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Double Glazed Leaded Windows

May 14 2024

Leaded windows have long been revered for their timeless elegance and intricate craftsmanship. Leaded windows, with their historic charm and artisanal craftsmanship, have been a staple in architectural design.

Double-glazed leaded windows combine the classic and decorative features of leaded glass with the modern benefits of double glazing. Let’s break down the key components and characteristics:

In double-glazed leaded windows, the aesthetic charm of leaded glass is preserved while reaping the benefits of improved energy efficiency and insulation provided by double-glazing.

Double-glazed windows offer a multitude of benefits, including enhanced insulation that minimizes heat transfer, ensuring a consistent and comfortable indoor temperature throughout the year. This results in increased energy efficiency, reducing the need for heating in winter and cooling in summer.

The sealed space between the glass layers also mitigates condensation, making them particularly suitable for spaces with high humidity, such as bathrooms and kitchens. Additionally, double glazing provides sound insulation, effectively reducing external noise and creating a quieter, more peaceful indoor environment.

Double-glazed windows
Source: Deacon & Sandys

Average Cost of double-Glazed Leaded Windows

Window Type

Approximate Price Range (₹)

Double Glazing Windows

₹500 per sq ft

Double Glazed Windows and Doors

₹299 per sq ft

Sliding Window Glass Types

₹299 per sq ft

UPVC Windows With Grill

₹299 per sq ft

Double Glazed Steel Window

₹3,500 – ₹9,500

UPVC Windows (Fixed)

₹200 – ₹550 per sq m

UPVC Windows (Casements)

₹250 – ₹700 per sq m

Additionally, energy-rated double-glazed windows are noted for potential long-term savings on energy costs and may increase home value by up to 10%.

Replacement Procedure of double-Glazed Leaded Windows

1. Assessment and Measurements

Begin with a comprehensive assessment of the existing leaded windows. Measure dimensions accurately to ensure the replacement units fit seamlessly.


Assessment and Measurements
Source: Leadbitter glass

2. Choosing Replacement Windows

Select the desired double-glazed leaded window style and design. Consider energy efficiency, aesthetic preferences, and any customization options.

3. Removal of Existing Windows

Carefully remove the old leaded windows, taking precautions to prevent damage to the surrounding structure or interior.


Removal of Existing Windows
Source: Fine homebuilding

4. Preparation of Window Opening

Inspect and prepare the window opening, addressing any issues such as decayed wood or damage that may affect the installation.

5. Installation of Double-Glazed Leaded Windows

Install the new double-glazed leaded windows, ensuring a proper fit and alignment. Use appropriate sealing materials to create an airtight and weather-resistant seal.

6. Secure Fixing and Insulation

Securely fix the windows in place and ensure proper insulation to maximize energy efficiency. This step is crucial for preventing heat transfer and reducing condensation.

7. Finishing Touches

Add any necessary finishing touches, such as trim or sealant, to enhance the aesthetic appeal and weather resistance of the replacement windows.

8. Clean-Up

Thoroughly clean the installation site, removing debris and ensuring that the area is left in a neat and orderly condition.

9. Quality Inspection

Conduct a quality inspection to verify that the replacement windows meet installation standards, including proper sealing, alignment, and functionality.


In conclusion, double-glazed leaded windows represent more than just a design choice; they summarise a timeless elegance that withstands the test of time. Consider the practical advantages and aesthetic appeal as you embark on the journey of enhancing your home with these classic yet modern windows.

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