Trade uPVC sliding sash windows in Merseyside

Ordering uPVC sliding sash windows for jobs in Merseyside

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

• Sash locks, sash lifts and restrictors
• Twin sashes sliding vertically in a uPVC box frame
• Georgian and astragal bar patterns
• Tilt-in sashes for cleaning from inside
• Run-through horns or plain sashes

Delivery across Merseyside

Deliveries to Merseyside are booked once your order is in production. The charge is itemised on the quote and the delivery day is confirmed with you in advance.

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.