Windows Plus Online

Building

Regulations

Building Regulations

There are different types of regulations. These are government regulations within the UK. These are under the guidance of part regulations:

Windows Plus Online has reviewed the building regulations, and simplified the regulations. If you require more technical information please contact Windows Plus Online or revert to the government guidelines.

Windows Plus Online has decided to index the building regulations in the most likely order of relevance of your project, and not alphabetically.


FENSA

Windows Plus Online is a bespoke manufacturing website. A FENSA certificate cannot be issued if the supply only service is used. All recommended fitting services will be part of the FENSA certification with a valid registration number, and insurance backed warrantee in place for more information regards to FENSA certification please visit www.fensa.co.uk

If you have any question in regards to FENSA please contact Windows Plus Online for more guidance.


Part N: Safety Glazing (Superseded by part K)

Windows Plus Online uses part N as the example for part K, as it is more relevant to windows and doors.

Toughened or laminated glazing is required in critical locations which are subject to accidental human impact. As a minimum:

  • Glazing at low levels, the level of the glazing is within 800mm of the floor level to the glass line.
  • Glazing in doors that starts lower then 1500mm from the floor level to the glass line.
  • Glazing adjacent to door: window/side panels starting within 300mm of the edge of the door frame and also starting within 1500mm from the floor level, please see our simple diagram below. If you have any question please contact us.

The diagram shows the glass panes where toughened or laminated safety glass is required is highlighted in orange.

For more information visit the government website here or please contact the Windows Plus Online technical department, technical@windowsplusonline.co.uk for more guidance, or telephone 02476 100750.


Part F: Ventilation

All rooms must be adequately ventilated to avoid the accumulation of contaminants and / or condensation, purge ventilation (direct fan) is required in rooms prone to water vapour such as bathrooms and kitchen. Water vapour can also be caused with item such as fish tanks. If the original windows have trickle vents, any replacement windows are also required to have trickle vents.

For more information visit the government website here or please contact the Windows Plus Online technical department, technical@windowsplusonline.co.uk for more guidance, or telephone 02476 100750.


Part B: Fire Safety

Fire escape windows must be provided with an unobstructed area of at least 0.33mm2 with minimum dimension of 450mm in height or width, and should not be above 1100mm from the floor. This is applicable to all second floor habitual rooms, not bathrooms, and lower floor if no direct means of escape in two directions, and garage extensions. This is clearly shown to be achieved on Windows Plus Online website via an F highlighted in the glazing area. In some cases, this is not achievable and a-like-for-like design will be acceptable. In this instance Windows Plus Online advises to take photos of the items being removed, in case an independant inspector requests evidence you have not made the design worse when replacing.

For more information visit the government website here or please contact the Windows Plus Online technical department, technical@windowsplusonline.co.uk for more guidance, or telephone 02476 100750.


Part M: Ease of Access of Disabled Visitors

Accessibility is at the forefront of building regulations and are relative to the accessibility not only for disabled people, those with limited mobility and wheel chair users, but are also very useful for people that regularly use prams and other wheeled devices. There are three main areas to consider:

  • M4(1) Category 1 – Visitable dwellings (the mandatory regulatory minimum requirements for all new dwellings) – considered to be met when any new dwelling makes reasonable provision for most people, including wheelchair users, to enter the building and enter and rooms and sanitary facilities on the entrance floor.
  • M4(2) Category 2 – Accessible and adaptable dwellings (optional requirement depending on planning policy / developer choice) - considered to be met when a new dwelling meets reasonable provision for most people to access it, PLUS incorporates features making it suitable for a wide range of people, including older people, individuals with reduced mobility and some wheelchair users.
  • M4(3) Category 3 – Wheelchair user dwelling (optional requirement depending on planning / developer discretion) - met when the dwelling makes reasonable provision for wheelchair users to live in the dwelling and make use of any parking facilities and outdoor or communal spaces.

For all new build developments, achieving Category 1 standards is mandatory, whereas, as stated above, the requirement to meet Category 2 and 3 will differ depending on the planning policies in the area you’re building in. The local planning authority will determine the standard of accessibility required as part of the planning permission.

For more information visit the government website here or please contact the Windows Plus Online technical department, technical@windowsplusonline.co.uk for more guidance, or telephone 02476 100750.


Part A: Structure

What this means is that when replacing windows and doors the item in not load bearing. In the 1930s - 1960s, wooden/steel windows and doors were built-in and used to build above. Now your products are changing, a modern window is not classed as a structural element, and it is the responsibility of the installer to make sure that all structural elements are taken into account.

Signs of movement are broken glass in the original windows and/or doors, cracks in the original frame, and movement in the brickwork in a pyramid form above or below the window and/or doors. Sometimes you are unable to determine if the original building has been built correctly as the building was constructed, great care is required when taking the windows and/or doors out.

Load bearing bays; a stone bay is generally load bearing by nature of the stone structure which means the windows are not load bearing. If the bay window is not a stone bay and has a roof which is not part of the main house, or an Apex roof, this is a clear sign the windows are load bearing. If the bay window goes across multiple floors with a barrel section in-between then this a clear indication the window sections will be load bearing. Windows Plus Online supply load bearing poles with all of the bay purchases and bay jacks as an additional option which can be fitted to comply with document A.

For more information visit the government website here or please contact the Windows Plus Online technical department, technical@windowsplusonline.co.uk for more guidance, or telephone 02476 100750.


Part I: Conservation of fuel power

Conservation and fuel power is a compulsory area. All windows and door that are replaced in habitable area are required to have a rating of 1.6 U value or lower. A simple system to calculate these are the WERS rating, or more commonly known as energy efficiently rating BFRC. Like you see on your washing machine, Windows Plus Online offers B rated windows, but the more commonly produced windows produced are A rated windows. There is a section to be able to order none rated windows but these are for out buildings only with no heating, i.e a shed, windows plus online is able to offer A++ windows but these are not common as the temperatures with in the UK very rarely required require such a high specification and there are certain parameters that change the style / specification of the windows. You will also need to contact us to obtain a quote.

Extensions: it is recommended that the maximum are of glazing relative to a build is 25% or lower. If the glazing area is less than 25% then the standard rules apply. If the area is higher than 25% then there will be information on the architects drawing to comply by.

What is exempt from part I?

Some sorts of building are exempt from building regulations. These are listed buildings and those within conservation areas. Were these buildings to be modified, they would lose some of their character. With that said, these sorts of buildings can often be fitted with newer, energy efficient doors and windows without compromising their aesthetics.

Another important category of allowed developments are conservatories and porches, provided that the development in question doesn’t have a heating system and is less than 30m2.

For more information visit the government website here or please contact the Windows Plus Online technical department, technical@windowsplusonline.co.uk for more guidance, or telephone 02476 100750.

Building regulations below are more relevant to new build housing

Part Q: Security of New Build Residence

Part Q is only relevant to new build properties. Its aim is to prevent people breaking into others homes through lower level doors and windows. In regards to flats any part which there is access to the flats.

This is mainly the ground floor windows and other easily accessible windows, door sets should be of a PAS 24 standard.

In simplicity, the windows and doors will require laminated glass in all sections. Windows Plus Online would also recommend a composite door.

Another important category of allowed developments are conservatories and porches, provided that the development in question doesn’t have a heating system and is less than 30m2.

For more information visit the government website here or please contact the Windows Plus Online technical department, technical@windowsplusonline.co.uk for more guidance, or telephone 02476 100750.