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B-grade surplus insulation & plasterboard — Moisture-resistant MR plasterboard 15mm (50 sheets) — CardiffB-grade

Moisture-resistant MR plasterboard 15mm (50 sheets) — Cardiff

Cardiff·50 sheets·Listed 4d ago
£505/lot

Sold by Cardiff Urban Reclamation (Demolition) · Ref L0465

Contact sellerHow buying works

Condition grade 7/10 (B-grade). Assessed by the seller at listing; figures below relate to this specific lot of 50 sheets.

About this lot

For bathrooms and kitchens. Green-faced, sealed, dry stored. Located in Cardiff — collection or arranged regional delivery available. Listed 4 days ago by Cardiff Urban Reclamation, a demolition based in Cardiff.

Every lot here was once destined for waste transfer — listing it instead keeps first-quality material in circulation at well below merchant list. B-grade pricing reflects cosmetics, not performance — the defect notes below set out exactly what was downgraded and why.

Measurements & specifications

Spec
MR 15mm
Size
2.4 × 1.2m
Location
Cardiff
Ref
SB-45-11
Quantity / lot size
50 sheets
Thermal conductivity
λ 0.030 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 95% of boards

Condition report & known defects

7/10
  • Each unit inspected and photographed on request before dispatch.
  • Facing scuffs and 2 dented edges per pack; thermal performance unaffected.

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.

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 Cardiff premises — forklift loading available weekdays 7:30am–4pm.
  • Regional pallet delivery can be arranged from £35 depending on postcode and lead time.
  • Inspection before purchase is encouraged — bring a tape and check sample units against the measurements above.

Typical applications

  • Floor insulation under screed or chipboard
  • Dot-and-dab and stud-wall drylining
  • Garage conversions and garden offices
  • Acoustic upgrades between floors

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 7 packs.

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