Bathroom Electrical Upgrades | NAPIT Registered, Zone Compliant | C-Lec Electrical
Bathroom Electrical • Specialists

Bathroom Electrical
Upgrades and Installations

Bathroom electrics handled properly. IP rated zone-compliant lighting, heated towel rails, electric showers, underfloor heating, extractor fans and mirror lights. Every job certified to BS 7671 18th Edition with the right IP rating for the right zone.

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From: £165 Per Fitting
Compliance: BS 7671 18th Edition
Approval: NAPIT & Part P Approved
At a glance

Bathroom electrical work is governed by strict zone rules under BS 7671. Every fitting in or near a bath or shower must have the correct IP rating to prevent water ingress. Standard kitchen-grade light fittings cannot legally be installed in bathroom zone 1 or 2. We handle the lot: zone-compliant downlights, IP rated extractor fans, electric showers, heated towel rails, underfloor heating, mirror lights and shaver sockets. Every job is fully certified, building control sign-off included where notifiable.

Why this matters

Bathroom electrics done wrong are seriously dangerous

Bathrooms are the riskiest rooms in any home for electrical work. Water and electricity do not mix and the regulations exist for good reason. We see far too many bathrooms with the wrong IP rating fittings, missing isolators, no RCD protection on shower circuits and DIY install jobs that fail EICR inspections months later.

Every bathroom job we do is properly designed against the current zone rules, fully tested before sign-off and certified through NAPIT. The certificate gets you compliance with building regulations and works as evidence for insurance and conveyancing.

  • Correct IP rating selected for every zone (IPX4 to IPX7)
  • RCD protection on every bathroom circuit (mandatory)
  • Isolators fitted outside the bathroom for safe servicing
  • Building control sign-off through NAPIT competent person scheme
  • Full certification: EIC, MWC and NAPIT registration within 30 days
Zone Rules Every Job Designed Against BS 7671 Bathroom Zone Regs
NAPITRegistered
Part PApproved
IPX7Zone 0 Compliant
12 MthWorkmanship Guarantee
BS 7671 18th Edition Certified
Bathroom electrical stats

Why bathroom regs
are non-negotiable

Bathroom electrical accidents are statistically more dangerous than in any other room. The zone rules in BS 7671 exist to keep people safe.

3zones

BS 7671 Bathroom Zones

Zones 0, 1 and 2 around any bath or shower. Each zone has its own minimum IP rating requirement to prevent water ingress damaging fittings.

IPX7min

Zone 0 Requirement

Inside the bath or shower itself. Fittings must withstand temporary submersion. SELV (12V or 24V) supply required.

30mARCD

Mandatory Protection

Every circuit serving a bathroom requires RCD protection at 30 milliamps trip current. Cuts power instantly on any earth fault.

1day

Typical Upgrade

Most bathroom electrical upgrades are completed in a single working day. Full rewires or major renovations take two to four days.

What we install

Every type of bathroom
electrical upgrade

Zone Compliant Lighting

IP65 LED downlights, illuminated mirrors with demister, recessed feature lighting and waterproof shower enclosure lights. All correctly rated for bathroom zones.

From £85 per fitting

Heated Towel Rails

Electric and dual-fuel towel rails wired with proper isolators outside the bathroom. Programmable timers and smart thermostat options available.

From £225 install only

Electric Showers

Full electric shower install or upgrade. Dedicated 9.5kW or 10.5kW circuit from the consumer unit, ceiling mounted pull cord and proper RCD protection.

From £395 install only

Underfloor Heating

Electric underfloor heating mats fitted under tiles. Smart thermostat, timer programming and full integration with the rest of your bathroom electrics.

From £495 typical

Extractor Fans

Humidistat, timer and constant-running fans wired to comply with Building Regs Part F. Required by law in any bathroom without an opening window.

From £165 fitted

Mirror Lights & Sockets

LED illuminated mirrors with demister pads, sensor-activated lighting and properly rated shaver sockets. Plus IPX4 outdoor sockets where applicable.

From £145 fitted
Bathroom zones explained

IP zones, the rules
and what fits where

BS 7671 splits every bathroom into zones based on distance from water. Each zone has a minimum IP rating that fittings must meet. Here is what each zone means in plain English.

Zone 0

Inside the Bath or Shower

The interior of the bath itself or the shower tray area. Anything fitted here must be IPX7 rated and run on SELV (12V or 24V) extra low voltage supply.

Min Rating: IPX7 SELV

Zone 1

Above Bath / Showerhead Area

Above the bath or shower up to 2.25m from the floor. Allowed: IPX4 fittings, electric showers and instantaneous water heaters. No sockets or switches.

Min Rating: IPX4

Zone 2

0.6m Outside Zone 1

The 60cm zone extending outwards from the edge of the bath or shower. IPX4 fittings, shaver sockets allowed if they meet BS EN 61558-2-5 specifications.

Min Rating: IPX4

Outside

Beyond Zone 2

The rest of the bathroom outside zones 0, 1 and 2. Standard IP20 fittings allowed but RCD protection still required on all bathroom circuits.

Min Rating: IP20 + RCD

How it works

From quote to certified
install in five steps

1

Free Phone Consultation

Tell us what you want adding or upgrading. We give you a rough idea of cost and timing over the phone.

2

On-Site Survey

We visit, measure the room, plan zone compliance, check the consumer unit and confirm cable routes.

