Your guide - building regs for windows

Whether your windows are fitted by a window fitter or by your builder or joiner, it's so important that you make sure that the building regulations (building regs) for windows are adhered too and you have the correct paperwork in place upon completion. We cover off what you need to look out for when having new windows fitted.

Do I need to comply with building regs for windows?

Yes, since the 1st of April 2002, the replacement of all glazing has come under the scope of building regs. Building regs ensure that your new windows must meet a minimum standard.

What do building regs check?

Building regs cover the following areas:

  • Thermal heat loss
  • Safety glazing
  • Ventilation
  • Fire Safety
  • Access to buildings

You will find more detail on the Planning Portal.

How do I get building regs approval for my new windows?

If your installer is registered under the competent person scheme then they will self certify their work complies with building regs instead of having to submit a building notice. In England and Wales, the FENSA registered scheme is the most common scheme.

If your fitter is not registered under the scheme then you must get building regs approval, either via your Local Authority or an approved inspector. The windows will be checked that they comply with the building regulations and a certificate of compliance will be issued. To find out more about the building regs process, read Your guide - Building Regulations.


So what is the FENSA registered scheme? 

In England and Wales, FENSA is the leading association where FENSA registered members are authorised under the Competent Person Scheme for the replacement of windows, doors, roof windows and roof lights against the relevant building regs.

Also look out for CERTASS which is a UK wide association where members are qualified to carry out the replacement of windows and doors in accordance with the relevant building regs.


What is the relevant document that I need once my windows have been fitted?

If you used an installer certified under a Competent Person Scheme, such as a FENSA registered fitter, then you will be issued with a certificate within around 4 weeks of the work being completed. If you have not received this then chase up with your fitter and/or the scheme. 

If building regs approval has been carried out with the local authority then you should be issued with a certificate of compliance.


What are the consequences if I don't comply with building regs for windows?

If building regs aren't followed, you may have to re-do the work or even pay a fine. Not having the correct paperwork when it comes to selling your home will cause complications too!

Published: November 9, 2018

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