In This Article
- How Much Does Creating a New Window Opening Cost?
- Average Costs by Window Type and Material
- Supply-Only Costs
- Additional Costs to Consider
- Factors Influencing New Window Opening Costs
- Types of Windows and Their Pros & Cons
- The Process of Installing a New Window Opening
- FAQs
Average Cost of Creating a New Window Opening
Creating a new window opening typically costs between £500 and £2,000, depending on the job’s complexity and location within the UK. The labour alone can take one to two days, especially if structural modifications are required. Below is a cost summary for creating a new window opening, based on material and window size:
| Window Size (mm) | uPVC | Aluminium | Timber | Composite |
|---|---|---|---|---|
| 600 x 900 | £250 - £400 | £500 - £700 | £850 - £1,000 | £1,300 - £1,800 |
| 900 x 1200 | £450 - £600 | £700 - £900 | £1,250 - £1,500 | £1,800 - £2,200 |
| 1200 x 1200 | £650 - £850 | £900 - £1,200 | £1,500 - £1,800 | £2,500 - £3,000 |
For a custom price on larger windows, or specific installation requirements, it’s often best to get a direct quote from local tradespeople.
Supply-Only Costs
If you choose to supply the window yourself, here’s what you can expect to pay on average in the UK:
- uPVC Tilt-and-Turn (1.2m x 1.2m): £250 - £350
- Aluminium Frame (1.2m x 1.2m): £500 - £700
- Timber Frame (1.2m x 1.2m): £700 - £900
- Composite Frame (1.2m x 1.2m): £1,000 - £1,300
Supply-only costs will vary based on window type, glazing, and whether you choose custom colours or woodgrain effects.
Additional Costs to Consider
When adding a new window opening, it’s worth noting other potential expenses:
- Scaffolding: For upper-level installations, scaffolding can add £200 - £500.
- Window Treatments: Blinds or curtains may cost an extra £50 - £200 per window.
- Painting or Staining: If installing timber windows, you may need to budget £150 - £300 for finishing.
- Structural Modifications: Installing large or custom-shaped windows may require additional structural support, potentially adding £300 - £1,000.
Factors Influencing New Window Opening Costs
Window Type and Style
The type of window chosen significantly affects cost. Here are the most common styles:
- Casement Windows: £250 - £800 per window. Good for energy efficiency but limited in terms of ventilation.
- Sash Windows: £400 - £1,200 per window. Great for traditional aesthetics but can be more costly.
- Bay or Bow Windows: £1,000 - £2,500 per window. Adds visual interest but requires more wall space.
- Tilt-and-Turn Windows: £300 - £900 per window. Offers excellent ventilation and cleaning access.
Frame Material
The material affects both the aesthetics and the longevity of your windows:
- uPVC: Affordable, energy-efficient, and requires minimal maintenance.
- Aluminium: Higher upfront cost but durable and modern.
- Timber: Premium look but requires regular maintenance to avoid rot.
- Composite: Combines timber and aluminium, offering durability with minimal upkeep, but often at the highest cost.
Glazing Options
Choosing between double or triple glazing impacts insulation and soundproofing but adds to the cost. Double glazing suits most UK homes, while triple glazing is beneficial in colder regions or for enhanced energy savings.
Planning and Building Regulations
In some cases, you may need planning permission or to meet building regulations, especially for period properties or listed buildings. Application fees vary by local council, often between £100 - £200.
Types of Windows and Their Pros & Cons
| Window Type | Pros | Cons |
|---|---|---|
| Casement | Easy to clean; energy-efficient | Limited ventilation options |
| Sash | Aesthetic appeal for older homes | Can be prone to draughts |
| Bay or Bow | Adds space and light | Expensive and requires structural work |
| Tilt-and-Turn | Great ventilation; easy to clean | Not suitable for every home style |
| Fixed | Modern look; affordable | No ventilation |
The Process of Installing a New Window Opening
The process of creating a new window opening involves several key steps:
- Choosing a Location: Avoid areas with water pipes or electrical wiring. Using a stud finder can help locate wall studs and suitable structural points.
- Creating a Frame: A wooden frame is built to support the window, often including headers for stability.
- Cutting the Opening: Using a reciprocating saw, the wall is carefully cut, making sure not to damage internal structures.
- Installing the Window: The window frame is secured in place, shims are used for alignment, and screws fix it to the surrounding structure.
- Weatherproofing and Finishing: Insulation and weather-stripping are applied to prevent draughts, and exterior siding or trim is added for a finished look.
FAQ's
Q: Can I create a new window opening myself?
A: While it’s possible for skilled DIY enthusiasts, installing a window in an external wall is complex and can lead to structural issues if not done correctly. Hiring a professional ensures safe installation and adherence to building regulations.
Q: Do I need planning permission?
A: Generally, new windows don’t require planning permission, but listed buildings or properties in conservation areas may have restrictions. It’s best to consult your local council.
Q: Is double glazing sufficient?
A: For most UK homes, double glazing offers excellent insulation and cost efficiency. Triple glazing is more common in areas needing superior soundproofing or insulation.
Q: How can I find reliable window installers?
A: Websites like Checkatrade, Rated People, and MyBuilder allow you to compare local tradespeople, view reviews, and get quotes.
Creating a new window opening can be a valuable investment, enhancing both the aesthetics and energy efficiency of your home. By carefully selecting materials and working with skilled professionals, you can ensure a successful installation that meets both your budget and design goals.
