4 expert articles on noise reduction for London period sash windows, from heritage specialists with 15 years' experience.

• Meet the Craftsmen: How a 50dB Noise Reduction Actually Happens in a Chelsea Townhouse — A claim of “up to 50dB noise reduction” should never be treated as a feature of the glass alone. In a period property, acoustic performance depends on…
• The Science of Secondary Glazing: How a 150mm Air Gap Cuts Heat Loss by 70% — For owners of period properties, improving window performance involves more than choosing the lowest U-value. Original sash windows contribute to a…
• Sash Window Soundproofing Cost Explained in Under 3 Minutes — If you are researching sash window soundproofing cost, the two most practical retrofit options are professional draught proofing and secondary glazing.
• Can't Sleep Because of Traffic Noise? How Acoustic Secondary Glazing Cuts Noise by 50dB — How 10.8mm Stadip Silence acoustic glass and a 150mm air gap cut London traffic noise by up to 50dB in period sash windows.