Replacement Double Glazed Sashes

When the situation demands we can manufacture replacement sashes to fit inside your existing sash frame.

Benefits are:

  • Existing framework with it’s period decorative mouldings remain
  • No disruption to your internal décor
  • New sash profiles are manufactured to replicate the existing
  • Less time on-site as new sashes are manufactured off-site and are ready to be installed
  • Costs include our measuring service so they are right first time
  • Replacements for existing sashes beyond economical repair

Glazing types:

For replacement sashes we can use any of our glazing types:

  • Single glazing where Conservation or Planning rules inform
  • Argon filled double glazed units with white Warm Edge Spacers for improved aesthetics. U value of 1.9 W/m2K
  • Standard Clear Pilkington K Glass
    • Toughened or Laminated Safety Glass
    • Opaque patterned Glass
    • Acoustic Glass

Note: We will not use less than 8mm spacer due to the high failure rate of many low sightline units on the market today

  • Pilkington SpaciaTM 6mm Vacuum Glazing with Centre pane U value of 1.1 W/m2K
  • LandVac 8.3mm toughened Vacuum Glazing with Centre pane U value of 0.48 W/m2K


Replacement sashes are made using traditional techniques with full mortice and tenon joints. Available in hardwood (Sapele) or Softwood (Grade 1 European Redwood) and supplied in white primer for future painting or natural timber for staining.