customers who buy their own materials
What to Do When a Client Wants to Supply Their Own Materials
Client rings up: "I've already bought the boiler/tiles/decking, can you just fit it?" Sounds like a money-saver for them and an easy job for you. It isn't. When something goes wrong with kit you didn't supply, guess who they blame? Never warranty materials you didn't buy, and put that in writing before you lift a tool. That one line saves you the worst arguments in this trade.
You can still take the job. You just need to set the terms first, so a £20 dodgy fitting doesn't cost you a £600 callback for free.
Why this gets messy fast
When customers who buy their own materials hand you the kit, three things go wrong: it's the wrong spec, it's missing parts, or it's cheap rubbish that fails in six months. And because your hands fitted it, they assume your labour failed.
The risks you're carrying
- Wrong size, wrong colour, or short on quantity - and you're stood idle waiting for a delivery you can't chase.
- No manufacturer warranty support because they bought from a dodgy online seller.
- Damaged or faulty goods you only spot once they're half-installed.
- You lose your trade markup - that 10-20% on materials is real money gone.
What to do instead
- Inspect everything before you start. Photograph it. Note anything missing or damaged.
- Charge your full labour rate - don't discount because they 'saved you a trip'.
- Refuse outright if the kit is unsafe or non-compliant. Your name's on the work.
- Get the terms signed before day one, not after the leak.
The terms script that covers you
Copy this onto your quote or send it as a message before you accept. Plain English, no legal waffle - but it draws the line clearly.
Materials supplied by client: You (the client) are supplying the [boiler / tiles / units] for this job. 1. I will inspect all supplied materials before work begins. Any faults, damage or shortages found are your responsibility to resolve, and may delay or pause the job. 2. My warranty covers my labour and workmanship only. I cannot warranty materials I did not supply. Any product fault is a matter between you and your supplier. 3. If supplied materials are unsuitable, unsafe or non-compliant, I reserve the right not to fit them. Labour already carried out remains chargeable. 4. Delays caused by missing or wrong materials are charged at my standard hourly rate. Please confirm you accept these terms before work starts.
Where new tradies get this wrong
- Verbal terms only. "I told him I don't cover his taps" means nothing six months later. If it's not written and accepted, it didn't happen.
- Discounting labour to be 'fair'. They saved on materials, not on your skill. Charge full rate - fitting cheap kit is often harder, not easier.
- Fitting unsafe gear to avoid the awkward chat. If it's not to spec, walk away from that part. A gas or electrical failure with your name on it is career-ending, not awkward.
Make the terms part of the quote
The cleanest way to handle this is to bake it in before you even start. With Quotato you can add a custom warranty waiver or note straight onto the quote, so the client accepts your materials terms the moment they accept the price - no separate email, no "I never agreed to that". It sits there in black and white on a professional-looking quote, signed off online, archived for good.
One tidy document does the job: the price, the line items, and the get-out clause that stops a client's bargain boiler becoming your problem.
Don't let someone else's cheap materials cost you your reputation. Set the terms first, every time.
Build a quote with your own materials terms baked in - free.
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