Double glazed units are a popular choice for homeowners due to their energy efficiency and insulation properties. However, to ensure they continue to perform optimally and last for years, it’s essential to provide proper maintenance and care.

Maintenance double glazed units

Some essential maintenance and care tips for double glazed units

Regular Cleaning

One of the simplest yet most crucial maintenance tasks for double glazed units is regular cleaning.

Dust, dirt, and grime can accumulate on the glass surfaces, diminishing their effectiveness. Follow these steps for a thorough cleaning:

  • Start by removing loose dirt and debris with a soft brush or a lint-free cloth.
  • Use a mixture of mild dish soap and water to clean the glass. Avoid using abrasive cleaners or harsh chemicals, as they can damage the seals and frames.
  • Rinse the glass with clean water and use a squeegee or a microfiber cloth to remove any streaks.

Check and Maintain Seals:

The seals around the edges of your double glazed units are vital for maintaining insulation, inspect them regularly for signs of wear or damage.

If you notice any gaps, cracks, or deterioration, it’s essential to address them promptly. You can use silicone sealant to repair minor issues, but for significant problems, it’s best to consult a professional.

Lubricate Hardware

If your double glazed units have moving parts like hinges or locks, lubricate them periodically, this prevents friction, rust, and ensures smooth operation.

Use a silicone-based lubricant as it won’t damage the hardware or the surrounding seals.


Proper ventilation is crucial for preventing condensation and maintaining the integrity of your double glazed units.

Ensure that your home is adequately ventilated, especially in high humidity areas like bathrooms and kitchens. Use exhaust fans and open windows when necessary to reduce moisture build-up.

Protect Frames and Surroundings

The frames and surroundings of your double glazed units also need attention, keep vegetation and debris away from the windows, as they can damage frames and seals.

Additionally, consider applying a protective coating to wooden frames to prevent moisture damage or rot.

Address Condensation

While double glazed units are effective at reducing condensation, it can still occur in certain conditions.

If you notice condensation between the glass panes, it’s a sign that the seal has failed, and the unit needs professional repair or replacement.

Avoid Impact and Pressure

Double glazed units are durable, but they can be damaged by impact or excessive pressure.

Be careful when moving furniture near windows, and avoid leaning heavy objects against them.

Professional Inspection

Finally, consider scheduling regular professional inspections.

Experts can identify potential issues that may not be apparent to the untrained eye and can recommend necessary repairs or replacements to keep your double glazed units in excellent condition.

By following these maintenance and care tips for your double glazed units, you can ensure they continue to provide energy efficiency, insulation, and longevity for your home.

Regular attention to these details will not only extend the life of your double glazed windows but also maintain a comfortable and efficient living environment.