Casement Window vs Fixed Window
Comparison Overview
When comparing Casement Window and Fixed Window, several key differences become apparent. In terms of cost, Casement Window are approximately 120% more expensive than Fixed Window, with average prices of £550 and £250 respectively. This price difference reflects variations in design complexity, materials, and installation requirements. For energy efficiency, Fixed Window offer better thermal performance with an efficiency rating of 0.0%, compared to Casement Window's 0.0%. This translates to potential differences in household energy savings. Fixed Window provide superior security features, which is an important consideration for homeowners concerned about safety. Casement Window typically have a lifespan of 20-30 years, while Fixed Window last approximately 30-40 years. Casement Window are particularly suitable for Most residential homes and Kitchens and bathrooms, while Fixed Window excel in Areas where ventilation is not needed and Feature walls. Maintenance requirements vary between the two styles, with implications for long-term ownership costs and convenience. Your choice between these window types should ultimately depend on your specific needs, including budget constraints, energy efficiency goals, security requirements, aesthetics, and the architectural style of your property.
Casement Window
A casement window is hinged at the side and opens outward like a door, offering excellent ventilation and unobstructed views.
Fixed Window
A non-opening window designed to allow light in while providing maximum energy efficiency and uninterrupted views.
Average Price
£550
Casement Window
£250
Fixed Window
Energy Efficiency
0.0%
Casement Window
0.0%
Fixed Window
Security Rating
High
Casement Window
Very High
Fixed Window
Customer Rating
4.7/5
Casement Window
4.2/5
Fixed Window
Detailed Comparison
Features Comparison
Best Suited For
Casement Window Best For:
- Most residential homes
- Kitchens and bathrooms
- Areas requiring good ventilation
Fixed Window Best For:
- Areas where ventilation is not needed
- Feature walls
- High up placements
- Alongside operational windows
Pros and Cons
Casement Window
Advantages:
- Excellent ventilation
- Good security when closed
- Energy efficient with tight seal
- Easy to operate
- Unobstructed views
Disadvantages:
- Can be caught by wind when open
- Limited size options for very large openings
- Opening mechanism may deteriorate over time
Fixed Window
Advantages:
- Most energy efficient option
- No mechanical parts to maintain
- Maximum security
- Uninterrupted views
- Can be manufactured in custom shapes
Disadvantages:
- No ventilation
- No emergency egress
- Cleaning outside surface can be difficult
Cost Comparison
The table below shows typical costs for Casement Window and Fixed Windowin different sizes. Prices include window and installation.
| Window Size | Casement Window | Fixed Window | Difference |
|---|---|---|---|
| Small (600 × 900mm) | £385 | £175 | Save £210 with Fixed Window |
| Medium (1000 × 1200mm) | £550 | £250 | Save £300 with Fixed Window |
| Large (1200 × 1500mm) | £715 | £325 | Save £390 with Fixed Window |
| Bay/Bow (Custom Size) | £1,375 | £625 | Save £750 with Fixed Window |
Additional Cost Considerations
Installation Complexity:
Casement Window windows typically require more work to install compared to Fixed Window windows, affecting labor costs.
Long-term Value:
Consider energy efficiency ratings and durability - Fixed Window windows offer better long-term energy savings.
Factors Affecting Price
Window Material Options
- uPVC: Most affordable option (1x base price)
- Aluminum: More expensive (1.5-2x base price)
- Timber: Premium option (2-3x base price)
Other Price Factors
- Glazing options (double vs triple)
- Security features and hardware quality
- Property access and installation difficulty
- Regional price variations (higher in London/SE)
Energy Efficiency & Performance
Casement Window Windows
Fixed Window Windows
Energy Efficiency Comparison Summary
Both window types offer similar energy efficiency ratings, but may have different strengths in terms of noise reduction, ventilation, and other factors.
About U-Values
U-value measures how well a window prevents heat from escaping. Lower numbers are better - a window with a U-value of 1.2 W/m²K loses less heat than one with 1.6 W/m²K.
Building regulations require new windows to have a U-value of 1.6 W/m²K or lower. Windows with values below 1.0 W/m²K offer excellent thermal performance but typically cost more.
Energy Savings Potential
| Property Type | Casement Window Annual Savings* | Fixed Window Annual Savings* |
|---|---|---|
| Small (1-2 bedroom flat) | £79 | £84 |
| Medium (3 bedroom house) | £126 | £134 |
| Large (4+ bedroom house) | £183 | £196 |
*Estimated annual savings when replacing single-glazed windows. Actual savings will vary based on your property's insulation, heating system, and local climate.
Maintenance & Lifespan
Casement Window Windows
Maintenance Requirements:
Medium - hinges and handles require occasional lubrication
Fixed Window Windows
Maintenance Requirements:
Very Low - just requires glass cleaning
Maintenance Comparison
| Maintenance Task | Casement Window | Fixed Window |
|---|---|---|
| Cleaning | 2-4 times per year | 2-4 times per year |
| Hardware Lubrication | Annually | Annually |
| Seal Inspection | Every 1-2 years | Every 1-2 years |
| Weather Stripping | Replace every 5-8 years | Replace every 5-8 years |
| Professional Service | Every 2-3 years | Every 2-3 years |
Maintenance Tips
Extending Window Lifespan
- Clean tracks and hinges regularly
- Use silicone spray on moving parts annually
- Check and replace weather stripping as needed
- Inspect and repair caulking to prevent leaks
Signs Windows Need Replacement
- Difficult to open or close
- Visible condensation between glass panes
- Drafts even when closed
- Rotting frames or water damage
Security & Safety Features
Casement Window Security Features
Common Security Features:
- Multi-point locking systems
- Reinforced frames for added strength
- Laminated or toughened safety glass options
- Internal beading to prevent glass removal
Fixed Window Security Features
Common Security Features:
- Multi-point locking systems
- Reinforced frames for added strength
- Laminated or toughened safety glass options
- Internal beading to prevent glass removal
Security Certifications to Look For
Secured by Design (SBD)
Police-backed initiative that certifies products meeting strict security standards.
BSI PAS 24
British Standards Institute certification for enhanced security performance requirements.
Safety Glass Options
Toughened Glass
Heat-treated to make it 4-5 times stronger than regular glass. If broken, it shatters into small, less dangerous pieces rather than sharp shards.
Laminated Glass
Contains a plastic interlayer that holds the glass together if broken. Offers higher security and better sound insulation than standard glass.
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