within a 24-month window, the insulation subsidy amount doubles [6]. This doubling mechanism turns standard insulation jobs into highly lucrative projects for installers. For example, under the 2026 scheme, the installation of a solar water heater can receive up to €3,417 in subsidy, while soil insulation qualifies for a maximum of €520 [6]. Additionally, starting in 2026, homeowners can apply for a subsidy for ventilation if the ventilation measure is combined with one or more insulation measures [6].

These combined incentives change the purchasing dynamics at the trade counter. Contractors are no longer just looking for the cheapest glass wool or PIR board. They are calculating the total project cost, factoring in the €5.00 per square meter bio-based bonus and the potential doubling of the subsidy [6, 7]. Merchants who stock high-performance bio-based insulation with the correct Rd-values can help their trade customers secure these lucrative subsidies, turning a regulatory hurdle into a sales opportunity.

To navigate this transition, procurement directors at merchants must take immediate, practical steps to align their inventory with the new Dutch requirements.

First, review the environmental documentation of all stocked insulation products. Ensure that suppliers have updated their EPDs to align with the EN 15804+A2 standard and the 19-category calculation method [1, 5]. Products carrying outdated 11-category data will become increasingly difficult to specify in commercial projects as contractors face the new 1.55 and 1.85 euro limits [2, 5].

Second, adjust stock levels to anticipate a rise in demand for bio-based alternatives. The combination of the adjusted MKI threshold of 1.90 and the €5.00 per square meter ISDE bonus makes materials like cellulose and wood fiber highly competitive [3, 7]. Ensure your sales teams are trained to explain these subsidy rules to contractors, emphasizing how combining insulation with ventilation or heating systems can double the financial return [6].

Finally, secure supply lines for certified bio-based products. As the Dutch market transitions, demand for these materials is expected to rise, potentially leading to supply bottlenecks. Establishing strong relationships with manufacturers who already possess compliant, verified EPDs will be a key competitive advantage.

[1] milieudatabase.nl — https://milieudatabase.nl/en/latest/news/from-1-july-2026-revised-assessment-method-and-updated-mpg-requirements-take-ef/ [2] volkshuisvestingnederland.nl — https://www.volkshuisvestingnederland.nl/actueel/nieuws/2026/05/13/nieuwe-en-aangepaste-milieuprestatie-eisen-voor-gebouwen-per-1-juli-2026 [3] rvo.nl — https://www.rvo.nl/subsidies-financiering/isde/isde-wat-wijzigt-er-2026 [4] steico.com — https://www.steico.com/fileadmin/user_upload/Public_Docs/DNK_da/DNK_da_certificates/STEICO_environmental-product-declaration_floc-s_DNK_en_i.pdf [5] iplo.nl — https://iplo.nl/regelgeving/regels-voor-activiteiten/technische-bouwactiviteit/nieuwbouw/rijksregels/milieuprestatie-regels-vanaf-1-juli-2026/ [6] rvo.nl — https://www.rvo.nl/subsidies-financiering/isde/woningeigenaren [7] rvo.nl — https://www.rvo.nl/subsidies-financiering/isde/woningeigenaren/isolatiemaatregelen