Why We Spend £66 on a Tin of Paint for Your Bathroom Ceiling

Every job we do, there’s a list of small decisions that nobody ever asks us about. The customer’s focused on the tiles, the suite, the shower — understandably, that’s the exciting stuff. But there’s a load of less glamorous choices that quietly determine how the bathroom looks and performs three, five, ten years down the line.
Paint is one of them.
We’ve just stocked up on supplies for an upcoming job, and one of the items on the list was a tin of paint for the ceiling. It cost £66. You can get a tin of bathroom paint from a shop brand for less than half that. So why don’t we?
Not all “bathroom paint” is equal
We use Dulux Trade Diamond Matt. A couple of things about it specifically:
- It’s matt — so no shine, no reflections, nothing that draws attention to a slightly uneven ceiling (which, on a reskimmed ceiling, is more common than people think)
- It’s moisture and stain resistant
- It’s scrubbable — you can actually clean it without the finish wearing away
That combination matters in a bathroom more than almost anywhere else in the house. Every time you shower, the room fills with steam. That moisture has to land somewhere — and in most bathrooms, a fair amount of it ends up on the ceiling and walls.
What happens with cheaper paint
A cheap shop-brand paint will go on the wall and look fine on the day. The problems show up later.
The biggest issue is that cheaper paints tend to be very watery — thinner, less pigment, less of whatever makes a paint actually do its job. That means you need more coats to get proper coverage in the first place, which already starts to eat into the saving. But the bigger problem is what happens once the room is back in use.
A paint that isn’t properly moisture resistant will start to let damp through to the surface over time. That’s when you see mould starting to appear — usually first in the corners of the ceiling, or anywhere steam tends to collect. Once mould gets a foothold in paint that isn’t designed to resist it, it’s a losing battle. You can wipe it off, it comes back. Eventually you’re repainting a bathroom that’s only a year or two old.
A paint that isn’t scrubbable has a similar problem from a different angle. Bathrooms need cleaning more than most rooms — splashes, condensation marks, the odd bit of toothpaste on the wall near the sink. If the paint can’t handle being wiped down without the finish degrading, it starts looking tired much faster than it should.
The bit nobody sees — the mist coat
On most of our jobs, we’re reskimming the ceiling and often the walls too — fresh plaster needs proper preparation before the final paint goes on. We always seal new plaster with a mist coat first: a heavily watered-down coat of the same paint, applied before the proper coats go on.
The point of a mist coat is to let the paint bond properly with the fresh plaster. Skip this step, or do it badly, and you can end up with paint that doesn’t key into the surface properly — which shows up later as patchy areas, or paint that’s more prone to lifting or marking.
It’s another one of those steps that’s completely invisible in the finished bathroom. Nobody ever looks at a freshly painted ceiling and thinks “ah, I bet that had a proper mist coat.” But it’s part of why the finish lasts.
Is it applied any differently?
Not really — that’s part of what makes this an easy decision. A good quality bathroom-specific paint like Diamond Matt doesn’t need any special technique or extra time to apply compared to a standard paint. It goes on the same way, with the same number of coats once the surface is properly prepared. The difference isn’t in the application — it’s in what the paint is actually made of, and how it performs once the room’s back in daily use.
£66 versus £30 — is it really worth it?
On a job costing several thousand pounds, the difference between a £30 tin of paint and a £66 tin of paint is genuinely small money. But it’s the kind of small money that, multiplied across every wall and ceiling in the room, either gives you a finish that looks good for years — or one that starts showing problems within twelve months.
This is really the same principle that applies to everything else we use — Mapei waterproofing, branded suites, proper tanking before tiling. None of it is the most expensive option on the market. All of it is the option that means the job is still looking and performing well long after we’ve left.
It’s a small thing. But it’s exactly the kind of small thing that separates a bathroom that looks great on completion day from one that still looks great five years later.
Thinking about a bathroom renovation in Cheshire?
Every material choice we make — from the paint on the ceiling to the waterproofing behind the tiles — is chosen for how it performs over the long term, not just on the day we finish. If you’re in Middlewich, Sandbach, Northwich, Knutsford, Holmes Chapel or Winsford and thinking about a new bathroom, call Martin on 07734 703414 for a free, no-obligation quote.
Cheshire Bathroom Fitters — based in Middlewich, working across Cheshire for over 20 years.
