How Much Does Double Glazing Cost for Two Large Windows in the UK?

Determining the cost of installing double glazing for two large windows in the UK can be complex, as several factors come into play. While a quick Google search might yield a figure of ￡680522.59, which is incorrect and highly exaggerated, it is important to consider a range of variables.

Factors Affecting the Cost of Double Glazing

The total price of installing double glazing for two large windows can vary significantly based on several factors:

Size of the Windows

A simple rule of thumb is that the larger the window, the more expensive the installation. In the UK, a large window is generally defined as one that is 1.8 meters or larger in width or height. Your specific measurements are crucial in determining the cost. For instance, if you have two windows measuring 1.2 meters by 3.5 meters each, this would be considered quite large.

Material of the Frame

The choice of window frame material can greatly influence the cost.

uPVC (Unplasticized Polyvinyl Chloride): This is the most common and cost-effective option. It is durable, energy-efficient, and comes in a variety of finishes. Aluminum: Known for its durability and low maintenance, but it can be more expensive due to heavier installation requirements. Wood: For a traditional look, wood is a great option, but it typically has a higher cost and requires more maintenance.

Custom vs. Standard Size

Custom-made windows can be significantly more expensive than standard sizes due to the additional design and manufacturing requirements.

Standard Size: If your windows are standard off-the-shelf sizes, the cost will be lower. Custom Size: If your windows are not standard, the cost will be higher.

Access Issues

If access to the installation site is challenging, such as needing a crane, this can add to the cost. Other access-related factors include the availability of parking and proximity to the worksite.

Compliance with Regulations

Installing double glazing in certain areas or complying with specific regulations, such as conservation areas or listed buildings, can also significantly increase the cost. Compliance might require certain finishes or materials to be used, as well as the presence of a licensed installer.

Previous Installation Example

A few years ago, we had a window of roughly 1.2 meters by 3.5 meters installed. It was a custom-sized window of the highest specification, and an exterior finish was used to comply with ‘conservation area’ type rules. As a result, the cost was roughly twice that of a bog-standard white uPVC off-the-shelf unit of the same size. Factors that contributed to this higher cost included:

Custom size Top-end materials and installation Detailed compliance with conservation area regulations

Step-by-Step Guide to Estimating the Cost of Double Glazing

Measure the Windows: Accurately measure the dimensions of the windows you wish to replace. Decide on Frame Material: Decide whether you prefer uPVC, aluminum, or wood. Consider Custom or Standard Sizes: If your windows are standard, you may save money. If they are custom, you will have a higher cost. Determine Access Requirements: Check for any access issues such as the need for a crane. Research Local Regulations: Ensure you understand any local regulations that may affect the installation, such as conservation area requirements.

Expected Costs Ranges

Based on your measurements and considerations, here are some cost ranges for double glazing:

uPVC: ￡200 to ￡500 per square meter, depending on the specifications and fitment. Aluminum: ￡300 to ￡600 per square meter, due to higher material and installation costs. Wood: ￡400 to ￡1000 per square meter, including the cost of fitting and compliance.

Remember, these are average costs and can vary. Always seek quotes from multiple installers and compare them to get the best deal.

Conclusion

The cost of installing double glazing for two large windows in the UK depends on several factors. By understanding these factors and planning accordingly, you can make an informed decision and find the best value for your installation needs.