Sash window Restoration

Everything you need to know about our restoration and repair services

Partial view of the National Library of Ireland at an angle. Red brick building with white stone and granite stone as decorative features around the doors and windows. Grantite pillars in the centre of each of the repaired double glazed sash windows by Bolger Sash Windows

Bolgers sash window restoration

Bolger Sash Windows is Ireland’s market leader in the restoration and performance upgrading of existing sliding sash windows. Drawing on over 120 years of experience and expertise, we can completely renovate almost all period sash windows, on-site, and improve their original quality.

Our workmanship enables our clients to retain their unique, valuable, architectural features in their original form, remaining true to the timeless style of the property.

Sash window restoration in period homes

Sash windows are an integral part of the character of your period home. However, draughts, decay, high heating bills, traffic noise and windows refusing to open, can be quite a compromise. We can solve all of these problems so that you can enjoy a new world of comfort and convenience.

Our skilled team restore, repair or replace any areas of rot, and with the introduction of a high-performance draught-proofing system, your windows will:

  • Be draught-proof
  • Be energy efficient
  • Slide up and down easily
  • Add value to your property


We have been repairing and draught-proofing existing sash windows since 1988.

We can assure you that you will be totally satisfied with the end result!

Stages of a typical sash window restoration project​

After your initial enquiry with our office, we will follow up with a detailed inspection of your windows together with a written report and estimate. This service is free of charge in residential circumstances. Ordinarily, with commercial projects, there is a report fee which is waved upon the awarding of the project.

Work to your windows will be carried out by a team of experienced carpenters on-site and will include:

  • Fitting a draught-proofing system
  • Replacing sash cords
  • Rebalancing weights
  • Replacing staff beads & parting beads
  • Repairing or replacing frames and sashes
  • Ensuring easy sliding action

 

Upgrading your existing sash windows to double-glazing

With Bolger double glazed sash windows you can be assured:

  • Glazing bars are the exact match of original bars
  • Sashes are correctly made – glazing bars are not stuck on
  • External glazing bones are not stuck on. They are housed into the sash in a lattice frame
  • Sashes are putty glazed on the outside


We offer a wide range of glazing options including Pilkington Optitherm double-glazing and BENGglas tempered glazing, also known as Landvac.

Partial view of the National Library of Ireland at an angle. Red brick building with white stone and granite stone as decorative features around the doors and windows. Grantite pillars in the centre of each of the repaired double glazed sash windows by Bolger Sash Windows

Sash windows

Photograph of the front of a period property with a brick facade and back panelled sash windows with a matching back period front door.

New Sash Windows

Front of the newly restored Dun Laoghaire Baths on a sunny day. A one-story period building painted white. Two sets of two sash windows on either side and a period Georgian door in the centre with a fan light above it. All made by Bolger Sash Windows. Two low granite steps from the footpath up to the door. Low granite wall with white railings on either side of the steps that have a granite pillar at the end of both.

Sash Double-Glazing

Exterior photograph of a period red brick facade home with white bay sash window, black period front door, granite steps and window sills.

Visit our gallery to see more of our work