Trade uPVC sliding sash windows in County Durham

Ordering uPVC sliding sash windows for jobs in County Durham

Sashes tilt in for cleaning, which matters on upper floors of flats and terraces where the outside of the glass cannot be reached from a ladder.

For listed buildings and conservation areas, the council decides whether uPVC sash windows are acceptable. Check before you order; once made to size, the windows cannot be returned.

Specification at a glance

• Twin sashes sliding vertically in a uPVC box frame
• White, cream and woodgrain finishes
• Double glazed sealed units, with heritage spacer colours
• Georgian and astragal bar patterns
• Spiral or constant-force balances sized to sash weight

Delivery across County Durham

Orders for County Durham go out on our mainland routes. The delivery charge and date are shown on your quote, and the date is confirmed when your order is acknowledged.

Building regulations in England

Replacement windows in England should meet Approved Document L: a U-value of 1.4 W/m²K or a Window Energy Rating of band B. Approved Document F expects background ventilation to be no worse than before, which usually means trickle vents. Glazing in critical locations must break safely, be robust or in small panes, or be permanently protected under Approved Document K, which in practice usually means toughened or laminated safety glass. Rooms that need an escape route may need an escape window under Approved Document B. Replacing windows is notifiable building work: the installer self-certifies through a competent person scheme such as FENSA or Certass, or the work goes through building control.

We do not start manufacturing until you have approved the order acknowledgement. It repeats each size, colour and opening direction so you can check it against your survey.