Heritage sash window repairs and timber restoration in Sydney
Heritage sash window repairs across Sydney. Timber restoration, sash cord replacement, rot repair and bespoke joinery matched to your period home. Request a quote.
Barnsbury Joinery restores heritage timber sash windows across Greater Sydney, from the Victorian terraces of Paddington and Glebe to the Federation bungalows of Haberfield and the Edwardian and Inter‑War homes of the Lower North Shore. We bring over two decades of British heritage joinery expertise to Australia, working with conservation at the centre of everything we do. The goal is always the same: keep the original window wherever it can be saved, and repair it so it opens smoothly, seals well and lasts another century.
Our approach suits owners of period homes who want their double‑hung sashes, box frames and leadlight kept authentic rather than replaced with modern lookalikes. Trusted local partners carry out the on‑site work in Sydney while our heritage specialists specify the methods, timber and profiles, so the detail that makes a period window right is never lost.
The period homes we work on in Sydney
Sydney's inner suburbs hold some of the finest timber sash joinery in Australia, and each era brings its own detail. The Victorian terraces of Paddington, Surry Hills, Glebe and Balmain typically carry tall, slender double‑hung sashes with fine glazing bars, often paired with cast‑iron lacework and rendered parapets. Woollahra and Darlinghurst show the same vocabulary in grander proportions.
Federation homes across Haberfield, Strathfield, Hunters Hill and Chatswood introduced wider bay windows, coloured and textured leadlight in the upper sashes, and heavier joinery in painted or oiled hardwood. Edwardian and Inter‑War villas on the Lower North Shore and in the Inner West often mix double‑hung sashes with casements and decorative highlight windows. Many of these homes sit within a heritage conservation area or are listed as heritage items, which shapes what can be changed and how any work should be carried out. We tailor every repair to the specific age, timber and detailing of your home rather than applying a single template.
What we do
We cover the full range of heritage sash window work. That includes repairs to rattling, sticking and draughty windows; sash cord replacement and rebalancing so both sashes glide and hold their position; and timber rot repairs to sills, rails, stiles and frames using sound splicing and traditional joinery rather than filler and patch‑ups.
Where an original window is beyond saving, or an owner wants a matched addition, we manufacture bespoke timber windows to the original profiles. We also offer slimline heritage double glazing for improved comfort and quieter rooms, specified so the sightlines and putty lines stay faithful to the period. Glass, including replacement leadlight and heritage‑appropriate panes, is sourced and installed locally by our Sydney partners.
Our local approach and conditions
Sydney's coastal and harbourside climate is hard on timber joinery. Salt‑laden air on the Eastern Beaches and Lower North Shore, driving rain on exposed elevations, and long stretches of humidity all accelerate paint failure and rot, particularly on sills and bottom rails that sit in standing water. West‑facing windows take a beating from afternoon sun, which dries and cracks old putty.
Because of this, we treat weathering, drainage and paint protection as part of the repair, not an afterthought. The bespoke timber sections are manufactured in Barnsbury Joinery's UK studio to the exact profiles of your home, then shipped to Australia, while our trusted local partners handle installation, finishing and any glazing. Our heritage specialists specify the timber species, joinery details and coatings so the result stands up to Sydney conditions and stays true to the original.
Our restoration process
Every project follows a clear, conservation‑led path. It begins with an initial consultation to understand your home, its era and what you want from the windows. Our local partners then carry out an on‑site inspection in Sydney, assessing each sash, cord, weight, frame and glazing pane and noting what can be saved.
From there we prepare a detailed proposal setting out the recommended repairs, any bespoke manufacture and the approvals position. Once agreed, the studio preparation begins, profiles are matched and sections are made, and finally our partners handle installation and finishing on site. You are kept informed at each stage, and the team responds to enquiries within one business day.
Heritage approvals in Sydney
Many of the homes we work on sit within a heritage conservation area or are individually listed under a local environmental plan, whether that is the City of Sydney, Woollahra, Inner West, North Sydney or another council. In these cases like‑for‑like maintenance and repair, keeping the same materials, profiles and appearance, is often exempt from planning approval, but this should always be confirmed in writing with your council before work starts.
Replacements, changes to glazing such as adding double glazing, or any alteration to the appearance of a window are more likely to need council permission. We are happy to help you understand the pathway and to document our proposed methods and profiles so your application, where one is needed, clearly shows the work is conservation‑appropriate. Confirming the position early avoids delays and protects the heritage value of your home. You can read more about our work across Australia on our Australia hub at our Australia page.
Common questions
Do I need council approval to repair sash windows in a Sydney heritage conservation area?
Often not for like‑for‑like repair. Minor maintenance that keeps the same materials, profiles and appearance is frequently exempt from planning approval in conservation areas and on heritage items, but this varies by council and should be confirmed in writing with your local council, such as the City of Sydney or Woollahra, before work begins. Replacements and glazing upgrades are more likely to need permission, and we can help you document the proposed methods.
Can you repair leadlight in Federation windows around Haberfield and the Inner West?
Yes. Federation homes across the Inner West and Lower North Shore often feature coloured and textured leadlight in the upper sashes. We repair and restore the timber joinery, and our local Sydney partners source and install replacement leadlight and heritage‑appropriate glass to match the original panels.
My double‑hung sashes are painted shut and rattling. Can they be saved?
In most cases, yes. Painted‑shut, rattling or draughty sashes are among the most common issues we see in Sydney's Victorian terraces. We free the sashes, replace worn cords, rebalance the weights and repair any rotten timber so both sashes glide smoothly and seal properly, keeping the original window rather than replacing it.
Where does the timber joinery come from?
The bespoke timber sections are manufactured in Barnsbury Joinery's UK studio to the exact profiles of your home and shipped to Australia. Glass is sourced and installed locally, and trusted local partners handle all on‑site work in Sydney while our heritage specialists specify the methods, timber and profiles.
Restore your sash windows
Request a quote and include a few photos. We will respond within one business day.
Request a quoteA studio of The Barnsbury Group
Barnsbury Joinery is the flagship studio of The Barnsbury Group, a second‑generation heritage joinery house. Established in London in 1987, it makes bespoke joinery by hand and carries the parent voice for the family of studios.
