Find the right style for your windows (and your wallet)
Answer a few questions and we'll recommend the best secondary glazing types for your needs
Or explore each option in detail below
Specialist glass that really cuts the noise. If you're near a busy road or under a flight path, this is your friend.
Pop them on, pop them off. Great if you're renting or just want something easy to fit yourself.
Classic sash window style. Looks the part in Victorian and Edwardian homes.
Slides sideways like patio doors. Works brilliantly on wide windows.
Opens like a door or cupboard. Makes cleaning the outside of your windows dead easy.
Take them out completely when you don't need them. Perfect for summer/winter swap.
Tilt it for fresh air, or swing it right open. Fancy bit of kit, this one.
Doesn't open at all, but that's the point - seals tight for max insulation. Cheapest option going.
Metal or plastic? Both have their pros and cons - depends what matters most to you.
Upgrade beyond standard 4mm float glass — these specialist options deliver measurably superior acoustic and thermal results.
Ideal for noise reduction in central London. Two layers of glass bonded with an acoustic PVB interlayer that dampens sound vibrations across all frequencies — delivering up to 50dB reduction when paired with a 100mm+ air cavity.
Best for thermal insulation in draughty listed buildings. A microscopically thin metallic coating reflects heat back into the room while letting sunlight pass through — cutting heat loss by up to 50% without altering the appearance of original glazing.
High-end sound insulation for properties near train lines or major intersections. This specialist laminated glass uses a unique resin interlayer tuned to low-frequency vibrations — the rumble of trains and heavy traffic that standard acoustic glass struggles with.
Our cost calculator allows you to upgrade to these specialist glass types for maximum performance. Select your window type, then choose your preferred glass to see an instant price comparison.
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