All London Boroughs
    0207 060 1572
    Secondary Glazing Noise Reduction London specialist logo
    Transparent Pricing

    Secondary Glazing Prices London 2026 — Full Per-Window Cost Guide

    Honest secondary glazing prices for every London property type — from £450/window for standard acoustic glass to £650/window for conservation-grade heritage installs. Every quote includes a free survey, professional installation and our 25-year warranty.

    Our Packages

    Standard

    Perfect for typical noise reduction needs

    £450per window
    • 6.4mm acoustic laminated glass
    • Slim aluminium frames
    • Standard colour options
    • Up to 45dB noise reduction
    • 10-year warranty
    • Professional installation
    Get Free Quote
    Most Popular

    Premium

    Maximum noise reduction performance

    £550per window
    • 10.8mm acoustic laminated glass
    • Ultra-slim aluminium frames
    • Full RAL colour range
    • Up to 50dB noise reduction
    • 25-year warranty
    • Professional installation
    • Priority scheduling
    Get Free Quote

    Heritage

    For listed & conservation properties

    £650per window
    • Conservation-grade specifications
    • Period-appropriate designs
    • Invisible fixing options
    • Listed building approval support
    • 25-year warranty
    • Specialist installation
    • Conservation officer liaison
    Get Free Quote

    What Affects Your Price?

    Every project is unique. Here are the main factors that influence your final quote.

    1

    Window Size

    Larger windows require more materials and careful handling

    2

    Glass Specification

    Thicker acoustic glass provides better noise reduction

    3

    Opening Style

    Sliding, hinged, or fixed panels have different costs

    4

    Access & Complexity

    High windows or difficult access may require special equipment

    Additional Costs Guide

    On-site survey & assessmentFREE
    Design consultationFREE
    Detailed written quoteFREE
    Standard installationIncluded
    Removal of existing secondary glazingFrom £50/window
    Difficult access installationQuote on assessment
    Bay window premium+15-25%
    Sash window mechanismsFrom £75/window

    All prices are indicative and subject to site survey. We provide detailed written quotes with no hidden costs after assessing your specific requirements.

    Why Our Pricing Represents Great Value

    25 Years

    Industry-leading warranty on premium installations

    10%

    Average reduction in heating bills

    5-7 Years

    Typical payback through energy savings

    Get Your Free, No-Obligation Quote

    Every quote includes a free on-site survey, detailed specification, and transparent pricing with no hidden costs.

    Call 0207 060 1572Request Quote Online

    Match your budget to the right specification

    Pricing only makes sense once you've matched it to the noise problem, frame style and heritage rules at your property. These guides explain what you're actually paying for and where to spend or save.

    Sources & References
    AI-verified

    Authoritative sources supporting the information in this article.

    1. British Standards Institution (BSI) (2017). Thermal performance of windows, doors and shutters — Calculation of thermal transmittance — Part 1: General. BS EN ISO 10077-1:2017.Open source

      Provides the methodology for calculating thermal transmittance, essential for justifying the cost-benefit of secondary glazing.

    2. Department for Levelling Up, Housing and Communities (2023). Approved Document L, Volume 1: Dwellings (2021 edition updated 2023). Building Regulations 2010.Open source

      The legal requirement for thermal efficiency in the UK which impacts the specifications and pricing of secondary glazing installations in London.

    3. Historic England (2017). Traditional Windows: Their Care, Repair and Upgrading. Historic England Guidance Note.Open source

      Standard reference for costing glazing projects in sensitive London heritage areas where secondary glazing is often the only permissible option.

    4. British Standards Institution (BSI) (2014). Guidance on sound insulation and noise reduction for buildings. BS 8233:2014.Open source

      Defines the acoustic insulation requirements that drive the pricing of high-performance secondary glazing systems in noisy urban environments.

    5. Saint-Gobain Glass (2022). Acoustics Glass Guide: Noise Control and Glazing. Technical White Paper.Open source

      A key industry source for understanding how glass thickness and cavity depth (key cost drivers) impact acoustic decibel reduction in secondary units.