Issue 44 winter 24 - Journal - Page 8
Heritage Sash Window
Restoration: Landmark's
Expertise in Conservation
and Listed Buildings
Landmark Windows recently partnered with an architect to undertake a comprehensive property
renovation in Hampstead, London. This prestigious project involved one of our most in-demand
services: double-glazed sash window replacement into fully restored original box frames.
Landmark Windows, a family-run business founded by
Steve Hunt in 2003, has developed a strong reputation
in the heritage timber window market, providing bespoke
solutions for both domestic and commercial projects.
Now joined by his two sons (Tom & Ben) and a skilled
team of joiners and fitters, Steve has seen Landmark grow
into a trusted name across London’s conservation areas
and listed building projects.
that while the original box frames could be restored, the
sliding sashes had deteriorated beyond repair. Retrofitting
double glazing into these old sashes would not only be
costly but would also damage the original mouldings, as
they were designed for single glazing. Therefore, it was
more sustainable and cost-effective to install new doubleglazed sashes, handcrafted to match the original period
details, into the restored box frames.
A Perfect Fit for London’s Period Properties in
Conservation Areas and Listed Buildings
Working closely with the local council and conservation
authority, Landmark ensured that every detail of the renovation met strict conservation guidelines. By collaborating throughout the project, we provided all necessary
technical surveys, drawings, and proposals to satisfy both
the client and the regulatory bodies.
⁃ Will the new windows match and look like for like?
We reassured the council and the conservation officer by
providing detailed drawings and an onsite example. Landmark’s sash windows are meticulously handcrafted to
replicate the original designs, including matching all existing section dimensions and detailing such as hand-cut
sash horns. We also sourced traditional ironmongery, like
square-end axle pulleys with weights and cords, to ensure
an authentic period look. Custom tooling was commissioned to precisely match the original mouldings and profiles, showcasing our commitment to preserving the
building’s historical integrity.
Key Concerns and Landmark’s Solutions:
⁃ Can any original elements of the windows be retained?
After conducting a full technical survey, we determined
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Conservation & Heritage Journal
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