B is for… bathroom building regulations

B is for… bathroom building regulations

It’s time for the second instalment of our A to Z guide, and today we thought we’d go for an element of alliteration. So here is all you need to know about bathroom building regulations if you are considering converting your loft into a bathroom.


Building Regulations
If your loft has never been used for a bathroom before, you may require approval to ensure that the drainage and electrical works meet with UK building regulations. It is essential that your new bathroom will have sufficient ventilation and drainage, as well as meet the requirements with regards to structural stability, electrical and fire safety.

There are several points of consideration with respect to bathroom loft conversions.

Your ground floor toilet must be accessible
All homes built after 1999 will have a ground floor toilet installed, designed to cater for any visiting wheelchair users. You should ensure that this toilet is not removed and that accessibility is not made worse as it would then be deemed unsuitable for future wheelchair users. Therefore, if you are planning to convert your loft into a bathroom, is it important to bear in mind that you must still retain the ground floor toilet.

Can the existing loft floor hold extra weight?
As using your loft for a bathroom may significantly increase the weight on the floor, work may be required to strengthen your loft floor before you are able to get started on your new bathroom. For instance, if your loft floor structure consists of timber joists and boards, there is a much increased risk of the floor being overloaded from the bath once it is full of water and in use. For such a case, floor strengthening work would be required. You can ask a structural engineer or surveyor to assess the floor and determine whether or not it needs strengthening. They can then complete the necessary paperwork that Building Control will require before the work can be started.

Does your loft have sufficient ventilation?
Here are the rules regarding room ventilation:
– Purge
You should install windows that can be opened to let out bathroom steam.

– Whole Building
Also known as trickle ventilation, a bathroom requires 4000mm squared in order to be deemed sufficiently ventilated. This can be incorporated into the head of the window frame.

– Extractor Fans
If there is no window that can be opened in your new bathroom, you must install a mechanical extractor fan in order to reduce condensation. In terms of performance, bathrooms require 15 l/s (litres per second) with a 15 minute overrun (after the light is turned off). If you are only installing a toilet, it will require an extractor fan with a performance of 6 l/s (litres per second) with overrun.

The above regulations apply to bathroom installations in England. For more information on other parts of the UK, you should contact your Local Planning Authority.

With over 40 years of experience within the loft conversion industry, Econoloft is the best in the business. We can transform your loft into a brand new bathroom to suit all of your needs. We know that there’s no such thing as a typical loft conversion, which is why we tailor all of our work to meet our client specifications.

For more information about how we can convert your loft into a bathroom, or to book your FREE estimate, contact Econoloft today on FREEPHONE 0800269765 or fill in a call back form and we will contact you when it’s convenient.