Replacing old windows and doors can be complex, particularly in heritage-listed buildings that require maintaining period features. Additionally, body corporate or council permissions may be needed to ensure that new double glazed windows and double glazed doors match existing designs. Although these energy efficient windows and doors are rarely refused, the approval process can be lengthy and arduous. For those seeking a simpler solution, installing secondary windows is a viable option.

Energy efficiency consultants and acoustic engineers frequently refer clients to us for secondary glazing because it provides superior insulation against heat, cold, wind, water, and noise. Secondary double glazing offers the benefits of triple glazing with a wider air gap, ensuring luxury and comfort.

Secondary glazing requires a minimum 50mm gap from the existing windows to the wall or a windowsill with at least 50mm of wall space. If unsure, you can send us photos or arrange a free consultation with our surveyor.

Installation Process: Our installers retain the existing windows when installing secondary double glazed windows and doors, avoiding the need for removal.

Tools Required:

• Gloves, Goggles

• Tape Measure, Spirit Level, Pencil

• Electric Screwdriver, Hand Drill with 3, 3.5, or 4mm drill bits

• Screws (various sizes)

• Saw (to cut an aluminum angle)

• Expanding Foam

• Window Packers (1, 3, 7, 12mm)

Fitting Secondary Double Glazed Windows and Doors: The fitting process involves leveling the window horizontally with packers and then securing it with screws. Proper leveling is essential to prevent tilting. Screws should be initially tightened lightly and fully secured after all screwing points are attached.

Sealing Secondary Double Glazed Windows and Doors: Sealing the new windows requires skill due to limited access. A corner nozzle for sealant ensures complete weather sealing. Thoroughly clean the area before applying expandable foam and silicon for optimal insulation and a neat finish. Use waterproof silicon outside and, if desired, paintable silicon inside.

Glazing of Secondary Double Glazed Windows and Doors: Glazing involves handling heavy double glazed units, requiring safety precautions and additional tools like glass suction cups and rubber hammers. Proper positioning and centering of the glass within the frame are essential for a stylish and modern appearance.

Final Step: Fit handles and hinge covers where appropriate, and test the window to ensure smooth operation and airtight sealing. Any gaps or crookedness indicate improper installation, which should be adjusted for user comfort and preference.