ROOF LIGHTS
Glass Roof Lights
Bring Natural Light Into Your Home
Dark rooms feel smaller than they are. A well-placed roof light changes that in a single day. At 4 Moon Windows, we design, supply, and fit flat glass roof lights that flood kitchens, extensions, and living spaces with natural daylight from above. Based in Croydon and working across South London and the wider capital, we are a trusted local team for every roof light London project. From a single fixed unit over a galley kitchen to a full set of roof lanterns in Croydon family homes, we handle everything from survey to sign-off. Every unit we fit is made to measure, double or triple glazed, and built to meet current Building Regulations. No off-the-shelf compromises. Just clean lines, slim frames, and light where you need it most.
More Natural Light
Overhead glazing lets in up to three times more daylight .
Double or Triple Glazing
High-performance glazing helps keep heat in.
Made to Measure
Every unit is manufactured to your exact opening size
Built for UK Weather
Thermally broken frames, safety glazing and weatherproof construction
roof lights
What Are Flat Glass Roof Lights?
flat rooflight or skylight
A flat glass roof light, often called a flat rooflight or skylight, is a fixed or opening glazed unit installed into a flat or low-pitched roof. It sits on an insulated upstand and offers a near-frameless view of the sky. Because overhead glazing lets in up to three times more daylight than a vertical window of the same size, a single roof light can transform how a room feels. It brightens deep floor plans, cuts your reliance on artificial lighting, and makes compact spaces feel open and airy. They are the go-to choice for kitchen extensions, rear extensions, loft conversions, garden rooms, and flat-roofed side returns across London.
Roof Light Homeowners Love
Prefer something with more presence? A roof lantern is a pitched, multi-panel glazed structure that rises above the roofline. It adds height, drama, and a full 360-degree spread of light. Our roof lanterns for Croydon and South London homes use slim, thermally broken aluminium frames in a wide choice of colours, including anthracite grey, matte black, and classic white. The result is a striking centrepiece that suits both modern extensions and period properties.Not sure whether a flat roof light or a lantern is right for your project? We will walk you through both options during your free consultation, with honest advice based on your room, roof structure, and budget.
Bespoke Roof Lights London – Made to Your Exact Size
No two roofs are the same, so we never force a standard size onto your project. Our bespoke roof lights London service means every unit is manufactured to your exact opening, whether that is a compact 600mm square or a statement structural glass span.Every option comes with choices for glass tint, solar control coatings, self-cleaning glass, and acoustic glazing. We help you specify the right combination for your room’s orientation and use.
WHY ROOF LIGHTS?
Built for Performance, Not Just Looks
A roof light has to work harder than any other window in your home. It faces direct sun, driving rain, and winter frost, all year round. That is why we only fit units engineered for the job.
South-facing roof? We recommend solar control glass to reduce glare and summer overheating, so your extension stays comfortable even in July. Self-cleaning coatings are also available, which is a practical upgrade for glazing you cannot easily reach.
Why Choose 4 Moon Windows for Roof Lights in Croydon?
There is no shortage of glazing companies in London. Here is why homeowners across Croydon, Thornton Heath, Bromley, Sutton, and the wider South London area choose us:
Get Your Free Roof Light Quote Today
Ready to bring more light into your home?
Whether you want sleek flat glass roof lights, elegant roof lanterns, or fully bespoke roof lights for a London renovation, our team is ready to help. Call 4 Moon Windows today or request your free, no-obligation quotation online.
FAQ
Frequently Asked Questions
Prices depend on size, glazing specification, and whether the unit is fixed or opening. As a guide, a made-to-measure fixed flat roof light typically starts from a few hundred pounds supplied, with installation priced separately. We provide a free written quotation after a quick survey, so you know the exact cost before any work begins.
In most cases, no. Roof lights and roof lanterns usually fall under permitted development, provided they do not project more than 150mm above the roof plane. Listed buildings and conservation areas are the main exceptions. We advise on this during your consultation and can guide you through any approvals needed.
A flat roof light is a single glazed unit that sits almost flush with the roof, giving a clean, minimal look. A roof lantern is a pitched, multi-panel structure that rises above the roofline, adding height and a more architectural feel. Flat roof lights suit modern, understated designs, while lanterns make a bolder statement.
Most single roof light installations are completed within one day, assuming the roof opening and upstand are ready. Larger lanterns or multiple units may take one to two days. Because every unit is made to measure, allow a manufacturing lead time between survey and installation, which we confirm when you order.
Absolutely. We regularly replace tired polycarbonate domes and older skylights with modern flat glass roof lights. Replacements must meet current thermal standards, and in most cases the new unit fits the existing opening with only minor adjustments to the upstand. The upgrade in light quality and insulation is immediate.