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The best secondary glazing matches how your existing window opens. Compare the five main types below to see which suits each window in your home — most properties use a mix.
Mirrors the movement of a sash window, so it looks and operates in harmony with the original. The natural choice for Georgian and Victorian sashes.
Read the full guide →Glides sideways for easy everyday ventilation, ideal for wide openings and large casement runs where a vertical slide would be impractical.
Read the full guide →Opens fully for complete access to the primary window behind, perfect where you want to throw the window wide open or reach deep reveals.
Read the full guide →A discreet, removable panel for windows you open seasonally rather than daily. Easy to take out for cleaning or summer ventilation.
Read the full guide →The slimmest, most cost-effective option, offering maximum noise and thermal performance for windows that do not need to open, such as landing windows.
Read the full guide →A free survey is the easiest way to decide. We assess each window and recommend the right style, balancing ease of use, ventilation and performance. You can also start with our complete guide to secondary glazing or compare secondary glazing vs double glazing.
Book a free survey and we'll demonstrate how each option opens and recommend the best fit for your home.