Conservatory guides
Why is my conservatory too hot in summer?
It's almost always the roof. A fully glazed or polycarbonate roof acts like a greenhouse in direct sun, and no amount of blinds or fans fully solves that on their own.
The main cause
A glass or polycarbonate roof lets solar heat straight through, and with nowhere for that heat to escape, the room quickly climbs well above outside temperature on a sunny day. Older single-glazed or thin polycarbonate roofs are the worst offenders.
What actually fixes it
Replacing the roof with an insulated tiled or panel system, or a high-performance solar-control glazed roof, is the single biggest improvement you can make — see our guide on insulated conservatory roofs. Ventilation upgrades, solar control film and external blinds can help at the margins, but they're managing the symptom rather than fixing the cause.
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Frequently asked questions
FAQs.
Will blinds alone fix a hot conservatory?
They help reduce direct glare and some heat gain, but they don't address the underlying issue of heat building up under a fully glazed roof. A roof upgrade makes the biggest difference.
Is a roof replacement a big project?
It's usually one of the quicker conservatory transformation options, often completed in 1-2 weeks for a straightforward roof-only replacement.