Asbestos in pre-2000 homes
A black cold-water cistern in the loft looks like an old moulded tank and it was not sampled. Why is a likeness not an identification of asbestos?
A likeness is not an identification because the cistern was not sampled. The survey can say a black cold-water cistern in the loft looks like an old moulded tank. Looking is not a laboratory result, and a home survey does not identify asbestos by appearance. Buildings built or refurbished before 2000 can contain asbestos. The report has not called the cistern asbestos, and it has not called it free of asbestos. The look of the tank is not its name.
Last reviewed 24 October 2026. Written for buyers in England and Wales unless this answer says otherwise. No named surveyor has signed this page. It is general guidance, not a report on your house, and not legal advice.
What is the fuller explanation?
Moulded cold-water cisterns of that era were made in more than one material, and a black skin can be paint, plastic or a cement sheet product. The eye does not sort those. Sampling is a separate job, done by someone set up to take a sample without spreading dust, and the home survey did not do it. Nothing in the note invites you to sand, drill or break the tank to find out. The identification, if you need one, comes from a sample, not from a better adjective.
Tell the solicitor the cistern was seen and not identified. If a buyer, a lender or a contractor needs to know the material before work in the loft, instruct a competent sampler. Do not describe the tank as safe or unsafe. The survey has not said either. Keep the loft note as a likeness, and keep any later sample result as the document that names the material.
What should you ask your surveyor?
- Did you record a likeness to an old moulded tank without sampling it?
- Have you avoided calling the cistern asbestos or free of asbestos?
- Was identification left to a sample the home survey did not take?
What are the typical next steps?
- Treat the loft note as a likeness, not an identification.
- Do not sand, drill or break the cistern to see what it is.
- Instruct a sampler if the material must be named before works.
Costs vary with the building and with who you instruct. Where this page does not cite a published figure, ask the surveyor, a relevant specialist, or your solicitor for a written quote. Do not treat a forum average as the price.
Also asked about this
If the tank is plastic to the touch, has asbestos been ruled out?
Not by the survey. A feel through dust in a loft is not a sample, and the inspection did not identify the material. Plastic-like surfaces can mislead. The report has not cleared the cistern. If the material matters, it still needs a proper sample rather than a touch.
Does an old house make every black tank asbestos?
No. Buildings built or refurbished before 2000 can contain asbestos, which is a reason not to guess, not a reason to name this cistern. The survey saw a likeness and did not sample it. Age of the house is background. It is not an identification of the tank.