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New surplus surplus insulation & plasterboard — Sheep's wool 100mm natural insulation (24 m²) — SheffieldNew surplus

Sheep's wool 100mm natural insulation (24 m²) — Sheffield

Sheffield·24 m²·Listed 14d ago
£410/lot
~33kg CO₂e saved

Sold by Sheffield Greenfield Contractors (Contractor) · Ref L0451

Contact sellerHow buying works

Condition grade 9/10 (New surplus). Assessed by the seller at listing; figures below relate to this specific lot of 24 m².

About this lot

Sealed bales of British sheep's wool. Breathable, low embodied carbon, no itch. Located in Sheffield — collection or arranged regional delivery available. Offered by Sheffield Greenfield Contractors (contractor) from their Sheffield yard, listed 14 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.

Measurements & specifications

Brand
Black Mountain Natuwool
λ-value
0.039 W/mK
Location
Sheffield
Ref
SB-44-09
Quantity / lot size
24 m²
Thermal conductivity
λ 0.030 W/mK (per facing print)
Board squareness
Checked diagonal-to-diagonal on 3 sample boards
Edge profile
Tongue & groove
Storage
Flat-stacked, dry, off the ground since arrival
Facing condition
Foil/paper facings intact on 94% of boards

Condition report & known defects

9/10
  • Stored under cover since delivery; no weather exposure.
  • Unused stock — original banding/packaging intact where stated.
  • Original wrap opened on one pack for count verification, re-taped.

Carbon & sustainability notes

The 33 kg CO₂e figure on this listing is calculated against producing virgin PIR/mineral wool boards (PIR ~3.5 kg CO₂e per m² at 100mm).

Put another way — about 195 km of driving emissions, or 2 tree-years of carbon uptake.

If your project tracks embodied carbon (BREEAM, Part Z readiness, or client ESG reporting), keep this listing reference as evidence of avoided emissions.

Collection & delivery

  • Buyer collection in Sheffield; pallet truck on site; tail-lift vehicles recommended.
  • Seller can quote hiab or flatbed delivery within ~30 miles of Sheffield; from £75.
  • Ask the seller for close-up photos or a video walkround if you can't visit — they expect the request.

Typical applications

  • Warm roof build-ups and rafter-level insulation
  • Floor insulation under screed or chipboard
  • Dot-and-dab and stud-wall drylining
  • Garage conversions and garden offices

How to buy, collect and install this lot

  1. 1Confirm your requirement against the measurements above — bring a tape and the 24 m² figure when you visit Sheffield Greenfield Contractors in Sheffield.
  2. 2Reserve the lot in writing with a deposit; get the batch/reference (L0451) and condition grade (9/10) on the receipt.
  3. 3Arrange transport: telehandler on site, HGV access fine. Confirm access at your delivery address (width, overhead clearance, forklift or hand-ball).
  4. 4On arrival, check the count against the 24 m² stated and photograph any transit damage before signing the delivery note.
  5. 5Store correctly on site — for insulation, that means dry, level and off the ground; keep original packaging on until the day of use where possible.
  6. 6Dry-lay or trial-fit a small sample first to confirm insulation performs as expected in your specific application before committing the whole lot.
  7. 7Log the reuse for your project records: photograph the seller invoice, capture the ~33 kg CO₂e figure and save this listing URL in your embodied-carbon file.

Pre-purchase checklist

  • Measure twice — confirm 24 m² covers your net requirement plus a 9% waste/cutting allowance.
  • View in person or request a video walkround from Sheffield Greenfield Contractors; do not rely on the hero photograph alone.
  • Check condition against the 9/10 grade above — ask which specific defects apply to the units you'll actually receive.
  • Confirm the batch or shade reference (L0451) so what you inspect is what you collect.
  • Agree collection or delivery cost in writing — pallet, hiab, flatbed or hand-ball each price very differently.
  • Verify VAT position: is the £410/lot figure ex-VAT or inclusive? Trade sellers default to ex-VAT.
  • Ask about returns or replacements if the delivered quantity falls short — reputable contractors stand behind the stated count.
  • Screenshot this listing (title, price, condition, CO₂ figure) as your negotiation baseline — surplus prices drift as lots age.
  • Check compatibility if you're matching existing material (brick blend, tile shade, timber section) with a physical sample first.
  • Book collection or delivery within your reservation window — new surplus lots at this price rarely sit for long.

Price in context

  • At £410/lot, this lot sits roughly 34% below current UK merchant list for equivalent new material — the typical spread for new surplus insulation.
  • Delivered-to-door pricing (including pallet freight within ~40 miles of Sheffield) tends to add £75–£110 to the headline figure; collection stays as advertised.
  • Comparable new surplus lots in the surplus insulation & plasterboard category have moved on SurplusBuilder within 4 days of listing — well-priced surplus doesn't linger.

Sustainability deep-dive

The headline saving on this listing (~33 kg CO₂e) is benchmarked against producing virgin PIR/mineral wool boards (PIR ~3.5 kg CO₂e per m² at 100mm). 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 insulation 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 insulation 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.

Questions about this lot

Do part-sheets affect building control sign-off?+

No — what matters is the declared lambda value and installed thickness. Keep a facing photo showing the print line for your Building Regs file.

How should boards be stored on site?+

Flat, dry and off the ground. PIR facings degrade with prolonged UV exposure, so keep the wrap on until the day of fixing.

Is mixed-brand insulation OK in one roof?+

Yes, provided each zone's U-value calc uses the correct lambda for the board actually installed there. This lot is single-brand across all 6 packs.

What payment and paperwork should I expect from Sheffield Greenfield Contractors?+

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 insulation description and quantity are on record.

Can I reserve this lot while I organise transport from Sheffield?+

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.

Is this suitable for a Part L / Part Z reporting project?+

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.

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