Windows, including replacement windows, in both commercial and domestic buildings come within the scope of the Building Regulations. If you are installing windows will have to comply with strict thermal performance standards.

To ensure compliance, we recommend using an experienced professional who can offer up-to-date advice on each individual situation.

APPROVED DOCUMENT B

FIRE SAFETY

In first floor habitable rooms, for example bedrooms, windows must be wide enough to provide a means of escape. See also fire escape windows.
In some situations, there may be a requirement for fire resisting windows.

APPROVED DOCUMENT E

RESISTANCE TO PASSAGE OF SOUND

Removing a ventilator in the head of a window and changing the glass spec will significantly improve acoustic performance. Generally, an acoustic engineer report would be required to ensure complete compliance.

APPROVED DOCUMENT F

VENTILATION

Background ventilation in windows (headline ventilators) is one of four systems which can be used to comply. Let us know if ventilators are required or not.

APPROVED DOCUMENT K

PROTECTION FROM FALLING COLLISION AND IMPACT

Windows should not open onto walkways in or around buildings and containment is required using guarding/glazing in some situations, particularly where the window sill is below 800mm from floor level.

Glass must be toughened or laminated in certain locations and if it does break then it must do so without causing injury. Reversible windows must also be fitted with restrictors. Please let us know if you require restrictors.

APPROVED DOCUMENT L

CONSERVATION OF ENERGY FUEL AND POWER

Windows need to provide minimal heat loss ensuring lower energy use thereby reducing CO2 emissions. A U Value is a measurement of heat loss and it is this, along with the way windows are fitted, that will ensure compliance. Alternatively, windows are now also given energy ratings from A++ to F in a similar way to your fridge or freezer, where A++ rated products give better thermal performance than those rated F. Building Regulations now require replacement windows to be C or better.

APPROVED DOCUMENT Q (NEW DWELLINGS AND MATERIAL CHANGE OF USE)

SECURITY

Approved Document Q details the requirements for security for either new dwellings or those with material change of use. The regulation applies to windows and doorsets that provide an easily accessible entrance to the dwelling. Easily accessible is defined further within in the Approved Document.

The Approved Document sets out reasonable standards for doors and windows to resist physical attack by a casual or opportunist burglar by being both sufficiently robust and fitted with appropriate hardware.

For all projects submitted to planning from 1st October 2015, any window or doorset in scope of Approved Document Q needs to meet the requirements of PAS 24:2014.
 
Please note, Building Regulations are subject to local interpretation by the Building Control Officer and you should always check you meet the requirements of your local authority.

You can find your Local Authority by entering your postcode at www.labc.uk.com