Bi-fold doors — aluminium 4-pane (3.6m)
Surplus to a luxury extension — 3.6m wide, 4-pane aluminium bi-fold in anthracite. Slim 70mm sightlines, thermally broken. Sealed and stored in workshop.
Sold by Sheffield Greenfield Contractors (Contractor) · Ref L0535
Condition grade 9/10 (New surplus). Assessed by the seller at listing; figures below relate to this specific lot of 3 panels.
Intact leaded panels with original lead in good condition. Suitable for fanlights or feature interior glazing. Located in Sheffield — collection or arranged regional delivery available. Offered by Sheffield Greenfield Contractors (contractor) from their Sheffield yard, listed 6 days ago.
Site over-orders, cancelled jobs and careful strip-outs are where the best material bargains in the UK come from — this lot is one of them. This is unused, current-spec material — the only thing second-hand about it is the price tag logic.
Reusing this material saves roughly 33 kg CO₂e versus manufacturing equivalent new joinery (a new timber door ~35 kg CO₂e; a uPVC window ~60 kg CO₂e).
That's equivalent to about 195 km of average petrol-car driving, or what 2 mature trees absorb in a year.
Reuse is the single fastest way to cut a build's embodied carbon — substitution beats offsetting every time.
The headline saving on this listing (~33 kg CO₂e) is benchmarked against manufacturing equivalent new joinery (a new timber door ~35 kg CO₂e; a uPVC window ~60 kg CO₂e). That's the embodied-carbon figure — the emissions locked into new material at the point of manufacture, before it ever reaches your site.
In UK building terms, embodied carbon typically accounts for 40–60% of a project's whole-life emissions once operational energy is decarbonised. Reusing joinery like this lot from Sheffield bypasses the manufacturing stage entirely, which is why substitution consistently outperforms offsetting on lifecycle assessments.
For projects tracking against Part Z (the proposed embodied-carbon amendment to the Building Regulations), BREEAM Mat 01 credits, or the RIBA 2030 Climate Challenge, reused material counts at zero embodied carbon in the A1–A3 modules. Keep the seller invoice, this listing URL and the CO₂e figure together in your carbon file.
Beyond carbon: buying this lot from Sheffield Greenfield Contractors keeps first-quality joinery out of the UK construction waste stream (currently ~62 million tonnes/year, per DEFRA). It supports the circular-economy supply chain — sellers who divert stock only continue diverting when there's a viable resale route.
Leaf sizes unless the listing says 'with frame'. Always measure your structural opening and allow for packers and tolerance before buying.
Solid timber doors trim comfortably by up to 7mm per edge. Engineered and fire doors have strict trim limits — check the certification label first.
Modern units from Sheffield Greenfield Contractors are toughened where regulations require. Original period glass is not safety glass — re-glaze below 800mm or in door zones.
Sheffield Greenfield Contractors issues a VAT invoice on collection or dispatch — bank transfer is standard, card on request. For anything over £500 we recommend a written spec confirmation before paying, so the exact joinery description and quantity are on record.
A short reservation (typically 48–72 hours) is usually possible with a 10% holding deposit. Surplus stock moves quickly, especially new surplus lots at this price point — confirm the hold in writing so the seller doesn't re-list.
Yes — the ~33 kg CO₂e saving is calculable against the benchmark in the sustainability notes above; keep this listing URL as evidence for your embodied-carbon log.
Surplus to a luxury extension — 3.6m wide, 4-pane aluminium bi-fold in anthracite. Slim 70mm sightlines, thermally broken. Sealed and stored in workshop.
Matching panel doors with original brass furniture intact. Heights 1980–2030mm. Each one a one-off. Located in Sheffield — collection or arranged regional delivery available.
Brand new white casements in mixed sizes 600×900 to 1200×1500. All toughened where required. Located in Sheffield — collection or arranged regional delivery available.