Energy Efficient Skylight Installation in Cirencester

Cirencester’s homes lean heavily on handsome Cotswold stone — solid, characterful and, left as built, often hard to keep warm — alongside the newer developments at the edges of the town. The right skylight helps both: get the glass right and it warms a room while lowering bills; get it wrong and it leaks heat. As skylight specialists serving the Cotswolds, we fit energy-efficient units that keep heat in, glare out, and your energy use down.

What makes a skylight energy efficient

Several elements working together. An efficient skylight combines low-emissivity (low-E) glass that reflects heat back into the room, an argon gas fill between the panes, and a warm-edge spacer that cuts the cold bridge where condensation forms. With the right number of panes and a well-insulated upstand, it meets or beats current Part L U-values — rather than acting as the cold spot an old unit becomes.

Comfortable in summer, too

A south-facing room with the wrong glass overheats in summer, so we specify solar-control coatings that admit light while reflecting much of the sun’s heat back out. The room stays comfortable in July without the blinds permanently down, and you rely far less on cooling. We balance daylight, warmth and solar gain for each room’s aspect.

Double or triple glazing?

• High-performance double glazing — right for most rooms, with low-E coatings, argon fill and warm-edge spacers meeting Part L comfortably.
• Triple glazing — for the coldest, most exposed rooms or where you want the lowest U-values.
• Solar-control glass — for sun-facing rooms prone to overheating.
• Self-cleaning coatings — for out-of-reach units, keeping them clear and efficient.

The fit matters as much as the glass

Even the best glazing leaks heat through a poorly insulated upstand or a draughty flashing. Because installing skylights is all we do, we get the detail around the glass right — a true, well-insulated upstand and an airtight, weather-tight finish — so a high-performance unit on paper warms your room in practice. For Cirencester’s stone and conservation-area homes, we check conservation status and choose units in keeping. Every installation carries our written guarantee on our workmanship.

Upgrading an old skylight

If your skylight mists, draughts or has tired glazing, replacing it is one of the most effective energy upgrades you can make to a roof. We swap old, inefficient units — including yellowed plastic domes — for modern efficient glass, doing full replacements rather than patch repairs. See the wider area and our local work on our Cirencester skylight installation page.

Indicative cost

Cost depends on the unit, the glazing and access, so we give a fixed written quote after a survey. As an indicative 2026 guide for supplied-and-installed efficient units:

• Efficient double-glazed roof window: from approximately £1,100–£2,000
• Triple-glazed or solar-control upgrade: add approximately £200–£600
• Efficient flat rooflight or lantern: from approximately £1,500–£5,000+

These are indicative ranges only — your real price is a fixed written quote after a survey. Glazing upgrades, unit size, conservation requirements and access affect the figure, and we set it all out before any work starts.

Talk to us about your Cirencester home

Whether you are warming a Cotswold-stone home or specifying low bills into a new build, tell us about the room and we will arrange a survey, then send a clear, fixed written quote. The easiest next step is to get a quote.