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Discover a wide selection of high-quality rooflights for flat roofs on Addlite’s product category page. Our extensive range includes leading brands like Coxdome, Stargaze, Lumiglaze, and Addlite, offering various fixed, manual, and electric operations to suit your requirements. We stock both polycarbonate and glass rooflights in different sizes, ensuring you find the perfect fit for your project. Plus, enjoy free delivery on all our products for added convenience. Shop now and transform your space with Addlite.
That dark landing. The gloomy bathroom. The kitchen extension that feels like a bunker even at midday. You’re living with spaces that drain your energy every time you walk through them.
You’ve considered options – maybe a window, perhaps moving house entirely. But structural walls, planning restrictions, and eye-watering costs keep shutting down every solution. Meanwhile, you’re burning electricity from dawn till dusk just to see properly.
Rooflights transform problem spaces without the drama. From budget-friendly polycarbonate models (£125.74) to premium Stargaze glass options with electric operation (£645.28), we’ve got solutions for every roof, room, and budget.
Fixed, manual, or electric. Glass or polycarbonate. Builders curb or timber upstand. Whatever your flat roof needs, we stock it – with free UK delivery on everything.
Beyond our standard range, the rooflight market offers impressive variety for those seeking something special.
The installation of roof windows is subject to building regulations but often does not require planning permission. Permitted development allows the installation of rooflights without requiring planning permission in most instances – making them the fastest route to brighter spaces. Our fixed and ventilating models comply with these regulations, keeping your project simple.
Many companies offer bespoke rooflight solutions to meet unique requirements, and we work with the best. Sunsquare offers bespoke sizing and shape options for all skylight models – perfect when standard dimensions just won’t work. Need it fast? The Skylight Company provides bespoke rooflights with a quick turnaround, often within 10 working days.
Bespoke rooflights enhance the architectural appeal of buildings with sleek designs that standard models can’t match. Whether you’re dealing with unusual angles, specific size requirements, or need to match existing glazing, custom solutions deliver. Manufacturers like Sunsquare provide tailored advice for bespoke rooflight projects, ensuring your vision becomes a reality.
From our ready-to-ship Coxdome range to fully customised architectural statements, the key is matching the rooflight to your specific needs. Standard models suit 90% of installations, but when your project demands something extraordinary, bespoke options ensure you’re not compromising on design or performance.
When you’re investing in natural light solutions, the details matter. Our extensive range isn’t just about variety – it’s about finding the exact match for your project. Here’s what sets our rooflights apart from the crowd.
Whether you need flat roof windows for a modern extension or pitched roof windows for a traditional home, we’ve got you covered. Our inventory spans:
Fixed rooflights for maximum light, minimum fuss (from £125.74)
Manual ventilation options that balance airflow with affordability
Electric operation for ultimate convenience – perfect for hard-to-reach installations
Walk on rooflights for roof terraces where you need both access and illumination
Each product comes in multiple variants, so you’re not forced into a one-size-fits-all solution.
The eternal debate: polycarbonate or glass? We stock both because different spaces demand different solutions.
Polycarbonate skylights offer incredible value and durability. They’re virtually unbreakable, weigh less (easier DIY installation), and our triple-skin options deliver exceptional thermal efficiency. Ideal for garages, workshops, and commercial spaces where function trumps form.
Flat glass rooflights bring that premium feel. Our Stargaze range combines contemporary aesthetics with serious performance – double-glazed units that won’t compromise your energy efficiency. The clarity is unmatched, and self-cleaning coatings mean they stay that way.
Every rooflight in our range prioritises thermal efficiency without sacrificing light transmission. The numbers speak for themselves:
U-values as low as 0.8 W/m²K
Light transmission up to 85%
Air permeability that exceeds building regs
But it’s not just about stats. These skylight windows include thoughtful touches like integrated blinds options, rain sensors on electric models, and smooth operating mechanisms that won’t jam after a few months.
Sure, roof lights brighten spaces. But ours do more. Ventilating models tackle condensation in bathrooms and kitchens. Our Coxdome access hatches double as smoke vents for building regs compliance. The fixed skylights with acoustic glazing cut external noise by up to 35dB – perfect for urban locations.
From standard builders curb mounting to bespoke timber upstands, we accommodate every installation scenario. Unlike generic roof lantern alternatives, these rooflights maintain a low profile that won’t dominate your roofline or upset the neighbours.
You want to bring light into your home without breaking the bank or your back. Here’s why rooflights beat every other option on the market.
Installing a new rooflight takes hours, not weeks. No structural engineers, no steel beams, no months of dust and disruption. Our expert team regularly hears from customers who avoided extensions altogether once they saw what a well-placed flat rooflight could achieve.
The maths is simple:
Extension: £15,000-£40,000 plus planning permission hassles
Contemporary rooflight: £300-£700 installed, usually no permission needed
Result: Same flood of daylight, fraction of the cost
Cookie-cutter solutions don’t work when every property is different. That’s why we offer:
Custom sizes for awkward spaces
Bespoke rooflights for unique architectural requirements
Walk-on options for roof terraces handling foot traffic
Opening rooflights for ventilation where you need it most
Our services extend beyond just selling products. Ring for expert advice on which solution suits your specific situation. We’ll help you navigate building regs, calculate the right size, and even recommend trusted installers.
Beyond the obvious “more light = better mood” equation, modern rooflights deliver unexpected perks:
Passive cooling: Strategic placement creates convection currents that naturally cool spaces without fans. Opening models amplify this effect.
Privacy protection: Unlike windows, rooflights maintain complete privacy whilst flooding rooms with light. Perfect for overlooked properties.
