Small extensions are one of the most common home improvement projects in England. A single-storey rear extension, a narrow kitchen addition, or a converted terrace outbuilding - these spaces are everywhere, and they all share the same challenge: getting enough natural light into a room that sits at the back of the house, away from the front windows, often hemmed in by neighbouring walls or fences.
A 1000x1000 rooflight - that is, a one metre by one metre skylight fitted into the flat roof is one of the most practical and cost-effective solutions to that problem.
Before we get into what it does to a small room, the first question most homeowners ask is straightforward: what is the 1000x1000 rooflight price?
What Does a 1000x1000 Rooflight Cost?
Pricing for a 1m x 1m flat glass rooflight in the UK varies depending on the glazing specification, frame finish, and whether the unit is fixed or opening. As a general guide:
|
Rooflight Type |
Approximate Price Range |
Best For |
|
Fixed, double glazed, white frame |
£300 – £500 |
Budget-conscious buyers, utility rooms |
|
Fixed, double glazed, anthracite grey frame |
£350 – £550 |
Modern kitchen extensions, open-plan rooms |
|
Fixed, triple glazed, anthracite grey frame |
£500 – £750 |
Living spaces, bedrooms above, high thermal performance |
|
Opening (electric or manual), double glazed |
£600 – £950 |
Kitchens, bathrooms, rooms needing ventilation |
|
Self-cleaning glass upgrade |
Add £50 – £100 |
Any rooflight in a hard-to-reach position |
These figures reflect the cost of the rooflight unit itself. Installation costs vary by region and complexity, but for a straightforward flat roof fitting with a sound existing kerb, most homeowners in England should budget an additional £200 to £400 for labour.
It is worth noting that buying direct from a specialist supplier rather than through a builder or general merchant often represents better value. You get a product specified correctly for your application without the middleman margin.
Fixed vs Opening: Which Is Right for a Small Extension?
This is the first real decision to make once you have settled on size. Both options have genuine merit depending on what the room is used for.
A fixed rooflight is the simpler and more affordable choice. There are no moving parts, no motors, and no maintenance beyond occasional cleaning.
An opening rooflight makes sense when the room below has limited air circulation. Kitchens are the obvious case - cooking generates heat, steam, and odour, and a rooflight that opens directly above the cooking area provides excellent natural extraction.
Browse our fixed rooflights if ventilation is not a priority, or explore opening options if your kitchen or utility room needs it.
Frame Colour and How It Affects the Look of the Room
White frames suit lighter, more traditional interiors and blend into a white or pale ceiling effectively. Anthracite grey frames - the most popular choice in modern UK extensions create a deliberate contrast against a white ceiling and tie in naturally with dark kitchen cabinetry, steel appliances, or concrete finishes. You can read more about why this shade has remained so dominant in our guide to the anthracite grey roof lantern and how RAL 7016 works across different home styles.
The frame finish on a quality aluminium rooflight is powder-coated and UV-stable, so you are not choosing between colours that age differently — both will hold their finish for the life of the product.
Buying a 1000x1000 Rooflight: What to Check Before You Order?
Before placing an order, there are a few practical things worth confirming.
The kerb height matters. Most flat glass rooflights are designed to sit on an upstand kerb of a specific height - typically 150mm. If you are retrofitting into an existing flat roof, check whether a kerb already exists and what condition it is in. If you are fitting into a new extension, the builder will need to construct the kerb to the correct specification before the rooflight arrives.
Delivery lead times for standard sizes are typically short - many suppliers hold 1m x 1m units in stock for next-day or 48-hour despatch. Custom sizes take longer, but for a 1000x1000mm unit you are unlikely to face any meaningful delay.
If you are replacing an old polycarbonate dome of a similar size, our guide on retrofit flat glass skylights covers everything you need to know about the changeover process and what to expect.
Finally, check the warranty. A quality flat glass rooflight should come with a minimum ten-year product guarantee. Anything significantly shorter than that is worth questioning.
Frequently Asked Questions:
