If your conservatory turns icy at the first frost, you’re not alone. The combination of high glazing and older roof materials means heat escapes fast, draughts creep in, and the space becomes expensive to heat. This guide walks you through 9 proven fixes — from 30-minute wins to one-day professional upgrades — so you can enjoy a truly year-round room.
Quick Wins (Low Cost, High Impact)
1) Track down draughts and seal them
Perished door seals, gaskets, or tiny roof-joint gaps can undo any heating you add. Replace tired seals and use quality draught excluders. It’s a weekend job that pays off all winter.
2) Smarter heat zoning
Add a programmable thermostat/valve so you only heat the conservatory when you use it. Aim for short, targeted heating cycles rather than running the main system constantly.
3) Thermal blinds or curtains
Well-fitted, insulated blinds add a warm air buffer against cold glazing, reducing radiant heat loss and night-time chill.
4) Layer soft furnishings
Rugs and fabric absorb cold from hard floors and dampen echo. Combine with a draft stop at the threshold for a noticeable comfort lift.
Medium Steps (Bigger Comfort Gains)
5) Upgrade glazing selectively
If you still have single or older double glazing in doors or vulnerable panes, a targeted swap can help keep interior surfaces warmer, which also suppresses condensation risk.
6) Add a dedicated, efficient heat source
Modern electric radiators or split heat pumps can provide fast, controllable warmth for occasional use, ideal for hobby time or evening dining.
High-Impact Roof Upgrades (Year-Round Results)
7) The CHRIS® Insulation System (one-day transformation)
Purpose-designed for conservatories, CHRIS® is the only system independently tested at Salford University’s Energy House 2.0. Testing showed up to an 82% improvement in roof U-values and up to a 32% reduction in heat transfer, meaning the space holds heat better and warms faster, with installation typically completed in one day. It’s the fastest route to turning a cold conservatory into a cosy, usable room across winter.
Why it works: Raising internal surface temperatures reduces radiant chill; better U-values slow heat escape; and a warmer fabric helps stabilise temperatures between day and night.
8) ThermaTile® solid tiled replacement roof
Prefer a full roof change? A solid, insulated tiled roof dramatically improves thermal comfort and reduces rain noise while giving your conservatory a “proper room” look.
9) SkyTherm® orangery-style roof with lanterns
If you love natural light, a high-performance roof with a glass lantern balances brightness with thermal control for dining, offices, or family rooms, especially when paired with internal insulation.
Choosing Your Best Path
Fastest comfort boost: CHRIS® (one-day install, keeps the look you love inside).
Full aesthetic change: ThermaTile® (solid roof, quieter, new look).
Light lovers: SkyTherm® (orangery feel + year-round comfort).
Reclaim Your Conservatory with CI Group
At CI Group, we’ve helped over 30,000 homeowners turn their conservatories back into the light, comfortable rooms they always imagined. With over 4,300 5-star reviews, and the only insulation system independently tested at Salford University, we deliver proven solutions that work.
Whether you want to insulate internally with the CHRIS® system, create a modern look with ThermaTile®, or flood your room with light using SkyTherm®, we can help you transform your conservatory into a space you’ll love, all year-round.
Ready to warm up your conservatory?
Get a free quote via our form on the button in the top right of the page or call 0800 180 4000. Our expert teams operate nationwide anywhere on the UK Mainland.
