Double glazing Georgian sash windows with FINEO glass

Double glazing Georgian sash windows with FINEO glass
Georgian-Sash-Windows with FINEO glass

Removing old single glazing

This sash window restoration project in a small village near Cambridge saw the team carrying out the retrofit installation of new double glazing into existing frames as well as draught-proofing and redecoration of all windows. The clients were keen to future-proof the window units, as well as improve their thermal properties, which is why they opted for the full work package with the glass we use in the retrofit double glazing offering up to 8 x more thermal efficiency than the original single glazing.

This picturesque and well-proportioned cottage has great aesthetics with its uniform rows of 3 sashes per floor of the slightly rarer sideways-sliding Georgian style. Sashes on the front lower floor also exhibit a beautiful original stone lintel really adding to the authentic feel of the window.

We begin by removing all frames so as to carry out the new fineo glass installation in our on-site workspace. Whilst the windows are out of the frames we also cut the required grooves in the inner frame which will allow for the insertion of the draught-proofing unit:

Frames removed from windows for work to be carried out

Grooves are cut into the window frame to allow for the insertion of draught-proofing

Draught-proofing installation to sashes and frame

draught-proofing inside the frame
draught-proofing seals

During the refit process, we also keep the original Georgian bar on the inside face of the window whilst replicating the bar for the outside of the window. This ensures that when viewed from inside or out, the original aesthetics are maintained and all restoration work blends seamlessly with the original features. This is different to many companies which do not keep the original inside bars, instead of replicating both with beading- whilst this saves time it loses some of the original feels of the window.

FINEO double glazing installation to Georgian Sash Windows

installed fineo glass from inside

FINEO glass installed into wooden frames provides a windows soundproofing effect and improves thermal efficiency.

horizontal sliding window with fineo glass

Discarded old glass and inner frame replaced by FINEO glass

With the inner frames and their new glazing now put back into all windows and draught-proofing strips inserted into the cut groove, the team is just left with the redecoration to complete.

For this, we follow our normal work processes but with a little lighter levels of remedial work on the frames prior to painting due to their reasonable condition. After the scrape back of loose paint, sanding, filling and protection of all areas, spray painting is completed bringing to a close our work at the property.

Yorkshire Sash Window
Double glazed Yorkshire Sash Window
Timber window with fineo glass

Completed double glazing retrofit indistinguishable from the original frames

Window thermographic inspections

The thermal camera photograph shows how effective is new vacuum glazing in blocking heat leakage through the windows.

Window thermographic inspections
Single glazed windows are now upgraded with double glazing and show high energy efficiency on thermal imaging
Read more

Windows are left looking markedly improved, or in the words of our client “better than they ever have done”, which we take as high praise indeed. The owners can now start enjoying the benefits of far more thermally efficient windows and the perks this will bring, to both the comfort of living on the property and running costs.

Client’s testimonial

” — Double glazing installation was first class and the service Chameleon provided has been really really good so we’re pleased with it every
— very pleased”

More testimonials

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  • Double glazing of original sash windows

    Double glazing of original sash windows

  • Fitting double glazing to existing windows in Chelmsford

    Fitting double glazing to existing windows in Chelmsford

  • Retrofitting original sash windows with double glazing in Suffolk

    Retrofitting original sash windows with double glazing in Suffolk

  • Double glazing retrofitting in Wing

    Double glazing retrofitting in Wing