Trade uPVC sliding sash windows in Dorset

Ordering uPVC sliding sash windows for jobs in Dorset

Most vertical sliders are ordered as straight replacements for timber box sashes. If the originals have horns, glazing bars or a particular meeting-rail height, note it on your schedule and the new windows are made to match.

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

• Spiral or constant-force balances sized to sash weight
• Georgian and astragal bar patterns
• Run-through horns or plain sashes
• White, cream and woodgrain finishes
• Twin sashes sliding vertically in a uPVC box frame

Delivery across Dorset

Orders for Dorset 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.

Before anything goes into production you get a written order acknowledgement with sizes, finishes and handing for every item. Check it carefully, because made-to-measure items cannot be returned if the sizes were wrong.