One rooflight or a pair?
A single rooflight can define a dining area or kitchen island. Two can help distribute daylight across a longer room, subject to the roof structure and the space available.
Windows, doors & extensions across Essex · Brightlingsea showroom
Spectrum Glazing · Essex
Give your kitchen, extension or orangery a brighter outlook. Discover flat glass rooflights in Essex, with a clean, understated profile and advice from our local team.
Korniche & Ultrasky · Supplied and installed

A different way to open up a room
A flat rooflight introduces daylight from above without the raised, pitched shape of a roof lantern. It is a natural fit for a contemporary flat-roof extension, bringing a view of the sky into kitchens, dining spaces and living areas.
Whether you are planning a new room or improving an existing roof, Spectrum Glazing can help you compare the options. We work with homeowners in Brightlingsea, Colchester, Clacton-on-Sea and across Essex.
Tell us about your space ↗
Find the right rooflight
Compare the design, glazing and installation requirements of Korniche and Ultrasky. We’ll help you select a suitable specification for your roof and the room below.
| Range | What to explore | Discover more |
|---|---|---|
| Korniche flat rooflights | A contemporary flat-glass design. Explore the appearance, available sizes and glazing specification for your extension or renovation. | Explore Korniche ↗ |
| Ultrasky flat skylights | A streamlined overhead glazing option. Discuss the roof opening, internal finish and how the skylight can complement your space. | Explore Ultrasky ↗ |
Sizes, glass options, colours and installation details vary by system. Your quotation will confirm the product specification and included work.
Inspiration from above
Browse interior views, exterior details and flat rooflight designs. Select a photograph to see it full size. Range imagery illustrates design possibilities; the final specification is agreed for your project.
Designed around your space
Position, size and glass specification all matter. Start with how you want to use your room, then work towards a rooflight that complements it.
Discuss my project ↗A single rooflight can define a dining area or kitchen island. Two can help distribute daylight across a longer room, subject to the roof structure and the space available.
Discuss solar-control options, thermal performance and the roof’s orientation. The right balance depends on the amount of glazing, ventilation and how the space is used.
The opening, support, upstand and roof covering need to work together. A flat rooflight still needs the installation fall specified by its manufacturer to help water drain.

Rooflight or roof lantern?
A flat rooflight offers a quieter roofline and a simple glazed opening. A roof lantern creates a raised architectural feature with pitched glass and a more pronounced internal shape.
Both bring daylight from above. Compare them alongside your ceiling height, roof design and the view you want from the room.
Explore our roof lanterns ↗From first ideas to finishing details
01 / YOUR PLANS
Share your postcode, project stage and approximate dimensions if you have them. We can discuss early ideas as well as ready-to-build plans.
02 / YOUR OPTIONS
Compare the rooflight ranges and glass options. We’ll explain the proposed product and what is included in your quotation.
03 / YOUR INSTALLATION
Measurements, roof suitability, access and installation arrangements are checked before work begins.
Useful answers
The price depends on the system, size, glass specification and installation work. Roof alterations, access and internal finishing can also affect the cost. Send your project details for a quotation with a clear scope of work.
It may be possible, subject to an assessment of the roof’s structure, condition and layout. The opening, support, upstand and weatherproofing must be suitable for the chosen rooflight.
The name describes its low-profile appearance. Installation needs to follow the manufacturer’s requirements, including the specified fall for drainage. We’ll confirm the requirements for the system you choose.
Comfort depends on the roof’s orientation, glass specification, glazed area, shading and ventilation. Ask us about suitable solar-control options and how the rooflight fits into the wider room design.
A pair can work well over separate areas of a larger extension. The spacing and opening sizes need to be considered with the roof structure. Select “2 rooflights” in the enquiry form and tell us what you are planning.
Follow the glass and frame manufacturer’s care instructions and plan safe access. Ask about the glass options available, but remember that any specialist coating still needs appropriate care. Never stand on roof glazing unless the exact product is specified for that use.
Guarantee terms depend on the rooflight, glass and installation. We’ll confirm the applicable cover, exclusions and care requirements with your quotation and order information.
Let’s brighten your plans
Tell us where your project is, what you have in mind and whether you would like one rooflight or two. Approximate sizes are helpful, but you do not need them to get started.
Need advice first? Choose “Help me choose” and our team will talk through the options with you.
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Compare styles, colours and finishing ideas in our inspiration gallery, then explore the ranges that suit your home.
Browse Rooflights & roof windows inspiration images →