Flat Glass Roof Lights (Flat Roof Skylights) are a sleek, contemporary solution to bring daylight into flat roof spaces. These units are essentially flat (or low-pitch) glazed panels set into a frame on a flat roof, providing a minimalist “window to the sky” without the protrusion of a lantern. BM Bifolding Doors offers high-quality aluminium flat rooflights that give a flush external appearance of a seamless glass pane while internally presenting a neat framed opening for maximum light. Ideal for modern extensions, or any flat roof area like kitchens, hallways, or garages that could benefit from natural light, our Flat Glass Roof Lights are thermally efficient, weather-tight, and secure. They can be fixed (non-opening) or specified with an opening mechanism if ventilation is required (manual or electric). With options like walk-on glass for terrace applications or multi-pane configurations for larger areas, these rooflights are incredibly versatile. They offer a frameless look from outside – often the glass extends edge-to-edge with only a subtle perimeter frame, making them almost invisible on the roof while flooding the interior with light.

• Sleek, Low-Profile Design: From the outside, flat roof lights sit nearly flush with the roof surface – typically a slim aluminium frame capped by glass with no bulky upstand visible. The glass often overhangs the frame slightly, giving a floating sheet of glass effect. This means when viewed from above (or an upper window), it’s all glass – very clean and modern. Internally, the frame is slim and flush into the ceiling, providing a simple window-like opening that doesn’t intrude into headspace. In short, you get daylight without a visible structure – perfect for achieving that minimalist architectural look.

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• High Thermal Performance: Our flat glass rooflights are fully thermally broken and glazed with high-spec units, achieving excellent U-values around 1.0–1.3 W/m²K for the whole unit (depending on size and glazing). Many include insulated upstand frames or multi-chamber designs to ensure minimal heat loss. They also use low-E coatings and argon gas in the double glazing. The result is a roof window that meets or exceeds building regs for thermal efficiency, so you won’t turn your new extension into an energy sieve. Additionally, options like triple glazing can push performance even further if needed.

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• Secure and Tested: Despite being a big piece of glass in your roof, these flat skylights are very secure. The glass is always laminated on the inner pane for safety (meaning if it ever breaks, it stays in place like a car windshield), and toughened on the outer for impact resistance. The frames lock the glass in place from inside, making it practically impossible to remove without specialised tools. Many units are rated to resist forced entry and even have PAS 24 variants or at least meet similar criteria (some models have been tested to burglary resistance, given the interest in such for accessible flat roofs). So you can feel safe that opportunists can’t simply break in through the rooflight – it’s as secure as a standard window if not more so.

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• Watertight and Maintenance-Free: Our flat rooflights are designed with clever drainage and sealing. They typically have a slight built-in upstand or can be installed on a builder’s upstand with at least a 5° fall to shed water. The glass is bonded and sealed to the frame with industrial silicones, and perimeter gaskets ensure no leaks. In essence, they are tested to withstand heavy rain and wind without water ingress. Because they sit relatively flat, the glass is usually treated with a self-clean coating to help reduce dirt buildup (though being flat, some cleaning will eventually be needed). The aluminium frame is powder-coated and will not rust or need repainting. There are no moving parts in a fixed skylight, so it’s truly maintenance-free (opening versions have reliable actuators with long lifespans).

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• Customisable & Discreet: Flat rooflights can be made in various shapes and sizes – the most common is rectangular or square, but we can do circular porthole-style, multi-section units, or even continuous runs of flat glazing. They can be walk-on rated for outdoor terraces (using thick laminated glass) if you want a skylight in a foot-traffic roof that doubles as a floor window below. If ventilation is required, we can integrate a hinged or sliding opener that doesn’t disrupt the flat aesthetic much – these can be electrically operated with remote or rain sensors, giving you fresh air on demand. Also, the internal frame can be powder-coated any RAL colour to match your ceiling decor (though white is typical so it blends with the ceiling), and external frame usually is black or grey which you barely see under the edge of glass. In summary, you can tailor these rooflights to your needs without losing their core discreet look.