3

Fixed Quote

Written fixed-price quote covering materials, labour, certification and any building control fees.

4

Install & Test

Most jobs completed in one day. Full testing to BS 7671 with insulation resistance, RCD trip times and earth loop checks.

5

Certified & Signed Off

EIC or MWC certificate issued. Building control sign-off through NAPIT within 30 days. 12 month workmanship guarantee.

Need bathroom electrics done?

Free Quote,
Honest Advice

Most bathroom electrical jobs are surveyed within 48 hours. We will tell you straight what zone compliance looks like for your specific layout and which fittings work where.

NAPIT registered • Part P approved • 12 month guarantee
Call Today Get a Quote
Common mistakes

Bathroom electrical
mistakes that fail EICRs

A snapshot of bathroom issues we are most often called to fix. These all show up as C2 fails on EICR inspections.

!Wrong IP RatingIP20 downlights in zone 1
!Standard SocketsInside bathroom not allowed
!No Extractor FanWhere no opening window exists
!No RCD ProtectionMandatory on every circuit
!No Isolator SwitchOutside bathroom for safe servicing
!DIY Shower InstallUndersized cable, no sign-off
!No Earth BondingPipes not bonded to MET
!Towel Rail on LightingWrong circuit, not isolated
!Pull Cord FaultyWorn or replaced wrongly
!Visible Junction BoxesInside the bathroom
!No Building ControlNotifiable work never signed off
!Old Pull SwitchesPre-modern fittings still in zone 1

If your bathroom has any of these. We can put it right and certify it.

Why C-Lec

Certified, compliant,
fully signed off

Cert

NAPIT Registered

Every bathroom job comes with a NAPIT certificate, building control compliance and full electrical certification to BS 7671 18th Edition.

Part P

Self Certify

Part P approval lets us self-certify all notifiable bathroom electrical work. No separate building control fee or wait for inspection.

Zones

Compliance Built In

Zone-correct IP rating selected for every fitting. No surprises at EICR time, no remedial work needed when you sell.

12 Mth

Workmanship Guarantee

Twelve month workmanship guarantee on every install. If anything goes wrong inside that period we come back and put it right.

Areas we cover

Local cover across
Bedfordshire, Bucks & beyond

We are based in Bedford and cover the wider region for domestic and commercial work. The majority of our jobs come from these towns:

MKBedford & Surrounding Villages MKMilton Keynes (All Postcodes) MKKempston & Wixams MKAmpthill & Flitwick NNNorthampton NNWellingborough & Rushden LULuton & Dunstable LULeighton Buzzard SGBiggleswade & Sandy PESt Neots & Huntingdon HPAylesbury & Tring CBCambridge Outskirts
Frequently asked

Bathroom electrical questions, answered fast

Can I have sockets in my bathroom?
Standard 13A sockets are not permitted in zones 0, 1 or 2 of a bathroom. Outside zone 2 sockets are permitted only if they are at least 3m horizontally from the edge of any bath or shower in larger bathrooms and they must have RCD protection. Shaver sockets compliant with BS EN 61558-2-5 are permitted in zone 2 because they use an isolating transformer.
What IP rating do I need for bathroom downlights?
Downlights in zone 1 (above the bath or shower up to 2.25m) need a minimum of IPX4. Most bathroom downlights you see in showrooms are rated IP65 which gives a comfortable margin and is dust-tight. Outside zones, IP20 fittings are technically allowed but most installers use IP65 throughout for consistency.
Do I need to notify building control for bathroom electrical work?
Yes. Most bathroom electrical work is notifiable under Part P of the Building Regulations. This includes any new circuit added, any consumer unit upgrade and any alteration in a special location like a bathroom. We are NAPIT registered which means we self-certify under the competent person scheme. The notification is sent to your local council automatically within 30 days.
How much does it cost to wire an electric shower?
Wiring a new electric shower from scratch typically costs £395 to £550 depending on cable run length, the existing consumer unit capacity and whether a dedicated RCBO needs adding. The shower unit itself is separate. We always provide a fixed written quote after the survey.
Why does my extractor fan need an isolator?
All extractor fans (and any fixed electrical appliance) need a means of isolating the power supply outside the bathroom for safe servicing. Typically this is a fan isolator switch fitted just outside the bathroom door. Without one, replacing or servicing the fan means tripping the whole circuit at the consumer unit.
Can I add underfloor heating to my existing bathroom?
Yes but it usually requires a new dedicated circuit from the consumer unit and a new thermostat fitted outside the bathroom (or wired through the wall via a sensor). The heating mat itself sits under the tile adhesive. Best done as part of a wider bathroom refurb when the floor is being lifted anyway.
Are smart bathroom mirrors safe?
Yes provided they are properly zone-rated and installed correctly. Most LED illuminated mirrors with demister pads and Bluetooth speakers are IP44 rated for zone 2 use. We hardwire them through a fused spur with isolation outside the room rather than relying on a plug socket.
Do you cover commercial bathrooms?
Yes. We do commercial bathroom electrics for offices, restaurants, gyms, hotels and HMOs. Same zone rules apply but with additional requirements for emergency lighting, fire alarm interlinks and disabled access compliance where applicable.
Book your bathroom electrics

Bathroom Electrical
Upgrades, Done Right

Free written quotes, NAPIT registered, every job certified to BS 7671 18th Edition. Most bathroom jobs surveyed within 48 hours and completed in a single day.

Call Today Get a Quote