Double glazing in N21

In conservation areas, slim double glazed units can sometimes be fitted into traditional-style frames, but check with the council first, as listed buildings usually need consent.

Many Victorian terraces still have single-glazed sashes, and moving to double glazing is often the biggest single comfort upgrade, whether through new windows or secondary glazing. Original 1930s leaded lights can be replicated within double glazed units, so you keep the decorative pattern while gaining modern insulation and quieter rooms.

These are houses where originality matters: mock-Tudor details, stained glass toplights and wide bays. We take care to match them rather than fit standard flat frames. The Hertford Loop line runs through, though most roads are quiet. N21 is about 3.1 miles from our factory.

Double glazing uses two panes of glass with a sealed, insulating gap between them, cutting heat loss, draughts and condensation compared with single glazing. We fit it in new windows and doors or as replacement sealed units, suiting almost every home, from older properties still single glazed to houses with failed units.

• Warmer rooms and lower heat loss
• Less condensation on the glass
• Toughened and laminated safety glass options

All about our double glazing → Windows & doors in N21 →