Crittall Corporate W20
Crittall’s Corporate W20 hot-rolled steel window — the section behind the generic term "Crittall-style" — designed for external use with very slim profiles and maximum light transfer. The default for heritage work and loft refurbishment.
Carbon and evidence
Product Evidence
Evidence currently held for the Crittall product record.
Evidence Base
No declaration yetCrittall has not published an EPD or a quantified carbon figure for this product, so nothing on this card is numerical. The guidance below is qualitative — drawn from the product record and curated category knowledge — for early design discussion, not for figures.
No EPD or quantified carbon figure is published for this product, so no figure is recorded (site, downloads library and programme-operator registries checked 8 August 2026). Crittall’s 2020 Sustainability Statement is qualitative.
Next step: request a current product EPD or manufacturer carbon declaration.
What's missing (4)
- •No current product EPD is recorded.
- •No quantified carbon result is recorded.
- •1 sustainability claim is withheld because exact public evidence is not mapped.
- •1 certification is withheld because exact public evidence is not mapped.
1 claim and 1 certification are held in the staging record but not presented as product evidence because an exact public source has not yet been mapped.
Design & Specification Notes
Crittall’s Corporate W20 hot-rolled steel window — the section behind the generic term "Crittall-style" — designed for external use with very slim profiles and maximum light transfer.
Typical Uses
- •Glazing systems
- •Daylight openings
- •Thermal envelope
Key Performance
Supports daylight and thermal performance of the envelope.
Typical Service-Life Estimate
30 yearsSpecification Actions
- •Verify glazing U-values meet or exceed building regs.
- •Consider specifying higher recycled glass content.
- •Request a current product-specific EPD where available.
Indicative Health & Indoor Air
Specification
- Finish
- Hot-rolled steel window, Duralife polyester powder coat