Aerated blocks — surplus Hemelite 7N (400 units)
Surplus to a self-build that finished under-order. New, dry-stored, banded. 7N/mm² medium-density blocks suitable for load-bearing inner leaves.
Sold by Glasgow Greenfield Contractors (Contractor) · Ref L0135
Condition grade 9/10 (New surplus). Assessed by the seller at listing; figures below relate to this specific lot of 3.0 tonnes.
Hand-dressed sandstone blocks from a barn demolition. Random sizes for feature walling and landscaping. Located in Glasgow — collection or arranged regional delivery available. Direct from Glasgow Greenfield Contractors, a contractor operating out of Glasgow; live for 18 days.
This is exactly the kind of material that typically ends up in a skip costing the seller money; buying it diverts it back into a build. This is unused, current-spec material — the only thing second-hand about it is the price tag logic.
Choosing this lot over new product avoids an estimated 217 kg CO₂e — benchmarked against manufacturing a new fired clay brick (~0.5 kg CO₂e per brick, BRE Global data).
For scale: roughly 1280 km in a typical petrol car, or a year's absorption for 10 established trees.
With Part Z and embodied-carbon reporting moving up the agenda, documented reuse like this is increasingly worth recording in your project's carbon log.
The headline saving on this listing (~217 kg CO₂e) is benchmarked against manufacturing a new fired clay brick (~0.5 kg CO₂e per brick, BRE Global data). That's the embodied-carbon figure — the emissions locked into new material at the point of manufacture, before it ever reaches your site.
In UK building terms, embodied carbon typically accounts for 40–60% of a project's whole-life emissions once operational energy is decarbonised. Reusing masonry like this lot from Glasgow bypasses the manufacturing stage entirely, which is why substitution consistently outperforms offsetting on lifecycle assessments.
For projects tracking against Part Z (the proposed embodied-carbon amendment to the Building Regulations), BREEAM Mat 01 credits, or the RIBA 2030 Climate Challenge, reused material counts at zero embodied carbon in the A1–A3 modules. Keep the seller invoice, this listing URL and the CO₂e figure together in your carbon file.
Beyond carbon: buying this lot from Glasgow Greenfield Contractors keeps first-quality masonry out of the UK construction waste stream (currently ~62 million tonnes/year, per DEFRA). It supports the circular-economy supply chain — sellers who divert stock only continue diverting when there's a viable resale route.
Standard UK bricks lay at ~60/m² in a single skin with 10mm joints. This lot (3.0 tonnes) is best confirmed against your wall area plus a 5% cutting allowance.
Bricks that have survived decades outdoors in Glasgow have effectively passed the longest freeze-thaw test there is. We still recommend F2-rated units for exposed copings and below-DPC work.
Yes — the seller (Glasgow Greenfield Contractors) will set aside sample units for inspection at the Glasgow yard before you commit to the full quantity.
Glasgow Greenfield Contractors issues a VAT invoice on collection or dispatch — bank transfer is standard, card on request. For anything over £500 we recommend a written spec confirmation before paying, so the exact masonry description and quantity are on record.
A short reservation (typically 48–72 hours) is usually possible with a 10% holding deposit. Surplus stock moves quickly, especially new surplus lots at this price point — confirm the hold in writing so the seller doesn't re-list.
Yes — the ~217 kg CO₂e saving is calculable against the benchmark in the sustainability notes above; keep this listing URL as evidence for your embodied-carbon log.
Surplus to a self-build that finished under-order. New, dry-stored, banded. 7N/mm² medium-density blocks suitable for load-bearing inner leaves.
Hand-cleaned reclaimed stock with weathered face. Mortar removed. Ideal for facing work, garden walls and conservation infill. Located in Glasgow — collection or arranged regional delivery available.
Surplus from a development. Brand new, banded on pallets. Suits damp courses, retaining walls and below-DPC work. Located in Glasgow — collection or arranged regional delivery available.