Internorm HF 410
Internorm’s flagship timber-aluminium window: an 85 mm timber structural frame (spruce, larch, oak or walnut inner face) behind an external aluminium shell in a wide RAL range. Uw as low as 0.64 W/m²K; sound reduction to 45 dB; concealed locking. Made in Austria, sold UK-wide through Internorm’s partner network.
Carbon and evidence
Product Evidence
Evidence currently held for the Internorm product record.
Recorded Carbon Result
A1–A3 GWP-total per m² of the Austrian platform-average wood-aluminium window (1.23 × 1.48 m, triple glazed, 69 kg), per the Bau-EPD platform declaration in which the HF 410 is a named contributor — an industry average, NOT an Internorm-specific figure. 168 per whole window.
Indicator: GWP-total
A1–A3 covers raw-material supply, transport to manufacture and manufacturing. It is product-stage information, not a whole-life result.
Environmental Product Declaration
EPD recorded- Coverage
- Coverage not confirmed
- Declared unit
- Not recorded
- Programme
- Bau EPD GmbH (Austria)
- Registration
- BAU-EPD-PLATTFORM-FENSTER-FVHOLZ-2023-1-Ecoinvent
- Standard
- EN 15804+A2 (ecoinvent 3.8)
- Valid until
- 2028-02-14
- Verification
- Third-party verified
Austrian platform EPD — a weighted average of six manufacturers (~65% of Austrian industrial wood-alu production), in which "Internorm HF410, glazing 4-18-4-18-4, Ar, plant Lannach" is a named contributing product. Not an Internorm-specific declaration; German-language document.
Reported GWP Modules
Displayed as stored; modules are not added together here.
A1–A3
92.3 kgCO₂e
per 1 m² of the 1.23 × 1.48 m reference wood-alu window
2 certifications are held in the staging record but not presented as product evidence because an exact public source has not yet been mapped.
Comparison Status
This result should be displayed for information only and not ranked against another product.
- • The declared or functional unit is missing.
- • The PCR and version are missing.
- • The represented product coverage is unknown.
- • The carbon result is not linked to an evidence source.
- • The EPD is not linked to an evidence source.
Evidence Gaps
- •EPD product coverage is not confirmed.
- •No A4–D lifecycle results are held beyond the product stage.
- •No product-specific circularity or material-health claims are recorded.
- •2 certifications are withheld because exact public evidence is not mapped.
Design & Specification Notes
Qualitative notes for early design discussion. Not product-specific EPD evidence, and not a basis for numerical comparison.
Internorm’s flagship timber-aluminium window: an 85 mm timber structural frame (spruce, larch, oak or walnut inner face) behind an external aluminium shell in a wide RAL range.
Typical Uses
- •Glazing systems
- •Daylight openings
- •Thermal envelope
Key Performance
Supports daylight and thermal performance of the envelope.
Typical Service-Life Estimate
30 yearsGeneric estimate for early design discussion; confirm with the manufacturer.
Specification Actions
- •Verify glazing U-values meet or exceed building regs.
- •Consider specifying higher recycled glass content.
- •Confirm the current EPD covers the selected product, finish and manufacturing route.
Indicative Health & Indoor Air
Specification
- Finish
- Timber-aluminium composite window
- Thermal
- Uw as low as 0.64 W/m²K