Secondary glazing in NW3

On listed buildings, secondary glazing is often the preferred way to improve comfort, but check with the conservation officer as listed building consent may still be needed.

Behind Victorian sash windows, vertical sliding secondary glazing aligned with the meeting rail keeps the view uninterrupted and lets both windows open for ventilation. For flats where the lease or freeholder prevents changing external windows, secondary glazing fitted inside is usually the simplest way to reduce traffic noise and heat loss.

Replacement windows here are reviewed closely, so we focus on slim, period-style designs. Finchley Road and Haverstock Hill carry heavy traffic, and flats facing them benefit from acoustic laminated glass. In mansion blocks we check lease terms and any agreed window specification first. NW3 is about 6.6 miles from our Edmonton factory.

Secondary glazing is a discreet second window fitted on the inside of your existing windows, leaving the originals untouched. It suits listed buildings, conservation areas, flats where external windows cannot be changed, and anyone wanting to cut noise and draughts without replacing period windows.

• Reduces draughts and outside noise
• Suitable where replacement is restricted
• Panels open or lift out for cleaning

All about our secondary glazing → Windows & doors in NW3 →