SSurplusBuilder.
B-grade surplus insulation & plasterboard — Surplus Kingspan K7 80mm phenolic (40 boards · 2.4×1.2m) — LiverpoolB-grade

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

Liverpool·40 boards · 2.4×1.2m·Listed 20d ago
£1,435/lot

Sold by Liverpool Urban Reclamation (Demolition) · Ref L0413

Contact sellerHow buying works

Condition grade 7/10 (B-grade). 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 Liverpool — collection or arranged regional delivery available. Fresh to market — posted 20 days ago by Liverpool demolition Liverpool Urban Reclamation.

Surplus stock like this exists because projects over-order to avoid downtime — the saving gets passed to you instead of the skip. B-grade pricing reflects cosmetics, not performance — the defect notes below set out exactly what was downgraded and why.

Measurements & specifications

Brand
Kingspan Kooltherm K7
λ-value
0.018 W/mK
Location
Liverpool
Ref
SB-41-07
Quantity / lot size
40 boards · 2.4×1.2m
Thermal conductivity
λ 0.034 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 98% of boards

Condition report & known defects

7/10
  • Facing scuffs and 4 dented edges per pack; thermal performance unaffected.
  • Each unit inspected and photographed on request before dispatch.

Carbon & sustainability notes

No reuse CO₂ credit is claimed on this lot: it is unused stock, so the embodied carbon was committed at manufacture. Buying it still prevents waste — material sent to landfill or energy recovery delivers none of its embodied value.

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 Liverpool premises — kerbside hand-load or forklift by arrangement.
  • Seller can quote hiab or flatbed delivery within ~60 miles of Liverpool; from £75.
  • 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 9 packs.

More surplus insulation & plasterboard

View all →