Building Regulations UK – Fitting a Light in a Bathroom
bathroombuilding-regulationselectrical
What designs of lights are allowed?
When do I need to get a building regulation inspection?
Best Answer
Depends on the distance from water. Homebase, of all people, have a good guide here.
In summary, lights in the bath must be 12V and completely waterproof (zone 0). If it's in reach of a bath (standing up or sitting down) your choices are limited to completely waterproof sealed units (rated IPX4) and you'll need a 30mA RCD (zone 1). Other areas at risk of splashing (Zone 3, including above sinks) need IPX4 splash-resistant fittings but don't need the RCD. Outside of that - in zone 3 - anything will do.
You may need to have the completed work inspected under Part P of the buildings regulations. Give buildings control at your local council a call - they can advise.
Planning Permission determines whether you are allowed to make the change. The DirectGov site has information about when you need to apply. You need planning permission before you start building - ideally before you hire a builder. You will need architects plans to obtain permission.
It is possible to get planning permission retrospectively, but don't rely on this. If you fail you will have to demolish your extension/building and restore the site.
Building Regulations determine whether what you have built is legal (safety, insulation etc.). There's some information on the Government's Communities site
An inspector will visit your site at regular intervals or by appointment during the build to check that each stage meets the regulations. Work shouldn't start on the next stage until this has happened as you might have to redo aspects which would be a waste of time and money.
Some types/size of building/extension don't need planning permission, but will still need to pass inspection. The exemptions will depend on where you are.
This is probably one of those cases where quoting from the linked pages is a bad idea as these can and do change quite frequently and there may be local regulations which supersede the national ones (Conservation areas for example).
Different countries, or even more specific, the localities in the US use different standard. Even when they adopt a standard, they may use a specific year of adoption. I suggest more detail, or contact the building officials for details on the code that they use.
Best Answer
Depends on the distance from water. Homebase, of all people, have a good guide here.
In summary, lights in the bath must be 12V and completely waterproof (zone 0). If it's in reach of a bath (standing up or sitting down) your choices are limited to completely waterproof sealed units (rated IPX4) and you'll need a 30mA RCD (zone 1). Other areas at risk of splashing (Zone 3, including above sinks) need IPX4 splash-resistant fittings but don't need the RCD. Outside of that - in zone 3 - anything will do.
You may need to have the completed work inspected under Part P of the buildings regulations. Give buildings control at your local council a call - they can advise.