Dealing With Condensation

Condensation is one of the most common problems homeowners face and it’s not caused by the windows, glass or glazing


We’ve produced a useful booklet called Condensation – Some Causes, Some Advice in which we explain the problem and suggest solutions for your home.

What is condensation?

Condensation is defined as the physical process by which a gas or vapour changes into a liquid. If the temperature of an object (e.g. grass, metal, glass) falls below what is known as the ‘dew point’ temperature for a given relative humidity of the surrounding air, water vapour from the atmosphere condenses into water droplets on its surface.

The dew point varies according to the amount of water in the atmosphere and the ambient air temperature.

Why is there condensation on my windows?

With regard to windows and doors, it is the difference in temperature between the internal and external environments that causes condensation to form on surfaces such as glass.

Read more about condensation

What is condensation and why does it occur on windows?

Learn about condensation, why it occurs and which of its causes you can control to reduce the likelihood of it happening in your home. Read more…

Where condensation forms and how to reduce it

Condensation can form on different parts of a window unit – find out how to reduce its occurrence based on where it appears in your home. Read more…

How double or triple glazing helps reduce window condensation

Double or triple glazing can greatly reduce the occurrence of condensation in a home. Find out how, and why heating and ventilation are key factors. Read more…

Window condensation – where the water vapour comes from

Recognising and controlling the sources of water vapour inside a home can help to reduce the likelihood of condensation forming on windows and doors. Read more…

Top tips on reducing condensation room by room

Helpful advice for how you can reduce condensation by ventilating excess moisture – without making draughts or causing rooms to become cold. Read more…

Download the free booklet

Condensation – Some Causes, Some Advice is our helpful guide to troubleshooting condensation in your home.