Secure by design: No accessible entry point for intruders. Our toughened glass and polycarbonate options exceed security standards, giving clients peace of mind.
Winter heat gain: South-facing installations capture free solar heat, reducing heating bills. The thermal mass of your room stores this warmth for evening release.
Whether you’re a confident DIYer with all the tools or prefer professional installation, we’ve got your back. Our bespoke solution service includes:
Technical drawings for builders
Installation guides that actually make sense
Phone support when you hit a snag
Fast UK delivery so projects don’t stall
The sleek, contemporary designs work with any architectural style. From period properties needing sympathetic additions to ultra-modern builds demanding cutting-edge aesthetics, there’s a suitable option in our range.
Quality rooflights last 20+ years with minimal maintenance. But longevity isn’t just about durability – it’s about choosing designs that won’t date. Our contemporary rooflights avoid gimmicky features in favour of timeless simplicity.
Contact our team to discuss options. With decades of experience across thousands of installations, we know what works, what lasts, and what adds genuine value to your property.
Extension Owners: Got a flat-roofed extension that feels more like a cave? You’re our typical customer. Flat roof skylights transform these problem spaces into the bright, usable rooms you originally envisioned.
Loft Converters: That newly converted loft bedroom or office needs proper illumination. Dormer windows are expensive and complex – rooflights deliver better results for a fraction of the cost.
Dark-Room Dwellers: Suffering with windowless bathrooms, gloomy hallways, or north-facing kitchens? Even small rooflights make dramatic differences in these forgotten spaces.
Eco-Conscious Homeowners: If you’re tired of burning electricity all day just to see properly, rooflights offer sustainable solutions. Natural light = lower bills and reduced carbon footprint.
Property Developers: Adding value without major construction? Smart move. Rooflights cost hundreds but add thousands to property values. Buyers love bright spaces.
Home Workers: Poor lighting kills productivity. Your home office needs quality daylight to keep you sharp, reduce eye strain, and maintain your sanity during long work days.
Anyone with a flat roof who wants more light without the planning permission battles, structural work, or eye-watering costs of traditional extensions. Sometimes the simplest solutions are the best.
Getting your rooflight installation right means the difference between years of natural light and endless callbacks. Here’s what you need to know before breaking out the tools.
Rooflights may require planning permission under the UK Building Regulations, though most fall under permitted development. The key rules: no adjustments can be any higher than the highest point of the roof or roof ridge for roof windows, and side-facing windows for roof windows must have obscure glazing. It is important to obtain permission prior to ordering your new rooflight if required – nothing worse than a £500 rooflight you can’t legally install.
There are four main types of pitched roof windows available: electric, manual, fixed, and solar. Each suits different situations:
Electric roof windows can be opened remotely and will close automatically if it detects rain – brilliant for out-of-reach installations or British weather unpredictability.
Manual roof windows are best suited for easily accessible areas and are budget-friendly, perfect for that garage conversion where you’re watching the pennies. Solar roof windows are an eco-conscious option powered by solar energy, with no associated electricity cost – ideal for off-grid buildings or reducing running costs.
Flat roof windows allow ventilation and natural light to flow throughout your property, but positioning matters. Install opening rooflights on the leeward side to avoid rain driving in. Create cross-ventilation by pairing with existing windows or doors – the stack effect naturally draws stale air up and out.
The U-value of a roof window or skylight indicates its thermal efficiency. The lower the U-value, the easier it is for the product to transfer heat to a colder room. The U-values of some rooflights can be as low as 0.5 W/m²K, ensuring excellent thermal efficiency. Always check your chosen model meets current building regs (maximum 1.6 W/m²K) and consider going lower for better long-term energy savings.
Remember that skylights provide panoramic views of the sky, connecting the indoors to nature. Position them where you’ll appreciate this most – above dining tables, in bedrooms for stargazing, or in meditation spaces. Avoid placing directly above TVs or computer screens where glare becomes an issue.
While our rooflights come with comprehensive instructions, consider your comfort level with heights, cutting into roofs, and ensuring weatherproof seals. Professional installers handle the building regs compliance, guarantee their work, and often complete installation in half the time. For bespoke solutions or complex installations, their expertise prevents expensive mistakes.
Our rooflights start at £125.74 for basic polycarbonate fixed models and go up to £686.37 for premium electric glass options with timber upstands. Most customers spend £300-£500 for quality units that’ll last decades. Installation adds £200-£400, depending on complexity.
Rooflights must not project more than 150mm from the existing roof plane or be higher than the roof ridge. They should face away from highways if possible. Building regs require minimum U-values of 1.6 W/m²K. Always use toughened safety glass or polycarbonate, especially for low-level installations.
None – they’re the same thing. “Rooflight” is the UK term; “skylight” is more American. Some people use “skylight” for pitched roofs and “rooflight” for flat roofs, but technically, they’re interchangeable. We use both terms so customers find what they’re searching for.
Usually not. Rooflights are permitted development unless your property is listed, in a conservation area, or the rooflight exceeds size limits. The same rules apply as above – under 150mm projection, not higher than the ridge. When in doubt, check with your local planning office.
For highlighting external roof lines, use LED strip lights or compact spotlights with IP65 weatherproof ratings. For internal rooflines, recessed downlights work brilliantly. But if you meant “rooflights” – choose based on your roof type: flat roofs suit our Stargaze range, pitched roofs need specific flashings.
Our team is always here to help. Whether you have questions about our products or would like to request a quote, we’re happy to assist you in any way we can.
Our team is always here to help. Whether you have questions about our products or would like to request a quote, we’re happy to assist you in any way we can.
