Compliance: BENG, Wkb, certification and financing

Yes. The Premium wall (Rc > 4.7) sits comfortably above the Dutch requirement. We supply U, Rc and airtightness data for your adviser's NTA 8800 calculation.

We supply the parameters (U, Rc, airtightness, material details) with which your building physicist performs the NTA 8800 calculation. A ready-made NTA dataset is in development.

Bio-based materials perform considerably better than mineral alternatives. The Premium wall saves indicatively approx. 42 kg CO₂-eq per m² (internal calculations; to be validated per project). Formal EPDs on request or via partner suppliers.

CE-marked under ETA-21/0014, legally valid throughout the EU. Certificate on request.

No, not directly. For projects where the client or assurer explicitly requires KOMO, a Dutch structural engineer completes the local sign-off. We supply all underlying product data.

No ISO 9001 certificate; quality management is organised in line with ISO 9001 principles.

Available on request, with certification per project.

All structural calculations in accordance with Eurocode 5; for Dutch projects complemented by a Dutch structural engineer.

Mandatory since 1 January 2024 for consequence class 1: an independent quality assurer supervises the execution. CE/ETA + a Dutch structural engineer + as-built docs satisfy this in principle.

• CE marking and ETA-21/0014 certificate
• Production photos per project
• Assembly reports and blower-door results
• As-built drawings and certification
• Warranty certificate and handover certificate

We supply the dossier your quality assurer needs (see C2) and align it with your preferred assurer in advance.

Up to 13 m: WBDBO 30–60 minutes achievable without special measures. 13–30 m: encapsulation or sprinklers. >30 m: sprinklers almost always required. The functional fire-safety requirements of the Bbl are equivalent for timber and traditional building systems.

Yes, with the right build-up: DnT,A,k ≥ 52 dB and Lnt,A,k ≤ 54 dB achievable. Specs in Module 2 (Technical).

Vapour-open build-up with pro clima SOLITEX and a Ubakus calculation to "no condensate". Details in Module 2.

Dutch banks finance timber construction; conditions differ per bank and a completion guarantee or warranty scheme is often required. We supply the CE/ETA documentation and structural calculations needed for this.

NHG sets requirements for the home and the financing, not for the building system; the assessment runs via your mortgage adviser within the applicable NHG limit (nhg.nl).

Certified valuers (NVM, VBO) value timber construction on the same basis as traditional construction; we supply the building documentation and certification for the valuation report.

Insurance is agreed per project and laid down in the contract; CAR insurance for the Dutch project usually runs via the client or main contractor.

Dutch property insurers cover timber construction; premiums and conditions differ per policy. We supply the documentation (CE/ETA, fire class, production specifications).

Fire during construction, leakage during assembly, permanent water immersion. Termites are not an issue in NL.

Standard 3-year warranty on the home and all work carried out, extendable to 5 years; terms and surcharge are laid down in the contract. A Dutch warranty or guarantee scheme (for example via Woningborg or SWK) is arranged with your contractor or bank; we supply the documentation.

ZTC is not itself a participant in a Dutch warranty insurance scheme. Acceptance by a warranty insurer runs via the Dutch contractor or client and is confirmed per project.

Theo Rolvink is the first point of contact in the Netherlands. For structural defects the technical team assesses the report and an on-site solution is agreed case by case.