Asbestos in pre-2000 homes
What should you ask if a boiler cupboard or flue looks like asbestos cement?
Ask the surveyor what they could see and whether they are guessing at cement, board or metal. Ask a Gas Safe engineer about any working boiler, and ask an asbestos specialist before the cupboard is stripped. The home survey has not tested either the gas or the material.
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?
Old warm-air heaters and boilers sometimes sit in cupboards lined with asbestos board, which HSE treats more cautiously than cement sheets. A flue pipe can be cement. The difference matters because the removal controls differ. A surveyor at a cupboard door cannot always tell. They should say so.
Do not swap the boiler in the same breath as the purchase without that identification. A Gas Safe engineer must do the gas work. If they find a suspect lining, they should stop rather than break it out. Budget the two appointments separately. Neither fee is a national tariff.
What should you ask your surveyor?
- What did the cupboard lining look like, and did you touch it?
- Is the appliance in use, and did you exclude a gas test?
- Are you more worried about cement flue pipe or insulating board?
What are the typical next steps?
- Do not pull the cupboard apart on a viewing.
- Book gas and asbestos advice as separate jobs if you will replace the appliance.
- Tell each specialist what the other has been asked to do so they do not undo each other’s caution.
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
Can a surveyor tap the panel to see if it is cement?
They should not damage it to satisfy curiosity. If they are unsure, the next step is a competent inspection, not a harder tap.
Is a metal flue a problem?
Metal is not asbestos. The surveyor should say if they could see metal. Corrosion of a flue is then a gas and a building question, still not a home-survey test.