Awning Window vs Casement Window

Comparison Overview

When comparing Awning Window and Casement Window, several key differences become apparent. In terms of cost, Awning Window are approximately 18% more expensive than Casement Window, with average prices of £650 and £550 respectively. This price difference reflects variations in design complexity, materials, and installation requirements. For energy efficiency, Casement Window offer better thermal performance with an efficiency rating of 0.0%, compared to Awning Window's 0.0%. This translates to potential differences in household energy savings. Casement Window provide superior security features, which is an important consideration for homeowners concerned about safety. Awning Window typically have a lifespan of 20-25 years, while Casement Window last approximately 20-30 years. Awning Window are particularly suitable for Bathrooms and kitchens and Basements, while Casement Window excel in Most residential homes and Kitchens and bathrooms. 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.

Awning Window

Awning Window window

A window that is hinged at the top and opens outward from the bottom, providing ventilation while offering protection from light rain.

Casement Window

Casement Window window

A casement window is hinged at the side and opens outward like a door, offering excellent ventilation and unobstructed views.

Average Price

£650

Awning Window

£550

Casement Window

Energy Efficiency

0.0%

Awning Window

0.0%

Casement Window

Security Rating

Medium

Awning Window

High

Casement Window

Customer Rating

4.5/5

Awning Window

4.7/5

Casement Window

Detailed Comparison

Awning Window
Casement Window
Average Price
£650
£550
Energy Efficiency
0.0%
0.0%
U-Value
1.2 W/m²K
1.2 W/m²K
Energy Rating
B+
A
Average Warranty
15.0 years
15.0 years
Reliability Score
0.0/5
0.0/5
Customer Satisfaction
4.5/5
4.7/5
Security Rating
Medium
High
Noise Reduction
Medium-Low
Medium
Ventilation
4.0/5
4.8/5
Maintenance
Low - simple hinge mechanism needs minimal maintenance
Medium - hinges and handles require occasional lubrication
Typical Lifespan
20-25 years
20-30 years

Features Comparison

Awning Window
Casement Window
Hinged at top, opens from bottom
Can be left open during light rain
Often used in combination with other windows
Good for small spaces
Full opening for maximum ventilation
Easy to clean from inside
Excellent seal when closed
Compatible with all frame materials

Best Suited For

Awning Window Best For:

  • Bathrooms and kitchens
  • Basements
  • Above fixed windows or doors
  • Areas needing rain protection

Casement Window Best For:

  • Most residential homes
  • Kitchens and bathrooms
  • Areas requiring good ventilation

Pros and Cons

Awning Window

Advantages:

  • Can remain open during light rain
  • Good ventilation
  • Effective when space outside is limited
  • Works well in combination with fixed windows

Disadvantages:

  • Limited opening range
  • Not suitable for emergency egress
  • Cannot be left open in high winds

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

Cost Comparison

The table below shows typical costs for Awning Window and Casement Windowin different sizes. Prices include window and installation.

Window SizeAwning WindowCasement WindowDifference
Small (600 × 900mm)£455£385Save £70 with Casement Window
Medium (1000 × 1200mm)£650£550Save £100 with Casement Window
Large (1200 × 1500mm)£845£715Save £130 with Casement Window
Bay/Bow (Custom Size)£1,625£1,375Save £250 with Casement Window

Additional Cost Considerations

Installation Complexity:

Awning Window windows typically require more work to install compared to Casement Window windows, affecting labor costs.

Long-term Value:

Consider energy efficiency ratings and durability - Casement 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

Awning Window Windows

Energy Rating:B+
U-Value:1.2 W/m²K
Noise Reduction:Medium-Low
Ventilation Rating:4.0/5

Casement Window Windows

Energy Rating:A
U-Value:1.2 W/m²K
Noise Reduction:Medium
Ventilation Rating:4.8/5

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 TypeAwning Window Annual Savings*Casement Window Annual Savings*
Small (1-2 bedroom flat)£75£79
Medium (3 bedroom house)£120£126
Large (4+ bedroom house)£175£183

*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

Awning Window Windows

Typical Lifespan:20-25 years
Average Warranty:15 years

Maintenance Requirements:

Low - simple hinge mechanism needs minimal maintenance

Casement Window Windows

Typical Lifespan:20-30 years
Average Warranty:15 years

Maintenance Requirements:

Medium - hinges and handles require occasional lubrication

Maintenance Comparison

Maintenance TaskAwning WindowCasement Window
Cleaning2-4 times per year2-4 times per year
Hardware LubricationAnnuallyAnnually
Seal InspectionEvery 1-2 yearsEvery 1-2 years
Weather StrippingReplace every 5-8 yearsReplace every 5-8 years
Professional ServiceEvery 2-3 yearsEvery 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

Awning Window Security Features

Security Rating:Medium

Common Security Features:

  • Multi-point locking systems
  • Reinforced frames for added strength
  • Laminated or toughened safety glass options
  • Internal beading to prevent glass removal

Casement Window Security Features

Security Rating:High

Common Security Features:

  • Multi-point locking systems
  • Reinforced frames for added strength
  • Laminated or toughened safety glass options
  • Internal beading to prevent glass removal
Enhanced Security Features Available

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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