Owners of period homes face a familiar trade-off: keep the original windows and their character, or make the house warm and quiet. Today there are three main ways to have both. Here we will compare Fineo vs Secondary Glazing vs Double Glazing:

Fineo vacuum glazing
Fineo uses a vacuum, rather than gas, between two panes. Without air to carry heat, it insulates like triple glazing at a similar thickness to single glazing. That means it can often be fitted into original timber sash frames without replacing them. It is made in Europe and fully recyclable. Clearglass is one of the few specialist Fineo installers in the UK.
Best for: sound timber frames where you want the warmest result and a single, clean pane of glass.
Secondary glazing
Secondary Glazing is a second, independent window unit fitted to the inside. It is reversible at any time, making it the standard choice for listed buildings, and it is the strongest of the three for noise because the wide gap between panes blocks sound well.
Best for: listed properties, noisy locations and windows where the original glass must stay.
Slim double glazing
Slimline sealed units can work in some period frames, but they are thicker than single glass, so rebates may need modifying and the sight-lines can change.
Best for: unlisted homes where frames can be adapted.
How to choose: Fineo vs Secondary Glazing vs Double Glazing
Start with three questions. Is the building listed? Is noise or heat the main problem? Are the existing frames sound? We can visit, check your windows, and provide an honest recommendation and a free, no-obligation quotation.
FAQs
Can Fineo go into any sash window? Most sound timber sashes can take it, but each frame will need checking to confirm suitability.
Can I combine options? Yes. Some customers fit Fineo in living rooms and secondary glazing in a noisy bedroom.
Book a free consultation, or visit our Cottenham showroom to see Fineo samples.
We are a trusted, local glass and glazing company- but don’t just take our word for it; visit our Trust Index page to see for yourself.





