UK · Updated 2026 · Buying guide
Weekend Collection of Surplus Rockwool & Mineral Wool in Cardiff: 2026 DIY Guide
Weekend DIYers and moonlighting trades in Cardiff often can't collect midweek. This 2026 guide covers Wales yards open Saturdays and Sundays plus SurplusBuilder listings that welcome weekend pickup.
Weekend-open yards in Cardiff
Most Wales reclamation yards trade Saturday morning; a smaller number open Sunday. Book collection slots in advance during peak DIY season (March–October).
Weekend logistics tips
- Book van hire on Friday for Saturday am collection
- Bring straps, sheets and a helper
- Pay by card on collection — most yards no longer take cash-only
- Check access: many CF10, CF11 and CF14 yards are unmanned Sundays
Pricing weekend collections
| Grade | Typical price | Notes |
|---|---|---|
| Job-lot / bulk | £12.00 per pack | Merchant clearance, palletised |
| Standard graded | £27 per pack | Sorted, ready-to-fit stock |
| Heritage / premium | £42 per pack | Character grade, hand-picked |
What to check before the drive
- Rockwool RWA45, Knauf Earthwool, Isover — sealed factory packs
- Same A1 non-combustible fire rating as new
- Standard 100mm, 150mm and 200mm depths
Frequently asked questions
+Are Cardiff yards open Sunday?
A minority — always ring ahead. Saturday morning coverage is much broader across Wales.
+Is weekend pricing higher?
Usually not — but weekend van hire is more expensive.
+Can mineral wool get wet?
Recovers if it dries fully within 48 hours. Prolonged saturation permanently reduces R-value.
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