A Guide To VELUX Flat Roof Windows

Perfect for areas of the home with no traditional windows, VELUX flat roof windows are an ideal way to open up large rooms in your home to create a light, bright and spacious environment.

The VELUX glass rooflight range brings in more daylight than ever before and delivers minimalist and elegant glass-to-edge design; both from outside on the roof and from inside the home – so you see nothing but glass and sky.

There are several key things to consider when picking the right VELUX flat roof window for your home and in this guide, we discuss the factors that may impact your decision. We will also take you through the range of different VELUX flat roof windows that are available and highlight their benefits and key features.

Kitchen

Key Considerations When Choosing A VELUX Flat Roof Window

Rooflight position & sizing

Natural light is hugely important, which makes it a crucial consideration in our homes. While too little light can make a room seem small, plenty of light makes a home feel more spacious, more welcoming and more comfortable. By installing the right number, type and size of windows you can get the daylight in your new space just right and properly realise the potential in your home.

Living spaces that are used for everyday activities, such as the kitchen or living room, benefit from extra daylight. Other rooms, such as hallways, also benefit from flat roof windows but do not require the same size or number as you won't be performing light-sensitive tasks. Using VELUX flat roof windows can increase usable space by providing natural light and ventilation to dark corners or poorly lit rooms while creating inviting and comfortable spaces.

For optimal comfort, it is recommended that the glazed areas represent 20% of the overall floor space in your room. You can learn more about optimal daylight using the VELUX daylight calculator to ensure your rooms have adequate levels of daylight.

Do I need planning permission?

Permitted development rules in England and Wales typically allow the installation of rooflights or skylights without any additional permissions. This is, however, only applicable if you stay within their rules which are as follows:

  • Must not project more than 150 millimetres from the plane of the existing roof slope.
  • Must not exceed the height of the existing roof.
  • Side-facing windows must be obscure-glazed; and, if opening, to be 1.7 metres above the floor of the room in which they are installed.

You can find more information regarding planning permissions and permitted planning here.

What style of rooflight do I want?

VELUX flat roof windows are available in a discreet flat glass profile, or a sleek, modern curved glass rooflight option. You can also choose a VELUX flat roof dome, with an insulated PVC construction that is incredibly low maintenance, or a flat roof kerb that allows for the installation of a VELUX roof window onto a flat roof between the pitches of 0-15°. We discuss the key features of each roof window in more detail below.

How do I want my flat roof window to operate?

Along with the above design choices, you can also choose between a fixed unit or an electrically operated vented base unit. If you don’t want extra ventilation then the fixed base unit with a high insulated PVC sash construction and a two-layer energy pane is ideal for just bringing in daylight. For better indoor comfort and fresh air at the touch of a button, we would recommend the electrically-vented base unit with VELUX INTEGRA® that also features a practical pre-installed rain sensor.

Types of VELUX Flat Roof Windows

Here at Roofgiant, we offer a brilliant selection of VELUX flat roof windows. VELUX rooflights offer a wide range of benefits including increased daylight, excellent energy efficiency and extra ventilation.

VELUX Curved Glass Rooflights

VELUX Curved Glass Rooflights

VELUX curved glass rooflights have a unique curved glass surface that lets in more daylight and stands out externally as a modern addition to roof surfaces. An ideal option for design-conscious homeowners, the curve-shaped edge-to-edge glass allows rainwater to easily drain off while the insulating PVC frame and a two-layer low-energy pane provide optimal energy efficiency.

  • Suitable for roof pitches between 0° - 15°
  • Maximum daylight area
  • Curved glass top
  • Glass-to-edge inside view
  • Rainwater easily drains off
  • Insulating PVC frame
  • Two-layer low-energy pane
  • Optimal energy efficiency
  • Discreet heat protection awning blind
  • Available with electric or fixed options

VELUX Flat Glass Rooflights

VELUX Flat Glass Rooflights

VELUX flat glass rooflights are a stylish yet discreet feature on any roof with a 2-15° pitch. The scratch-free 4mm tempered glass outer pane is durable and has a special coating for easy cleaning. This flat glass rooflight provides excellent noise reduction from rain, hail and other exterior disturbances.

  • Suitable for roof pitches between 2° - 15°
  • Maximum daylight area
  • Flat glass top
  • Glass-to-edge inside view
  • Scratch-free 4mm tempered glass outer pane
  • Excellent durability
  • Noise reduction from rain, hail and other exterior disturbances
  • Insulating PVC frame
  • Two-layer low-energy pane
  • Optimal energy efficiency
  • Available with electric or fixed options

VELUX Roof Dome Windows

VELUX Roof Dome Windows

VELUX flat roof dome windows are the modern version of the roof window bubble, perfect for offices, clinics, workshops and homes. The window consists of a high insulation PVC construction and two-layer low-energy pane. The simple dome design is low maintenance and the opaque dome option provides optimal privacy.

  • Suitable for roof pitches between 0° - 15°
  • Good daylight area
  • Good energy performance
  • Classic design
  • Good sound reduction
  • Polycarbonate dome in clear or opaque
  • Opaque dome option provides optimal privacy
  • Low maintenance design
  • Insulating PVC frame
  • Two-layer low-energy pane
  • Perfect for offices, clinics, workshops and homes
  • Available with electric or fixed options

VELUX Flat Roof Kerbs

Providing all the benefits of a VELUX window, this insulated timber kerb allows a standard VELUX window to be installed on a flat roof. The insulated wooden kerb has been manufactured from plywood and insulated using polystyrene.

  • Suitable for roof pitches between 0° - 15°
  • The kerb is angled at 19°
  • Allows the option to install a VELUX roof window onto a flat roof
  • Allows rainwater to drain away
  • Allows an easy, convenient installation as required flashing parts are included

Flat Roof Blinds

VELUX flat roof blinds are essential for any flat roof window and are easy to control using the VELUX ACTIVE system powered by either mains electricity or solar power. VELUX awning blinds offer a transparent option to moderate the temperature, while light dimming blinds have a blackout effect and are perfect for bedrooms.

  • Transparent awning blind
  • Provide up to 77% heat protection
  • Dims daylight and prevents direct glare
  • Increases privacy
  • Solar-powered
  • Operated with a pre-paired VELUX remote
  • Fitted between the roof window and the top cover
  • Easy to install from the inside
Room with Velux windows