Before delving into the specific costs of double glazing your three-bedroom home, it’s essential to understand the costs associated with double-glazed windows in general.
Window costs vary based on several factors, including the frame material, the type of glass and any additional features, such as coatings that improve energy efficiency.
- Material: Unplasticised polyvinyl chloride (uPVC), wood and aluminium are the most common materials, each with different price points and benefits.
- Glass type: Standard double glazing is the norm, but upgrades such as low-emission coatings or triple glazing can add to the cost. Fittings such as handles also affect prices.
- Size and style: Large windows or bespoke shapes and styles will increase prices.
- Installation: Labour costs can vary depending on the company and complexity of the installation.
The average cost of a standard uPVC double-glazed casement window ranges from £500 to £620. If you opt for wooden frames, the price can increase to between £1,500 and £1,850 per window, due to the material’s higher cost and the craftsmanship required.
Aluminium windows generally sit in the middle, offering a modern look with prices ranging from £1,000 to £1,250 per window.
It’s also possible to purchase cheaper budget windows or considerably more expensive high-end windows.
Something else to consider is how many windows you’re replacing. On average, a three-bedroom house has 8 to 10 windows.
Detached three-bedroom houses may have 12 or more sizable windows, depending on the size and style. Semi-detached or terraced three-bedroom homes likely have eight to nine windows or fewer.
You also need to consider the cost of installing windows.
Installation costs for double glazing vary widely depending on several factors, including the difficulty of the installation, the property’s location, the type of windows being installed and the company providing the installation services.
- Accessibility: Higher floors or hard-to-reach areas can require scaffolding or specialised equipment, increasing costs.
- Property age: Older properties might present unforeseen challenges, such as non-standard openings or the need for additional remedial work, which can extend the time and cost of installation.
- Window removal: The cost to remove existing windows can vary, especially if they are large, in a state of disrepair or contain hazardous materials, such as lead-based paints or asbestos.
- Location: Labour costs can be higher in certain parts of the country, particularly in London and southeast England.
Given these factors, the table below shows approximate costs for a standard three-bedroom house using uPVC, wood and aluminium frames for 8 to 10 windows.