Rationel FORMA
Rationel’s traditional all-timber window: ovolo-moulded FSC pine profiles with angled glazing beads for period character. Triple glazed to 0.78 W/m²K; 200+ colours, dual-colour inside/out.
Carbon and evidence
Product Evidence
Evidence currently held for the Rationel product record.
Recorded Carbon Result
A1–A3 GWP-total per m² of FORMA top-guided window (1230 × 1480 mm reference, 36.27 kg/m²), per S-P-07600. Includes −26.3 biogenic uptake; GWP-fossil is 54.8.
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
- Specific product
- Declared unit
- 1 m² window (standard reference window 1230 × 1480 mm, 36.27 kg/m²) — FORMA top-guided
- Programme
- The International EPD System (EPD International AB)
- Registration
- S-P-07600 (:001)
- Standard
- EN 15804+A2 (PCR 2019:14 + c-PCR-007 Windows and doors)
- Valid until
- 2028-09-15
- Verification
- Third-party verified
Product-specific declaration for the top-guided opening type; plant DOVISTA Polska, Wedkowy. GWP-total embeds −26.3 of biogenic uptake (GWP-fossil 54.8).
Reported GWP Modules
Displayed as stored; modules are not added together here.
A1–A3
30.5 kgCO₂e
per 1 m² window (1230 × 1480 mm reference)
Service Life — the B4 Replacement Input
40 years · manufacturer declared
≈2 installations over a 60-year building study period.
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 PCR and version are missing.
- • The carbon result is not linked to an evidence source.
- • The EPD is not linked to an evidence source.
Evidence Gaps
- •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.
Rationel’s traditional all-timber window: ovolo-moulded FSC pine profiles with angled glazing beads for period character.
Typical Uses
- •Glazing systems
- •Daylight openings
- •Thermal envelope
Key Performance
Supports daylight and thermal performance of the envelope.
Specification Actions
- •Confirm FSC or PEFC certification for all timber products.
- •Request chain-of-custody documentation from supplier.
- •Verify glazing U-values meet or exceed building regs.
Indicative Health & Indoor Air
Specification
- Finish
- Solid timber window, traditional ovolo-moulded profile
- Thermal
- Uw 0.78 W/m²K (triple) / 1.27 (double)
- Service life
- 40 years