VELUX Roof Windows-FAQ
Whether you're planning a loft conversion, replacing an ageing roof window, or simply looking to bring more natural light and fresh air into your home, VELUX roof windows are one of the most trusted and widely specified solutions in the industry.
All Roofbase branches stock a wide range of VELUX roof windows, and our knowledgeable team is on hand to help you choose the right product for your project.
Did you know?
Under similar conditions, roof windows are shown to provide at least twice as much light as vertical windows of the same size, and three times more light as dormers of the same size.
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A. A VELUX roof window is a professionally engineered window designed to be installed within a pitched roof, providing natural light and ventilation to rooms beneath. Unlike a skylight (which is fixed), a VELUX roof window can be opened, allowing fresh air in as well as light.
The VELUX brand was founded in Denmark in 1942 by engineer Villum Kann Rasmussen. The name combines 'VE' from the word ventilation and 'LUX', the Latin word for light.
A. Yes, all Roofbase branches stock a wide range of VELUX roof windows.
Whether you need a standard centre-pivot window for a loft bedroom, a top-hung window for easier access and ventilation, or a larger format window for a living space conversion, we carry products to suit a variety of applications and roof types.
A. VELUX produce several different window types to suit different roof pitches, room uses and personal preferences. The most common in the UK are:
Centre-pivot windows: The sash rotates on a central hinge, making them easy to open and clean from the inside.
Top-hung windows: The sash opens from the bottom, giving a clearer view and better ventilation, particularly popular in loft conversions used as living spaces.
Electrically operated windows: Operated by remote control or wall switch, ideal for hard-to-reach positions.
Solar-powered windows: Operate via a built-in solar panel, requiring no electrical wiring.
A. VELUX roof windows are manufactured in standard sizes, each identified by a specific size code. For example, MK04 (78cm x 98cm), is the most popular size in the UK.
Sizes range from compact options like CK01 (55cm x 70cm), suited to bathrooms and small rooms, up to larger formats such as UK10 (134cm x 160cm) for wide roof openings.
The size code is displayed on a data plate on the window frame, which is particularly useful when ordering a replacement. The Roofbase team can help you identify the right size for your project, whether it's a new installation or matching an existing opening.
A. Yes. Modern VELUX roof windows are designed with energy efficiency very much in mind. They feature double or triple glazing with low-emissivity coatings that help retain heat in winter and reduce solar gain in summer. And because roof windows are twice as effective as façade windows, they can reduce the need for artificial lighting by up to 20% in homes and 60% in office buildings, reducing your electricity consumption in the process.
A. VELUX roof windows are one of the most popular choices for loft conversions in the UK. They bring in significant amounts of natural light and ventilation, and are available in a range of sizes to suit standard UK rafter spacings.
They are also considerably simpler and less costly to install than dormer windows, making them a practical and attractive solution for most loft conversion projects.
A. Yes. In addition to the roof windows, Roofbase can order VELUX blinds and shutters to complement your installation. VELUX offer a wide range of interior blind options, including blackout blinds (ideal for bedrooms), roller blinds, pleated blinds and Venetian blinds. They are designed specifically for VELUX roof windows to ensure a precise fit and seamless operation.
A. Yes. Alongside the roof windows and blinds, Roofbase can also help you source VELUX accessories to order. This includes flashing kits (essential for weathertight installation into different roofing materials), insulation collars, lining kits, control rods for hard-to-reach windows, electric upgrade kits, solar-powered conversion kits, remote controls, and repair and maintenance products.
Having the right accessories specified from the outset can make installation smoother and ensure the long-term performance of your window.
A. Absolutely. Our staff are knowledgeable about the VELUX range and are well placed to help you work out the right product for your needs, whether that's choosing the correct size, window type, glazing specification, or identifying the right flashing kit for your roof covering.
We work with roofing contractors and builders every day and understand the practical realities of specifying and installing roof windows. If you are unsure where to start, just contact your local branch and we'll point you in the right direction.
A. Yes. Roofbase offers delivery to areas around each of our branches. We have nine branches across the South West of England, Wales and the Midlands, covering Bristol (Ashton Vale and Feeder Road), Cardiff, Exeter, Gloucester, Leicester, Plymouth, Swansea and Swindon.
Delivery coverage and arrangements may vary by location, so for specific details on what areas your nearest branch delivers to, please get in touch directly with your local branch and the team will be happy to help.
