Conservatory Condensation and Damp: Finding the Real Cause

How to tell condensation from a leak, and the fixes that address each.

Water appearing in a conservatory has three common sources: condensation, a failed seal, and a genuine leak. They look similar on a wet morning and need completely different work.

This guide walks through how we diagnose it, so you can describe the problem accurately and avoid paying for the wrong repair.

Telling the three apart

Start with where and when the water appears:

Why condensation happens here more than elsewhere

A conservatory has a large cold surface area and often poor air movement, especially if doors to the house stay shut and trickle vents are closed.

Add drying laundry, plants or an unvented space and moisture has nowhere to go. The glass is simply the coldest surface it can condense on.

What actually fixes it

In rough order of how often it works:

Get the cause diagnosed properly

We'll look at the roof, the seals and the ventilation before recommending anything.

Frequently asked questions

Is condensation a sign my conservatory is faulty?

Not by itself. Condensation is about surface temperature, ventilation and moisture in the air. Persistent damp staining at low level is a different matter and worth investigating.

Can you fix a leaking conservatory roof?

Yes — we survey the roof, identify the entry point and quote the repair, or the replacement if the structure is beyond sensible repair.

Would a solid roof help?

Usually yes, because the internal surface is warmer and no longer the coldest point in the room. It's not a substitute for ventilation, though.

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