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Reclaimed surplus insulation & plasterboard — Celotex GA4000 100mm offcuts (~18 m²) — NewcastleReclaimed

Celotex GA4000 100mm offcuts (~18 m²) — Newcastle

Newcastle·~18 m²·Listed 5d ago
£100/lot
~68kg CO₂e saved

Sold by Newcastle Reclaim Co. (Demolition) · Ref L0402

Contact sellerHow buying works

Condition grade 8/10 (Reclaimed). Assessed by the seller at listing; figures below relate to this specific lot of ~18 m².

About this lot

Mixed PIR pieces, all usable. Perfect for stud walls and ceiling bays. Thermally identical to full boards. Located in Newcastle — collection or arranged regional delivery available. Listed 5 days ago by Newcastle Reclaim Co., a demolition based in Newcastle.

Every lot here was once destined for waste transfer — listing it instead keeps first-quality material in circulation at well below merchant list. As reclaimed stock it carries genuine history — the full condition report below states exactly what to expect.

Measurements & specifications

Brand
Celotex GA4000
λ-value
0.022 W/mK
Location
Newcastle
Ref
SB-40-08
Quantity / lot size
~18 m²
Thermal conductivity
λ 0.028 W/mK (per facing print)
Board squareness
Checked diagonal-to-diagonal on 8 sample boards
Edge profile
Square edge
Storage
Flat-stacked, dry, off the ground since arrival
Facing condition
Foil/paper facings intact on 100% of boards

Condition report & known defects

8/10
  • Minor handling marks from salvage and palletising; nothing affecting use.
  • Sold as carefully de-nailed strip-out stock — verify facings before airtightness-critical use.

Carbon & sustainability notes

Reusing this material saves roughly 68 kg CO₂e versus producing virgin PIR/mineral wool boards (PIR ~3.5 kg CO₂e per m² at 100mm).

That's equivalent to about 401 km of average petrol-car driving, or what 3 mature trees absorb in a year.

Reuse is the single fastest way to cut a build's embodied carbon — substitution beats offsetting every time.

Collection & delivery

  • Collection from the seller's Newcastle premises — pallet truck on site; tail-lift vehicles recommended.
  • Regional pallet delivery can be arranged from £55 depending on postcode and lead time.
  • Inspection before purchase is encouraged — bring a tape and check sample units against the measurements above.

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

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 3 packs.

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