VELUX Roof Window (GIL)

Pine-framed pitched-roof window with triple glazing (configuration 62), for daylight and ventilation in roof spaces. Lacquered or white-painted timber inside, aluminium weather cladding outside; the representative EPD covers the VELUX wooden roof-window range.

Manufacturer page
VELUX VELUX Roof Window (GIL)

Carbon and evidence

Product Evidence

Evidence currently held for the VELUX product record.

VELUX

Recorded Carbon Result

133.9kgCO₂e/m²

A1–A3 GWP-total per declared unit, per EPD

Indicator: GWP-total

VELUX Roof Window (GIL) Environmental Product Declaration · PDF p. 6, LCA results table

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 wooden roof window (based on 1.34 × 1.40 m)
Programme
Institut Bauen und Umwelt e.V. (IBU)
Registration
EPD-VEL-20250262-CBI1-EN
Standard
EN 15804+A2
Valid until
2030-05-27
Verification
Third-party verified

Declaration is for VELUX GIL wooden roof windows with 62 triple-glazing configuration.

Read the EPDSource: PDF p. 6, LCA results table

Carbon profile

kgCO2e per 1 m² wooden roof window (based on 1.34 × 1.40 m) · each bar starts at zero · local scale

A1-A3 product

134

A4-A5 site*

not declared

—

B use

not declared

—

C end of life

20.6

D reuse / recycling

-36

adds carbon stores or removes EPD scenario* reuse/recycling potential (D)
* EPD transport and installation scenario, not this project's. Not declared: site, use. Module D shows potential impacts or benefits from reuse, recovery or recycling after the product's assessed life. It is reported separately and never added to A-C. Do not compare bar lengths between materials. Each chart may use a different scale and declared unit.

Reported GWP Modules

Displayed as stored; modules are not added together here.

A1–A3

134 kgCO₂e

per 1 m² wooden roof window (based on 1.34 × 1.40 m)

C1

0.00134 kgCO₂e

per 1 m² wooden roof window (based on 1.34 × 1.40 m)

C2

1.66 kgCO₂e

per 1 m² wooden roof window (based on 1.34 × 1.40 m)

C3

17.2 kgCO₂e

per 1 m² wooden roof window (based on 1.34 × 1.40 m)

C4

1.77 kgCO₂e

per 1 m² wooden roof window (based on 1.34 × 1.40 m)

D

-36 kgCO₂e

per 1 m² wooden roof window (based on 1.34 × 1.40 m)

* A4/A5 are EPD scenarios, not project-specific results. Module D is outside the A–C system boundary and is not added to A–C. Module nomenclature follows BS EN 15978 / EN 15804. Declared values are suitable as inputs to a whole life carbon assessment under the RICS Professional Standard (2nd edition); this panel is not an assessment.

Service Life — the B4 Replacement Input

40 years · basis not recorded

≈2 installations over a 60-year building study period.

B4 (replacement) follows the building, not the product: an assessor multiplies replacement cycles by project quantities. This record supplies the service life and does not compute B4.

Sourced Product Claims

  • Timber frame stores biogenic carbonManufacturer declaredSource
  • Representative IBU EPD for wooden roof windowsThird-party verifiedSource
  • Triple-glazed optionManufacturer declaredSource

Evidence Sources

Manufacturer declared
VELUX Roof Window (GIL) Environmental Product Declaration

Institut Bauen und Umwelt e.V. (IBU) · PDF p. 6, LCA results table

Coverage: Declaration is for VELUX GIL wooden roof windows with 62 triple-glazing configuration.

Third-party verified

Comparison Status

The record contains the basic metadata required for a controlled comparison. Products must still perform the same function and use compatible units, PCRs and lifecycle scope.

Design & Specification Notes

Qualitative notes for early design discussion. Not product-specific EPD evidence, and not a basis for numerical comparison.

Pine-framed pitched-roof window with triple glazing (configuration 62), for daylight and ventilation in roof spaces.

Typical Uses

  • •Glazing systems
  • •Daylight openings
  • •Roof penetrations

Key Performance

Supports daylight through the roof plane; check weathertightness and thermal bridging at the upstand.

Specification Actions

  • •Confirm FSC or PEFC certification for all timber products.
  • •Request chain-of-custody documentation from supplier.
  • •Confirm the current EPD covers the selected product, finish and manufacturing route.

Indicative Health & Indoor Air

low Risk

Lacquered/painted timber with aluminium cladding; durable, low-maintenance.

Evidence:Third-party verified

Specification

Range
GIL
Collection
VELUX Roof Windows
Finish
Timber-framed roof window, triple glazed
Thermal
Triple-glazed configuration 62; low Uw roof-window options
Service life
40 years

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