Loft bathrooms in Windsor

Postcode districts: SL4
Nearby: Slough, Egham and Staines
Guide price: £7,300–£14,500
Typical time on site: 6–12 working days
Water: Hard across most of Berkshire
Survey: Free, at your home

What does a loft bathroom cost in Windsor?

As a guide, budget £7,300 to £14,500 including VAT for a loft bathroom in Windsor; your written quote will pin it down. We adjust the national guide for South East England, where prices are typically about 12% above the UK average. The figure depends on the size of the room, whether anything moves, and the products you pick.

Refit

£6,200–£9,500

Shower, basin and WC replaced

Typical

Signature

£9,000–£14,500

Pump or macerator where needed

New loft bathroom

£11,250–£20,250

Formed in an existing loft room

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

Working in Windsor

We cover every part of Windsor, including SL4, and nearby Slough (1.8 miles) and Egham (4.1 miles).

In Windsor, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. If your Windsor loft shower is weak or the waste drains slowly, the fix is often in the pump or the pipe fall rather than the shower itself. We plan loft bathrooms in Windsor around the roof line, so the shower sits where you can stand and the eaves become storage.

Supplies across most of Berkshire are hard. If your supply in Windsor is the same, limescale on shower glass and heads is a real issue: easy-clean glass, rub-clean nozzles and a squeegee make a big difference. Hardness varies street by street, so check the figure for your postcode with your water supplier.

What the job includes

Fitted furniture made to the eaves, so the low space behind the slope becomes storage
Electrics by a qualified electrician, tested and certified, then tiling, testing and handover
An extractor fan ducted through the roof or a gable wall, with the duct insulated through cold spaces
A survey of the headroom across the room, with the usable height marked at each fitting position

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.

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 England

In England, new drainage and a new connection to the soil stack fall under Part H, a new bathroom needs extract of 15 litres per second intermittent or 8 litres per second continuous under Approved Document F, and new circuits are notifiable under Part P. If the work includes an unvented hot-water cylinder, it must be fitted by a G3-qualified installer.

More about loft bathrooms

Loft bathrooms in Windsor: questions

How much should I budget for a loft bathroom in Windsor?

A loft bathroom in Windsor usually costs £7,300–£14,500 including VAT. Room size, layout changes and your choice of products move the figure within that range. The free survey gives you an itemised quote, fixed in writing once the details are agreed.

Is the water hard in Windsor?

Who handles building control for a loft bathroom in Windsor?

Building control for Windsor is handled by the local council or an approved inspector. If your job needs sign-off — for example a new circuit, new drainage or a new extractor where there was none — we tell you at the survey and handle the notification as part of the work.

How long does a loft bathroom take?

Allow 6–12 working days on site for most jobs, plus the lead time for products after you approve the quote. We give you a day-by-day plan before work starts in Windsor.

How much headroom do you need for a loft shower?

Plan for around 2 m of clear height over the whole shower area, and enough standing height in front of the basin and WC. A bath can sit lower under the slope as long as you can stand up where you get in and out. We mark the usable height at each position on the survey drawing.