Flat rooflights have become very popular in single-story extensions and new builds, and as a trade installer or builder, partnering with us means you get a top-notch product that’s straightforward to install and delight your clients. We provide the rooflight either ready to drop onto a prepared curb upstand, or with an integrated insulated upstand if ordered that way (some products have a pre-made upstand). Typically, installation is just bedding it on sealant and mechanically fixing the frame down – very quick compared to building a full lantern. If the rooflight is large, we coordinate with you on site to ensure enough manpower or lifting equipment is available; the units come with protective packaging and sometimes suction lifting handles for the glass. We provide any necessary wiring for opening models pre-fitted – so your electrician just needs to connect to mains or controller. Many of our units like the Korniche flat light or similar are delivered as one piece – no assembly required on site, which saves time and potential errors. As a trade partner, you can count on our rooflights being thoroughly tested in factory for sealing; it’s rare to have any issues if the site install is done per instructions. We also offer support on flashing details – while a roofer usually handles flashing the curb, we can advise how our frame interfaces with typical roof membranes (usually very easily, often sits on top of finished roof with butyl tape or sealant). The versatility (fixed or opening, etc.) means you can cater to client desires for fresh air or fire ventilation if needed. Turnaround is typically good, these are simpler than lanterns so often faster to manufacture. On site, you’ll appreciate the simplicity – no fiddling with beads or separate glass units; most come as a sealed unit with frame and glass bonded, you place it and secure it, done. This also means fewer call-backs (no leaks because no assembly needed beyond sealing perimeter). And design-wise, flat lights are easier to accommodate in drawings since they require only slight pitch and minimal roof buildup. For remodeling or retrofits, you can cut a hole in an existing flat roof and drop one in with relative ease. We supply full documentation – the installation manual, weights, any structural supports needed (though usually just a timber curb does fine). All in all, working with us on flat rooflights is a hassle-free experience – you get a high-quality, impressive product that’s quick to install, leaving you with a satisfied end-user and a beautiful end result in minimal time.

A flat glass rooflight can dramatically change a room – imagine a formerly dark middle-of-the-house kitchen now having a clear opening to the sky, bringing in sunshine or seeing the clouds drift by as you cook. Homeowners often choose flat rooflights when a lantern might look too bulky or they want a more modern aesthetic. The benefit is you still get heaps of light, but with a very clean ceiling line (some people prefer not to have the pyramid shape of a lantern intruding). In terms of light, a well-placed rooflight can actually bring in more balanced light than vertical windows, because it captures sunlight throughout the day (including high noon when the sun is overhead). You might find you use less electric lighting during daytime. At night, star- and moon-light through a rooflight can add a special ambiance as well. Practically, our flat lights are built to the same standards as windows – double glazing, insulated frames – so you shouldn’t worry about them causing heat loss or condensation issues. They won’t make your room too hot either if you choose the correct glass: we often include a slight solar-control layer which cuts about 60% of solar gain while still giving you clear glass (or a slight blue tint if you prefer that style). If you want the ability to vent out heat or steam (say in a kitchen or bathroom with a rooflight), an opening version with a chain actuator is fantastic – you hit a switch or remote and it tilts up slightly, letting warm air escape (since hot air rises, it’s very effective for cooling). Many people worry about cleaning: since it’s flat, debris can settle. However, we mitigate that with the self-clean coating; plus our rooflights are usually installed with a minimal slope (5 degrees or so) which helps water run off taking dirt with it. In practice, most owners find they only need to hose it off or clean it properly once or twice a year at most. If accessible from an upstairs window or balcony, that’s easy; if not, a long-handled brush or professional window cleaner can reach it just like cleaning gutters or solar panels. Business owners (like those designing an office or retail space) might use flat lights to brighten an interior or showcase area while maintaining a flat roof for signage or other installations – these skylights are quite unobtrusive and can even be walked on if ordered as such, which is useful for rooftop patios or commercial scenarios. Another hidden advantage: because they’re flat, they don’t catch the eye from ground level outside – preserving exterior building lines (some homeowners’ associations prefer them to lanterns for that reason). In summary, as an owner, you’ll enjoy the sleek look, the flood of natural light, and you won’t have to worry about drafts, leaks, or big maintenance tasks. It’s a set-and-forget upgrade that can make an astonishing difference to the feel of your space below, all while being energy-efficient and secure.