Glass vs Polycarbonate Conservatory Roof

How the two glazed roof options actually differ in use, and when neither is the right answer.

If your conservatory is uncomfortable, the roof is almost always the reason. Choosing the replacement means understanding what each material does to heat, noise and light.

This guide compares glass and polycarbonate honestly, then explains the third option most homeowners end up choosing.

Polycarbonate

Its strengths and weaknesses are both well known:

Modern glass

Today's conservatory glass is a different product from the glass of twenty years ago:

When a solid roof beats both

If you want the conservatory to behave like a room all year, an insulated solid roof — often with rooflights to keep the light — outperforms any glazed option thermally. It costs more and takes more light, and for many homeowners it's still the right call.

Get your conservatory roof assessed

We'll check the existing frame and base first, then quote the options that your structure can actually carry.

Frequently asked questions

Can I replace polycarbonate with glass on the existing frame?

Sometimes, but the frame must be able to carry the extra weight. That's a structural check we make on survey, not an assumption.

Will glass stop the conservatory overheating?

Solar-control glass reduces heat gain substantially but does not eliminate it. Ventilation and blinds still matter.

Is a solid roof classed as an extension?

Replacing a conservatory roof with a solid one can bring building control into scope. We'll set out the position for your project before you commit.

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