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How much to Double-Glaze a House?

Apr 11 2024

Double glazing involves two panes of glass separated by a thin layer of air or gas, effectively reducing heat transfer between the inside and outside of the building. This technology enhances energy efficiency, making the property more environmentally friendly and cost-effective.

The average cost of a double-glaze house in the UK:

Approximate Costs (UK)


Smaller Residence (4–6 windows)


Larger Building (20 windows)


Home with 8 windows and 2 uPVC doors


Home with 15 windows and 2 uPVC doors


4 Bedroom House


3 Bedroom House


Note: The cost ranges are approximate and may vary based on specific requirements, materials chosen, and other factors.

double-glaze house
Source: Eco quote Today

The cost of double glazing in the UK is influenced by several key factors

1. Size: Larger windows necessitate more materials and involve more complex installation processes, contributing to higher costs.

2. Style: The chosen style of double-glazed windows, whether it’s casement, sash, tilt and turn, or others, can affect the overall price.


double-glazed window styles

3. Material: The material used for the double-glazed windows plays a significant role in determining the cost. Different materials, such as uPVC, wood, or aluminium, come with varying price points.

4. Number of Windows: The total number of windows in the property directly impacts the overall cost. More windows mean increased material and labour expenses.

These factors collectively contribute to the variation in costs, and understanding their influence helps homeowners make informed decisions based on their preferences and budget considerations.

Tips to Maintain the Double-Glazing in your House

1. Regular Cleaning

Ensure that you clean the glass surfaces of your double-glazed windows regularly. Use a mild detergent or specialized glass cleaner along with a soft, non-abrasive cloth. This prevents the build-up of dirt and grime, maintaining clarity and maximizing the effectiveness of the glazing.

2. Inspect and Repair Seals

Periodically inspect the seals around your double-glazed windows. If you notice any gaps, cracks, or signs of wear, it’s crucial to address them promptly. Damaged seals compromise the insulation capacity of the windows, leading to potential energy loss and reduced efficiency.

3. Lubricate Moving Parts

For windows with moving parts, such as hinges and handles, apply a silicone-based lubricant to ensure smooth operation. This prevents stiffness, reduces friction, and extends the lifespan of the moving components. Regular lubrication also helps in avoiding unnecessary strain on the mechanisms.

4. Check for Condensation

Monitor the presence of condensation between the glass panes. If you observe fogging or moisture build-up, it may indicate a breach in the seal, compromising the insulating properties of the double glazing. In such cases, consult a professional for inspection and potential repairs.

5. Protect Against Harsh Weather

During extreme weather conditions, take precautions to protect your double-glazed windows. In harsh winters, use curtains or blinds at night to provide an additional layer of insulation. In hot summers, consider using reflective films or shades to minimize heat absorption. These measures can contribute to the longevity and efficiency of your double glazing.


In conclusion, the decision to double-glaze a house involves careful consideration of various factors, each contributing to the overall cost and efficiency of the installation. The average cost for double-glazing a house in the UK ranges from £1,500 to £12,000, reflecting the diverse needs and preferences of homeowners.

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