Carpenters and joiners insurance UK: workshop and site cover
Workshop and site are different risks
In the workshop the exposure is concentrated: timber, dust, finishing products, spray booths and static machinery under one roof, plus part-finished customer work sitting on the bench. Fire is the dominant peril and insurers underwrite it on housekeeping — dust extraction, waste and offcut management, separation and storage of finishes and solvents, electrical inspection, and whether spraying or hot works happen on the premises. Machinery breakdown and the loss of a single irreplaceable machine can stop production as effectively as a fire, so business interruption should be set on how long it would take to source, install and commission replacements, not on a default twelve months.
On site the exposure is dispersed and contractual. You are working alongside other trades, in a building you do not control, to an order that dictates your insurance limits, your indemnity obligations and often who carries the risk in the works themselves until practical completion. The insurance question on site is rarely “what could go wrong” and much more often “what have we already agreed to be responsible for”.
Public liability and the limits main contractors demand
Public liability responds to injury to other people and damage to property that is not yours — the classic joinery examples being a nail or screw through a concealed pipe or cable, a dropped panel damaging a finished floor, water damage from a disturbed service, or a member of the public injured near an unsecured opening. It is not a legal requirement in itself, but it is a contractual one on almost every commercial site.
The practical point is the limit. Main contractors and principal contractors routinely set a minimum public liability limit in their subcontract order or pre-qualification pack, and the figure has drifted upward: many now require more than the level a small joinery firm would buy unprompted, and larger schemes, public sector work and anything touching rail, utilities or aviation set higher requirements again. Read the order before you price the job, because increasing a limit mid-contract is possible but adding it after an incident is not. Watch for two other clauses: an indemnity to principal or contractual liability requirement that extends your cover to obligations you have signed up to, and a requirement to name the contractor as an additional insured or note their interest. Both need to be reflected in the policy, not just promised.
Damage to the part of the works you are actually working on is normally excluded from public liability — that is contract works territory, dealt with below. Our contractors insurance guide covers how the liability sections fit together across the trades.
Tools and plant, own and hired in
Tools cover is where joiners lose money quietly. A few points decide whether the claim pays. First, the sum insured: it should be the cost of replacing everything you carry, including the cordless ecosystem, batteries and chargers, jigs, clamps, measuring and setting-out kit, and anything you have accumulated over years without ever adding to the schedule. Underinsurance conditions apply here as they do to stock.
Second, the basis of settlement. New-for-old on tools is not universal; many wordings settle on an indemnity basis with deduction for wear and tear, which on a five-year-old saw is a large deduction. Third, and most important, the overnight vehicle condition. Cover for tools left in a van overnight is very commonly restricted or excluded outright, and where it is given it is usually conditional on the vehicle being locked, alarmed or immobilised, on the tools being in a locked internal container, and on the van being in a locked garage or on a secured compound between stated hours. Read that condition before you rely on it. Individually specified high-value items and a separate limit for tools left on site in a locked store are both worth asking for.
Hired-in plant is a separate section and a separate trap. Under most standard hire conditions you are responsible for the plant from delivery until collection — for physical loss and damage and, on many contracts, for continuing hire charges while a damaged item is off hire and being repaired or replaced. Hired-in plant cover should be written for the maximum value on hire at once and should include continuing hire charges where the hire terms impose them. Check whether the section covers plant hired from another contractor as well as from a hire company.
Works in progress, contract works and goods in transit
Between the timber arriving and the job being signed off, part-finished work is exposed and often uninsured. Three covers deal with the stages. Work in progress covers part-completed items in your workshop and should be set at the value at the busiest point in your production cycle, not the average. Goods in transit covers finished joinery on the road to site — a staircase, a run of units, a shopfront — and needs a limit that reflects your largest single load and a wording that does not exclude the vehicle being left loaded.
Contract works (sometimes called contractors’ all risks) covers the works themselves while you are constructing or installing them, up to practical completion. Whether you need it depends on what the contract says: on many building contracts the employer or main contractor insures the works and your obligation is limited, while on direct work for a private client, or where the order makes you responsible for your own works until handover, the risk is yours. Free-issue materials and customer-supplied items should be specifically covered, because they belong to someone else and are not your stock.
Employers’ liability: a legal duty, not an option
If you employ anyone, employers’ liability insurance is generally compulsory under the Employers’ Liability (Compulsory Insurance) Act 1969, with cover of at least £5 million. A business can be fined up to £2,500 for each day it is not properly insured, and the certificate must be available to employees, with a further fine of up to £1,000 for failing to display it. In joinery the definition of “employee” deserves attention: labour-only subcontractors, apprentices, agency workers and casual weekend help are generally treated as employees for this purpose, because they work under your direction and with your equipment, whereas a bona fide subcontractor working to their own methods with their own tools and their own insurance is not. Getting that split wrong is one of the more common findings at a claim or an audit. Collect and diary your subcontractors’ certificates, and declare the labour-only wage roll honestly. More on our employers’ liability page.
