Misted, cloudy, foggy or steamy glass with condensation inside the double glazed unit will affect the efficiency of your property. You will lose up to 20% heat from your home!
Double glazing windows usually have an inert gas such as argon or krypton which is hermetically sealed in to regulate the temperature between the panes. It plays a vital role in making your home energy efficient and with the extra Low-E coating to help keep heat in, it will meet the minimum energy performance rating on an EPC. A breach of the seal can cause the glass to lose its insulating properties and let moisture creep into the space between the glazing to form condensation.