Outbuildings — garages, sheds and barns especially — are the most likely place in a property to accumulate materials that a general clearance cannot handle. This guide is a practical spotting checklist, so specialist items are identified before the day rather than discovered partway through the work.
Commonly found in outbuildings
- Old paint, fuel, oil and weedkiller
- Gas cylinders, including small camping bottles
- Asbestos-cement roofing or panels, particularly on older structures
- Agricultural chemicals, on farm sites specifically
Liquids and chemicals
Old tins of paint, engine oil, weedkiller, brake fluid and similar liquids collect in outbuildings more than almost anywhere else in a property. Look for:
- Tins and containers, even partially used or apparently empty
- Anything without a clear label
- Containers that have clearly been there for years, sometimes rusted or degraded
Gas and pressurised items
Camping gas bottles, small LPG cylinders, aerosols and fire extinguishers are commonly stored and forgotten in garages and sheds. These should never be included in general waste or compacted in a vehicle.
Building materials
Older garages, sheds and barns, particularly those built before the 1990s, often used asbestos-cement sheeting for roofing. Look out for:
- Corrugated grey sheet roofing on older structures
- Flat panel walls or ceiling linings of a similar age
- Any material that looks like cement sheeting rather than modern roofing
If you’re not sure, the safest approach is always to treat it as a possibility and get it checked, rather than assume it’s safe.
A simple spotting checklist
Walking through an outbuilding before clearance:
What to do once something’s identified
You don’t need to move or handle anything you’ve flagged — the point of identifying it in advance is so the clearance team knows to plan around it, arrange the right specialist, or advise you on the correct disposal route, rather than encountering it unexpectedly during the work.
Frequently asked questions
Should I move hazardous items somewhere before the clearance?
No — it's safer to leave them where they are and simply point them out, rather than risk moving something you're unsure about.
What if I find something I don't recognise at all?
Flag it rather than guessing. It's much safer to have an unidentified item checked than to assume it's harmless.
Does finding a hazardous item delay the whole clearance?
Usually not significantly — the rest of the clearance can normally proceed as planned, with the specific item or area left for the right specialist.
Are these rules different for a farm building than a garden shed?
The general principle — flag anything unclear, don't disturb suspected asbestos, keep chemicals separate — applies to both, though farm sites can have additional agricultural chemicals and specific waste exemptions to be aware of.
Key takeaways
- Outbuildings are the most likely place to find hazardous materials in a property.
- Look for unlabelled liquids, gas cylinders and older cement-sheet roofing.
- Never move or handle something you're unsure about — just flag it.
- Identifying items in advance keeps the rest of the clearance running smoothly.
See garage clearance or barn and farm outbuilding clearance, or request a quote and flag anything you’re unsure about.