What Ilkeston weather does to a conservatory
We ran Ilkeston's hourly weather for 2024 and 2025 through the same room three times, once per roof. The squares are hour by hour averages. The garden never beat 31.3°C and August averaged 17.4°C, but the polycarbonate room touched 47°C, against 35°C with panels.
A year inside a Ilkeston conservatory
Average room temperature, every month and hour of 2024 and 2025
- 1,294
- hours over 25°C
- 47°C
- hottest hour
- 33°C
- July, 3pm
- 1,431
- hours over 25°C
- 50°C
- hottest hour
- 34°C
- July, 3pm
- 313
- hours over 25°C
- 35°C
- hottest hour
- 25°C
- July, 3pm
Blue: heater weatherPale: comfortableAmber to plum: too warm
The hours you get back
A heater can rescue a chilly hour. Nothing cheap rescues a 31°C one. So the useful measure is how many waking hours stay at or under 25°C: in Ilkeston that is 3,819 a year under polycarbonate and 4,800 under an insulated panel roof, roughly 981 hours handed back.
The worst hours, above 30°C, fall from 528 to 25. A glass roof manages 675.
- Polycarbonate roof1,294 h too warm
- Glass roof1,431 h too warm
- Panel roof313 h too warm
Too cold (under 12°C)Chilly (12 to 17°C)Comfortable (17 to 25°C)Warm (25 to 28°C)Too hot (over 28°C)
When the heat peaks in Ilkeston
July is the problem month here: 44% of its waking hours top 28°C under polycarbonate, 7% under panels. Spring and early autumn matter too, when the sun is still strong but nobody expects to open the doors.
Polycarbonate roofInsulated panel roof
Winter in Ilkeston
Winter here bottoms out in January at an average of 3.6°C (coldest hour -5.3°C). Keeping 19°C while the room is in use costs about £455 a year in electricity under polycarbonate and £383 under the panel roof, 1,728 against 1,454 kWh.
We would not sell the roof on that difference alone. The glass walls keep losing heat either way; what changes most is that the room stops cooking in summer and a smaller heater copes in winter.
Prices for Ilkeston conservatory roofs
Prices in Ilkeston are the same as everywhere we work: the roof, not the postcode, sets them. The survey is free and the written price is fixed. See the price page for every shape, or get a guide price for your roof in about a minute.
| Shape | Small (up to 12 m²) | Medium (12 to 25 m²) | Large (over 25 m²) |
|---|---|---|---|
| Lean-to | from £3,000 | from £4,000 | from £5,000 |
| Edwardian | from £3,150 | from £4,200 | from £5,250 |
| Victorian | from £3,300 | from £4,400 | from £5,500 |
Fitting day
Plan on a single day for most Ilkeston roofs, usually a second for a P-shape. We take the old roof away the same day and leave the room swept. The fitting day walks through it hour by hour.
Towns near Ilkeston
Compare your neighbours, or see all of the East Midlands and the full overheating league table.