Bathroom flooring options
Vinyl flooring is cheap, waterproof and easy to fit, suited to budget refits. Porcelain tile is more durable and higher-end but needs a sound, flat subfloor. Underfloor heating compatibility and slip resistance (particularly around a shower) are worth discussing alongside the look you want.
KBSA and TrustMark, what they actually mean
The KBSA (Kitchen Bathroom Bedroom Specialists Association) is the main UK trade body for the sector, though membership is limited to a few hundred companies nationally, so it's not something every bathroom fitter will have. TrustMark is a broader government-endorsed scheme covering many trades — worth asking which, if either, your fitter holds, rather than assuming either is universal.
Why waterproofing (tanking) matters
Tanking is a waterproof membrane applied behind tiles, particularly around showers and baths, to stop water getting into the wall or floor structure below. Skipping this step is a common cause of hidden damp and rot that only becomes visible years later — worth confirming it's included, not assumed, in a refit quote.
Bathroom fitting in older properties
Older properties sometimes have uneven floors, narrower doorways, or pipework not originally designed for modern water pressure — a fitter working on a period property will usually assess these before quoting for anything beyond a straightforward like-for-like swap.
What affects the cost
Cost depends on whether pipework and electrics need moving (not just swapping fixtures in place), the tiling area, fixture quality, and whether structural changes are needed (like removing a bath for a walk-in shower). Moving a toilet's position, in particular, is one of the more expensive changes because of the soil pipe work involved.
Adding a downstairs WC or cloakroom
A ground-floor WC addition usually needs a macerator pump if gravity drainage to the existing waste isn't possible, which adds cost and a small amount of noise compared to a standard gravity-fed toilet. Worth discussing early since it affects where in the house a downstairs WC is practical.
Choosing a bathroom suite
A close-coupled toilet is the standard, affordable choice. A wall-hung toilet looks sleeker and is easier to clean around but needs a concealed cistern built into the wall, adding cost and reducing space behind the wall for other services. Similar trade-offs apply to countertop vs inset basins.
Bathroom plumbing work and WaterSafe
Moving or adding plumbing (a new shower, relocated toilet) should follow Water Fittings Regulations, the same rules a WaterSafe-registered plumber works to. If your bathroom fitter isn't a registered plumber themselves, ask who does the plumbing side and whether they're WaterSafe registered.