Secondary Glazing Material Costs 2026

    Comprehensive comparison of acrylic, glass, and polycarbonate options

    6 min read

    Choosing the right material for your secondary glazing is crucial for balancing cost, performance, and aesthetics. This guide compares all major materials to help you make an informed decision.

    Quick Cost Comparison

    Secondary Glazing Types Comparison

    Compare different secondary glazing systems to find the perfect balance of cost, performance, and convenience for your needs.

    Sliding Panels
    £300 - £600

    Installation:
    Easy
    Daily Access:
    Excellent
    Thermal:
    Good
    Acoustic:
    Very Good

    Advantages

    • Easy daily access
    • Cost-effective
    • Minimal maintenance

    Considerations

    • Slight air gap
    • Track visible

    Hinged Panels
    £400 - £800

    Installation:
    Moderate
    Daily Access:
    Good
    Thermal:
    Excellent
    Acoustic:
    Excellent

    Advantages

    • Perfect seal
    • Maximum performance
    • Clean appearance

    Considerations

    • Higher cost
    • Less convenient access

    Lift-Out Panels
    £250 - £500

    Installation:
    Very Easy
    Daily Access:
    Fair
    Thermal:
    Good
    Acoustic:
    Good

    Advantages

    • Lowest cost
    • Easy storage
    • Perfect for occasional use

    Considerations

    • Manual removal needed
    • Storage required

    Fixed Panels
    £200 - £400

    Installation:
    Very Easy
    Daily Access:
    None
    Thermal:
    Excellent
    Acoustic:
    Excellent

    Advantages

    • Lowest cost
    • Maximum performance
    • Permanent solution

    Considerations

    • No window access
    • Cleaning difficulties

    Detailed Material Analysis

    Acrylic (Perspex)£150-£250 per m²

    Advantages

    • • Lightest option
    • • Impact resistant
    • • Easy to install
    • • Good insulation
    • • UV resistant

    Disadvantages

    • • Scratches easier
    • • Less rigid than glass
    • • Can discolour over time

    Best For:

    Budget-conscious homeowners, DIY installations, high-traffic areas

    Glass (4mm)£200-£350 per m²

    Advantages

    • • Crystal clear clarity
    • • Scratch resistant
    • • Premium appearance
    • • Long lifespan
    • • Easy to clean

    Disadvantages

    • • Heavier weight
    • • Higher cost
    • • Requires professional install
    • • More fragile

    Best For:

    Period properties, heritage homes, maximizing clarity

    Glass (6mm)£250-£400 per m²

    Advantages

    • • Superior acoustic performance
    • • Enhanced thermal insulation
    • • Maximum durability
    • • Premium quality

    Disadvantages

    • • Most expensive
    • • Heaviest option
    • • Complex installation
    • • Higher frame requirements

    Best For:

    Noise reduction, Listed buildings, long-term investment

    Polycarbonate£120-£200 per m²

    Advantages

    • • Virtually unbreakable
    • • Lightweight
    • • Good thermal performance
    • • Lowest cost

    Disadvantages

    • • Less clarity than glass
    • • Can scratch
    • • May yellow over time
    • • Lower aesthetic appeal

    Best For:

    Security-conscious homes, commercial properties, temporary solutions

    Material Selection Guide

    Choose Acrylic if you:

    • • Have a limited budget (£150-£250/m²)
    • • Plan to DIY install
    • • Need lightweight material for weak frames
    • • Want impact resistance for family homes

    Choose 4mm Glass if you:

    • • Want crystal-clear visibility (£200-£350/m²)
    • • Live in a period or heritage property
    • • Value premium aesthetics
    • • Have professional installation arranged

    Choose 6mm Glass if you:

    • • Need maximum noise reduction (£250-£400/m²)
    • • Own a Listed building
    • • Want the best thermal performance
    • • Are making a long-term investment

    Choose Polycarbonate if you:

    • • Need security and impact resistance (£120-£200/m²)
    • • Have a very tight budget
    • • Want a temporary solution
    • • Are glazing a commercial property

    Average Project Costs by Material

    Small Project (3 windows)

    • Polycarbonate: £1,080-£1,800
    • Acrylic: £1,350-£2,250
    • Glass 4mm: £1,800-£3,150
    • Glass 6mm: £2,250-£3,600

    Large Project (8 windows)

    • Polycarbonate: £2,880-£4,800
    • Acrylic: £3,600-£6,000
    • Glass 4mm: £4,800-£8,400
    • Glass 6mm: £6,000-£9,600

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