Read this before you pay for a survey or accept a removal quote. It covers the published cost, what a surveyor looks at on a garage, the decisions the report drives and how to read the result alongside a price.
An asbestos survey answers one question that no amount of looking from the drive can: is this material asbestos, and if so, what kind? The answer decides who may touch the roof, what precautions apply and where the waste can go. It also decides whether a removal quote is built on knowledge or on guesswork.
For a garage with a corrugated cement roof, the survey is usually a short visit and a laboratory result. A surveyor looks at the sheets, the fascias, the soffits and anything else that might contain the material, takes samples of what is uncertain and sends them for analysis. The report comes back with a list of what was found, where, and in what condition.
This page starts with cost and then moves to what the report is for. It belongs to our garage and asbestos roofs work, where the survey result and the roof survey are two separate documents that meet in the same quote.
Everything here is general guidance. The survey of your own garage is what counts, and it is worth having in hand before any roofer climbs a ladder, because the method, the waste route and the final bill all follow from what it says.
What the survey is for
A survey does not fix anything. It tells you what you have so that the next step can be chosen with open eyes. For a garage roof there are three possible answers: the sheets are asbestos cement, they are something else, or the result is mixed because the sheets and the eaves are different materials.
The HSE's starting point is a rule of thumb, not a result. Its guidance treats a building from before 2000, or one refurbished before then, as holding asbestos until shown otherwise. That rule protects people until a test says otherwise, but it cannot tell a roofer which product a particular sheet is made of, or whether the soffit under it is the same.
The survey moves a job from assumption to evidence. That helps in three ways:
- a removal can be planned for the right type of material, and not for the worst case in every direction
- the roofer and any specialist share a written result and not a verbal guess
- the waste route and the paperwork can be settled before the first sheet is touched
It also protects you. A report with a date, a surveyor's name and a list of samples is something you can show a buyer, a lender or an insurer later. Without one, the conversation starts again from the pre-2000 rule, and every new person who sees the garage asks the same questions.
The published cost, and a figure not to mix up
MyJobQuote, in September 2026, gave a typical UK figure of £325 for an asbestos survey. That is a typical figure from a single guide. It is not a Castle price and not a quote for your garage. A single garage with one roof and a few suspect materials is a small piece of work for a surveyor, so it is reasonable to ask for a total that names the visit, the samples and the written report, and to be wary of a price that names only one of them. Ask also how long the laboratory takes, since the roof cannot be planned until the result is back.
| Survey | Typical UK figure | Guide |
|---|---|---|
| Asbestos survey | £325 | MyJobQuote, Sep 2026 |
| Roof survey | around £300 | MyJobQuote, Oct 2026 |
The two figures are close but the surveys are different. The roof survey looks at condition: slipped tiles, failing flashings, a sagging deck. The asbestos survey looks at material: what the sheets are made of. A garage can need both, and neither replaces the other.
What moves a surveyor's price is the number of materials to be sampled, how many buildings are involved, how easily they can be reached and how fast the laboratory result is needed.
A quote that lists a laboratory fee as a separate item is not wrong, but ask what the total is for the visit, the samples and the written report.
What gets looked at on a garage
On a garage, the surveyor works through every part that might contain the material. The roof sheets come first, but they are not the only candidates. The HSE's list of places where asbestos is found includes external soffits, which on a garage means the board under the overhang at the eaves and the verges.
A typical visit takes in:
- the main roof sheets, their ridge pieces and any translucent panels
- the soffit and fascia boards under the overhang
- rainwater goods, such as gutters and downpipes, if they look like cement
- any flue pipe, panel or lining that has been added to the garage over the years
- earlier repairs, patches and overcladding laid over the original sheets
The surveyor takes samples with care, wearing protective equipment and sealing each sample in its own bag, which is another reason not to do it yourself. The HSE treats every asbestos cement roof as fragile, so the surveyor does not walk on the sheets either. Access is from a ladder, a platform or the ground, using the garage wall.
Photos are taken of each material and each sampling point. They tie the laboratory result to the exact part of the garage it came from, which matters when a roofer later has to decide how each section will be treated. A report without photos or locations is much harder to rely on, because a sample number alone does not say which board it came from. Ask for the photos with the report, and keep them together.
What the report decides
A good report turns into decisions. The first is what the material is: asbestos cement, asbestos insulating board (AIB), or something that needs no special handling. The second is its condition, whether intact, weathered or broken. The third is where each material sits on the garage, so the work can be divided sensibly.
Those answers feed straight into the HSE's three groups of asbestos work, which our guide on removing an asbestos garage roof covers in more detail.
- Intact or weathered asbestos cement, taken off carefully, is non-licensed work.
- Cement that is substantially damaged or broken up becomes notifiable non-licensed work.
- AIB, where the risk assessment says the job will not be short, is licensable work for a firm that holds a licence.
The report also settles the waste. Asbestos waste is double-wrapped and labelled, and it goes in a lockable skip or a sealed container. A householder's own small amount can be taken to a Kent County Council recycling centre, Sheerness excepted, within the limits that council sets. A tradesperson's waste from a customer's roof moves on a consignment note.
Last, the report informs the price. A job with intact cement sheets and a clear route is a different job from one with a damaged section and an AIB soffit. A quote written without the survey can only be a guess, and a guess can move once the facts arrive. That is the usual way an early price grows later, and the survey is how you stop it.
The pre-2000 line and what it means for you
The HSE gives the working rule in plain words: where a building dates from before 2000, built or refurbished then, presume asbestos is in it. For a garage, the date can be the build date or the date of the last major work on the roof or the eaves. An old garage with a new roof from 2005 may still have an original soffit.
The rule is a safe default, not a finding. It means that nobody should drill, cut, scrub or break up the old material until it has been checked. It also means a seller, a buyer, a roofer and a builder all start from the same cautious point.
Where the date is unknown, or the garage came with a house that has been altered many times, the safest approach is to treat it as pre-2000. Our page on selling a house with an asbestos garage roof looks at what a buyer's side is likely to ask.
A survey result can also work in your favour. A report that finds no asbestos in the sheets and the soffit means the work can proceed as a standard roof replacement, with the usual skip and the usual waste route. That outcome is every bit as useful as a positive result, and it is a quicker, simpler job. It also saves the cost of a specialist team that the work would otherwise have needed.
Reading a survey next to a quote
A survey report and a removal quote should agree with each other. Read them side by side, and check these points before you accept either.
- Every material the report lists is mentioned in the quote, including the soffit and fascia.
- The quote names the HSE group the work falls under, or says why it falls where it does.
- The method names how the sheets will be lowered, wrapped and stored.
- The waste route is stated: a lockable skip or sealed container, and who carries it.
- Any licensable part is passed to a firm that holds the licence, and the quote says so.
If a quote arrives with no survey behind it, ask for the survey first. A price for a job that has not been identified is not a price, whatever number is written at the bottom. Ask to see the survey, and keep a copy with your house papers for the day you sell.
For a garage that needs a new roof as well as an old one removed, the replacement covering is its own decision. Felt, EPDM and steel sheet are the common choices, and the survey does not choose between them. The roof itself is looked at on site, with photos, before anything is priced.
The written price from Castle Roofing Margate follows that visit and is one total. Cost guides, including the one quoted here, give a sense of scale for the work and cannot stand in for it.