Hot works, where they apply
Most joinery is not hot work, but the moment anyone on your account uses a blowtorch, a hot air gun on a lead or roofing detail, a grinder or disc cutter, or bitumen and heat-applied products — or where you sit alongside a trade that does — the hot works condition in the policy becomes live. Typical wording requires a written permit, the removal or protection of combustible material within a stated distance, extinguishers to hand, and a fire watch maintained for a specified period after work stops, commonly an hour. Breach it and the fire claim can fail. Spray finishing and solvent storage in the workshop attract their own conditions in the same way. If your work genuinely never involves heat, say so at presentation — it is a favourable underwriting feature, not a formality.
Design liability: the point where public liability stops answering
This is the exposure joiners most often carry without cover. Public liability responds to injury and damage. It does not respond to the cost of putting right work that is simply wrong, and it does not respond to pure financial loss caused by a specification or design decision. The moment you do more than build to someone else’s drawing — you size a structural element, detail a fixing method, select a material or an ironmongery specification, work out how a staircase meets building regulations, advise on fire-rated doorsets or their installation, or take on a design-and-install package for a fit-out — you have taken on a design obligation, and the exposure is professional indemnity, not public liability.
It is worth being precise about why. If a bespoke stair you designed does not comply and has to be taken out and rebuilt, the loss is the cost of your own defective work and the delay it causes — economic loss, excluded from public liability, and squarely a PI question. Many subcontract orders now include a design warranty or a fitness-for-purpose obligation, and a fitness-for-purpose wording is often uninsurable, because insurers cover reasonable skill and care rather than a guaranteed outcome. That is a clause to negotiate before signature, not after. Our design liability and fit-out insurance page sets out how the two covers are made to meet without a gap between them.
What a broker does differently here
The useful work happens before the job starts. We read the subcontract order and the pre-qualification pack against the policy schedule: the public liability limit, the indemnity to principal clause, any additional insured requirement, the works insurance obligation and any design warranty. We check the tools sum insured against what is actually in the van and the overnight condition against how you actually store it. We set work in progress and goods in transit against your busiest week rather than a round number. We check hired-in plant limits against the hire terms including continuing charges. And where any design element exists, we say so plainly and arrange professional indemnity to sit behind it rather than hoping the liability section stretches.
Apex is Bristol-based and FCA-regulated, and we arrange cover for joinery workshops and site joiners across the UK. Our construction sector page and the commercial insurance hub cover the wider programme if you run several trades or contracts at once.
Frequently asked questions
What public liability limit do main contractors ask joiners for?
It is set by the contract, not by the trade, so the only reliable answer is to read the order or pre-qualification pack before pricing the work. Commercial sites commonly specify a minimum well above what a small joinery firm would buy unprompted, and public sector, rail, utilities and aviation schemes set higher requirements again. Check at the same time for indemnity to principal wording and any requirement to note the contractor’s interest, because both have to be reflected in the policy.
Are my tools covered if they are stolen from the van overnight?
Only if the policy says so, and usually only on conditions. Many tools sections restrict or exclude cover for items left in a vehicle overnight, and where cover is given it typically requires the van to be locked and alarmed or immobilised, the tools to be in a locked internal container, and the vehicle to be garaged or on a secured compound between stated hours. Check the settlement basis as well — indemnity wordings deduct for wear and tear rather than paying new for old.
Does public liability cover a joinery job that has to be redone?
No. Public liability responds to injury to other people and damage to property that is not yours; the cost of putting right your own defective workmanship, and the financial loss flowing from it, sits outside it. If the fault traces back to something you specified, sized, detailed or selected, that is a design exposure and belongs to professional indemnity. If it is purely poor execution, it is generally a commercial cost rather than an insured one, which is why the contract terms and the workmanship warranty matter.
Do I need professional indemnity as a joiner?
If you only build to drawings supplied to you, often not. If you contribute any design — sizing a structural member, detailing a fixing, selecting materials or ironmongery, working out compliance for a staircase or a fire-rated doorset, or taking a design-and-install fit-out package — then yes, because that exposure is excluded from public liability. Check the subcontract order too: many now impose a design warranty, and a fitness-for-purpose obligation is often uninsurable and worth negotiating out before you sign.
This page is insurance information, not legal advice. It reflects general UK market practice and the law as at August 2026; policy wordings differ, so check your own schedule and conditions.
Apex Insurance Brokers Limited is authorised and regulated by the Financial Conduct Authority (FRN 724952). This page is general information, not advice on a specific policy.