UK · Updated 2026 · Price comparison
Surplus PIR Insulation Cost Comparison Southampton 2026: Merchant vs Surplus vs Reclaimed
Three ways to buy PIR insulation in Southampton, three very different price tags. This 2026 comparison lays out what you actually pay via merchant, surplus and reclaimed routes across South East.
Southampton price bands 2026
| Route | Typical £ | Best for |
|---|---|---|
| New merchant list | £42 per m² | Full-warranty specified jobs |
| Merchant clearance / surplus | £18.00 per m² | Trade cost-optimisation |
| Reclaimed | £8.00–£28 per m² | Heritage matching, low carbon |
Hidden costs to build in
- Delivery — often 5–15% of material cost
- Wastage — allow 5–10% overage
- Installation labour — sometimes higher for reclaimed
- Storage on site if bought early
Which route wins by project type
- Standard extension: surplus wins in Southampton
- Heritage refurb: reclaimed for matching, planning
- HMO/BTR: surplus and merchant clearance
- Self-build: mix all three by trade package
Collection and delivery inside Southampton
Most Southampton sellers hold stock inside SO14, SO17 and SO18 and offer South Coast next-day £55–£90. For loads over a tonne of PIR insulation, a hiab drop is usually more economical than multiple van runs.
Frequently asked questions
+What's the biggest cost lever in Southampton?
Route choice — merchant to surplus alone typically saves 30–50% on PIR insulation.
+Is surplus PIR the same spec as new?
Yes — surplus is factory-fresh, just over-ordered. Same BBA cert and lambda value.
+Is the cheapest route always right?
No — heritage jobs, warranty-critical spec and public projects each shift the calculus.
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