The question is usually asked about the wrong material. Ordinary gypsum plasterboard in a British house does not contain asbestos, and worrying about it distracts from the three things in the same room that might: the textured coating skimmed over it, the board that looks like it and is not, and the pipe, panel or flue behind it. What follows is where the material actually is in a house built or altered before 2000, and why identification is a laboratory question rather than a visual one.
Is there asbestos in plasterboard, and what is actually in the wall
Gypsum plasterboard is plaster between two sheets of paper and does not contain asbestos. Three things in the same construction can. The textured coating that was skimmed over ceilings and walls, which contained a small percentage of asbestos in products sold into the 1980s, so an artex ceiling is the usual positive in a house. Asbestos insulating board, which is a different board entirely: softer, lower density, usually off white, used for ceilings, panels and linings, and often mistaken for plasterboard by people taking a wall down. And whatever is behind the board, which in an older house can be a flue, lagging or a fire break. So the practical answer is that the board is not the problem and the finish on it, or the board next to it, can be.
An asbestos chimney flue, and the pipe people cut through
Asbestos cement flue pipe is one of the commonest finds in a house and one of the most commonly damaged, because it looks like grey concrete pipe and gets cut, drilled or broken to make room for something else. It was used for gas fire and boiler flues, for vent pipes and as a liner inside masonry chimneys, and it is usually in sound condition until somebody works on it. Intact, in place and undisturbed it is low risk and can be left. The moment it is being removed or altered it is work with asbestos, which for cement is normally non licensed but still controlled: wetted, dismantled rather than broken, double bagged and tipped as hazardous waste. If you are having a boiler or a fire replaced in a pre 2000 house, the flue is the item to ask about before the installer arrives.
Asbestos panels, and the four places they were fitted
Four locations account for most asbestos panel in a house. Infill panels below windows, particularly in 1960s and 1970s housing and flats, where a panel between the sill and the floor is often insulating board. Panels forming the airing cupboard or boxing around a boiler, a warm air unit or a hot water cylinder, put there precisely because the material resisted heat. Ceiling and wall tiles or linings in kitchens, garages and porches. And fire breaks and linings in lofts, behind meter cupboards and around service risers. Most of those are insulating board rather than cement, which matters because work on insulating board is licensed and notifiable. A panel in one of those four positions in a pre 2000 property is a sample and a laboratory result, not a judgement call.
Asbestos in attic spaces, and the one type that must not be disturbed
A loft can hold several forms and they are not equal. Lagging on pipework and around an old water tank is thermal insulation and is among the highest risk material in a house: it is friable, it releases fibre readily, and it is licensed work. Sprayed coating on the underside of a roof or on steelwork is the same category. Insulating board used as a fire break between roof spaces in a terrace, or lining a loft conversion, is licensed work too. Loose fill insulation is rare in the UK but exists, and it is the one that must not be disturbed at all, because there is nothing holding it. Asbestos cement in the loft, usually a water tank or a flue passing through, is the lower risk end. The rule for all of them is the same: do not move the boxes, do not lay new insulation over it, and do not use the loft as storage until somebody has identified what is up there.
An asbestos downpipe, gutter and soffit, outside the house
Rainwater goods and roof trim are where asbestos cement most often survives on the outside of a house: downpipes, gutters, hopper heads, soffits, bargeboards, fascias and the corrugated sheet on a garage or a shed. Outside, in the weather, the material is usually in worse condition than indoors but the exposure risk to occupants is lower. Two practical points. First, it is non licensed work in sound condition and is taken down whole, unscrewed rather than snapped, wetted, wrapped and tipped as hazardous waste, and a roofer offering to smash it into a skip is telling you they do not know what it is. Second, weathered cement sheet sheds fibre into the gutter and the ground below, so the area under a deteriorating asbestos roof is part of the job rather than incidental to it.
How to recognise asbestos by where it is rather than what it looks like
Nobody can identify asbestos by eye, including a surveyor, and anyone who says otherwise is guessing. What can be done reliably is to rank the likelihood by age and position. The age question is one date: built or refurbished before 2000. The position question is the list above plus the obvious industrial suspects, and the useful habit is to treat a material in one of those positions as presumed to contain asbestos until a laboratory says otherwise, which is exactly what the regulations expect of a duty holder. Then the test: a sample taken properly by somebody competent and analysed by an accredited laboratory, which costs little and settles it. Photograph, record the location, and plan the work around the answer rather than around the guess.
Plasterboard asbestos questions, and the three answers that cover them
Three questions account for almost all of them. Does plasterboard contain asbestos: no, gypsum board is plaster between paper. Does the ceiling above it: possibly, if it carries a textured coating from before the mid 1980s, and that is the sample worth taking. Is this board plasterboard at all: that is the real question in an older house, because asbestos insulating board was used in the same positions and looks similar to anybody who is not holding both. The quick discriminators are weight and feel, since insulating board is noticeably lighter and softer and marks with a fingernail, but neither is evidence: the answer is a laboratory result on a sample taken by somebody competent, which costs little against the price of getting it wrong on a wall you are about to take down.
Asbestos in houses uk wide, by the decade the house was built
The date of construction predicts what is likely to be there. Pre 1940 houses mostly have asbestos only where later work added it, which usually means a post war flue, garage roof or artex. The 1950s and 1960s are the peak for asbestos cement outside and insulating board inside: soffits, gutters, garage and shed roofs, infill panels under windows, boards around boilers and airing cupboards, and ceiling tiles. The 1970s add textured coatings across most ceilings, vinyl floor tiles and their bitumen backing, and lagging on pipework. The 1980s see blue and brown asbestos banned in 1985 but white asbestos still in artex, cement and floor tiles. The 1990s taper off and white asbestos was finally banned in 1999. A house built or substantially refurbished after 2000 should have none, and that date is the single most useful thing to establish before anybody starts guessing from a photograph.
Questions people ask about asbestos in plasterboard
Is an artex ceiling dangerous to live under?
Intact, painted and undisturbed, it is a low risk and the regulations do not require its removal. What creates risk is abrasion: sanding it, scraping it, drilling it for a light fitting, or taking the ceiling down. If you want it gone, the two normal routes are over boarding, which leaves it in place, and removal by a contractor working to the controlled methods, which for textured coating is usually non licensed work carried out by trained operatives with the room sealed.
Do I need a survey before a small job at home?
There is no legal duty to survey your own home, which is why this question comes up. The duty to manage applies to non domestic premises and to the common parts of flats. For a homeowner the practical answer is a sample of whatever is being disturbed: if a job involves cutting, drilling or removing a material in any of the positions above in a pre 2000 house, a single laboratory sample costs a fraction of the work and tells the tradesperson whether they can proceed.
Can I take asbestos cement to the tip myself?
Sometimes, and it has to be arranged first. Many household waste sites accept small quantities of bonded asbestos cement from householders by appointment, double wrapped and labelled, and some do not accept it at all. Ring the site before wrapping anything, because turning up with it is refused everywhere. Insulating board and anything friable is not a household waste question: that is licensed work and the contractor removes the waste under their own consignment paperwork.