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New surplus surplus insulation & plasterboard — Surplus Kingspan K7 80mm phenolic (40 boards · 2.4×1.2m) — SheffieldNew surplus

Surplus Kingspan K7 80mm phenolic (40 boards · 2.4×1.2m) — Sheffield

Sheffield·40 boards · 2.4×1.2m·Listed 22d ago
£1,460/lot
~77kg CO₂e saved

Sold by Sheffield Greenfield Contractors (Contractor) · Ref L0415

Contact sellerHow buying works

Condition grade 10/10 (New surplus). Assessed by the seller at listing; figures below relate to this specific lot of 40 boards · 2.4×1.2m.

About this lot

Surplus to a Passivhaus retrofit. Better λ than PIR. Sealed packs, dry stored. Located in Sheffield — collection or arranged regional delivery available. Fresh to market — posted 22 days ago by Sheffield contractor Sheffield Greenfield Contractors.

Surplus stock like this exists because projects over-order to avoid downtime — the saving gets passed to you instead of the skip. As new surplus it is indistinguishable from merchant stock except for the price.

Measurements & specifications

Brand
Kingspan Kooltherm K7
λ-value
0.018 W/mK
Location
Sheffield
Ref
SB-41-09
Quantity / lot size
40 boards · 2.4×1.2m
Thermal conductivity
λ 0.030 W/mK (per facing print)
Board squareness
Checked diagonal-to-diagonal on 6 sample boards
Edge profile
Tongue & groove
Storage
Flat-stacked, dry, off the ground since arrival
Facing condition
Foil/paper facings intact on 96% of boards

Condition report & known defects

10/10
  • Corner crush on ~6% of boards from transit — cut-around loss only.
  • Minor pallet-edge scuffs to outer packaging only.
  • Stored under cover since delivery; no weather exposure.
  • Unused stock — original banding/packaging intact where stated.

Carbon & sustainability notes

The 77 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 454 km of driving emissions, or 4 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

  • Collection from the seller's Sheffield premises — kerbside hand-load or forklift by arrangement.
  • Seller can quote hiab or flatbed delivery within ~60 miles of Sheffield; from £65.
  • Ask the seller for close-up photos or a video walkround if you can't visit — they expect the request.

Typical applications

  • Dot-and-dab and stud-wall drylining
  • Garage conversions and garden offices
  • Acoustic upgrades between floors
  • Warm roof build-ups and rafter-level insulation

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 5 packs.

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