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Meet Our Manufacturers

At Roof Window Outlet we work with the very best names in the business. This means we can ensure we only ever sell products we believe in. We’re all about helping our customers find the right roof windows for their project and our comprehensive collection has something for every buyer – no matter what they’re looking for.

Every single product we sell has been expertly designed, manufactured and tested by the teams behind the biggest brands in the glazing game. So, we thought it was high time we celebrated our partners and shared with our customers exactly what makes them so fantastic.


Based in Staffordshire, Keylite is one of Europe’s fastest growing roof window manufacturers and prides itself on delivering exceptional glazing with unique innovations. With a product to suit all types of buildings, Keylite has won countless accolades, including Best Roofing Brand at the Builders’ Merchant Journal Awards in both 2018 and 2019.

As well as offering exceptional value for money, Keylite’s innovative range is bursting with incredible performance extras. The team invests in extensive research and development, in order to continue to push the boundaries of technology. Its inventions include Warm Edge glazing, which provides added protection against condensation, and its ingenious Flick-Fit brackets, which enable installation straight from the box in less than two minutes.

Explore Keylite’s inspiring product range


Even if you’ve never sourced windows before, it’s likely you’ve heard of Velux. This now iconic brand is one of the biggest and most respected in the world – and for very good reason. Velux has been producing world-renowned glazing products for over seven decades, consistently paving the way for innovation and quality.

From super sound insulation roof windows that are ideal for those living in noise polluted areas, to its burglary resistant options that feature toughened glass and a reinforced frame, Velux has a product to suit all needs. Plus, you can also opt for smart windows, which can be worked with the touch of a button. What could be better than that?

Take a look at the full Velux range here


Fakro has been making world-leading windows since 1991 and is celebrated for the quality and brilliance of its products. Yet people love Fakro’s affordability, too. With this brand, you can gain windows with cutting-edge technology for a surprisingly low sum. From energy-efficient glazing to ‘topSafe’, Fakro’s reinforced structural glass that protects against break-ins, this is a trailblazing company.

Dedicated to development, Fakro has its own research department where over 100 experts invent and examine new products. The company’s incredible designs have been recognition with various important industry accolades, as well as the Polish Economic Award that was granted to them by the President of Poland.

Discover the full collection from Fakro now


Since 1958 Mardome has been producing exceptional glazing products. Looking to meet the needs of every customer, the company offers a comprehensive range of roof windows in every imaginable size. Mardome’s windows have excellent thermal performance, too. In fact, they surpass all regulatory thermal requirements for glazing.

All of its products feature a dual-sided polycarbonate pane, which stops UV rays from entering the home. As for durability, the brand’s windows are made from Marlon FSX Longlife polycarbonate, a material that’s 200 times stronger than double glazing. All of its creations even comply with UK fire regulations! For these reasons, and dozens more, Mardome’s products are perfect for both commercial buildings and large-scale residential use.

If you’re sold, take a look at all of Mardome’s products

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