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Loft bathrooms in South Glamorgan

From Cardiff and Barry to Penarth, we cover loft bathrooms in South Glamorgan. Here is what to expect on price, timing and the rules that apply in Wales.

£6,000–£12,000 inc VAT6–12 working days4 towns listed
Loft shower room under a sloping ceiling with a roof window

What does a loft bathroom cost in South Glamorgan?

Our guide range in South Glamorgan is £6,000–£12,000 including VAT. Prices in South Glamorgan run at about 7% below the UK guide, based on Wales labour rates.

Refit

£5,100–£7,900
  • Existing loft shower room

New loft bathroom

£9,300–£16,750
  • Ventilation and electrics to regulations

Guide prices for South Glamorgan including VAT. Your itemised written quote after the free survey is the price that counts.

Which towns do we cover in South Glamorgan?

Most of South Glamorgan has moderately hard water. A quick wipe of the glass and an easy-clean coating are worth having on a new shower in Cardiff. Hardness varies street by street, so check the figure for your postcode with your water supplier. For a loft bathroom in a tank-fed Cardiff home, we work out how the shower will get its pressure before choosing a single fitting.

What the job includes

  • A shower pump on a gravity system, an electric shower, or advice on moving to mains pressure, depending on your system
  • A drainage route from the loft to the soil stack with enough fall, or a pumped waste or macerator where the rules allow it
  • A check of the floor joists where a bath or large shower tray will sit
  • A check of your hot-water system and of the pressure and flow you actually get at loft level
  • A survey of the headroom across the room, with the usable height marked at each fitting position
  • Electrics by a qualified electrician, tested and certified, then tiling, testing and handover

Decisions to make first

Bath or no bath

A bath under the slope makes good use of low space, but the floor has to carry it when it is full of water and someone is in it.

Gravity or pumped waste

Gravity is silent and maintenance-free. A pumped waste or macerator lets fittings sit away from the stack, provided the house has a WC on gravity drainage elsewhere.

Getting the water pressure

A pumped shower suits a gravity system with a cold tank; an electric shower heats cold mains water at the point of use; a combi or unvented cylinder gives mains pressure throughout.

Where the shower goes

Under the ridge or in a dormer, where the full height is. A walk-in shower with a single panel is usually easier to fit to a roof line than a framed enclosure.

Rules that apply in Wales

A bathroom inside an existing loft room does not usually need planning permission, but forming one is normally building-regulations work because of the new drainage, extract ventilation and electrics. A macerator or pumped WC is acceptable only where the home also has a WC on gravity drainage. Under the water fittings rules, a shower pump must never be connected directly to the mains supply.

Wales applies its own Part P, with a wider notifiable list than England, and its own Part F with similar extract rates. Part H covers the new drainage route down from the loft.

Loft bathrooms in South Glamorgan: questions

How much does a loft bathroom cost in South Glamorgan?

A loft bathroom in South Glamorgan typically costs £6,000–£12,000 including VAT, based on Wales prices. The free survey and itemised written quote give you the exact figure for your home.

Which towns in South Glamorgan do you cover?

We cover the whole of South Glamorgan, including Cardiff, Barry, Penarth and Llantwit Major. If your town is not listed, we still cover it — get in touch with your postcode.

How long does a loft bathroom take?

Most jobs take 6–12 working days on site once the products have arrived. We confirm a start date and a day-by-day plan when you approve the quote.

Is the water hard in South Glamorgan?

Most of South Glamorgan has moderately hard water. A quick wipe of the glass and an easy-clean coating are worth having on a new shower in Cardiff. Hardness varies street by street, so check the figure for your postcode with your water supplier.

Can you put a toilet in a loft?

Yes, if the waste can fall to the soil stack or a macerator can be used. Gravity drainage is the first choice; a macerator is only allowed where the home already has a WC on gravity drainage, which in most houses means the main bathroom.

Loft bathrooms in South Glamorgan

Book a free home survey anywhere in South Glamorgan. You get a measured layout and an itemised written price.