21 November, 2025

As the mercury dropped in the UK this week to announce the arrival of winter, lots of us will be looking at rising energy bills and piling the layers on in response.  

The recent energy crisis has really thrown into light how poorly insulated the UK housing stock is. But we are much better at protecting heritage than the environment when it comes to buildings. And those who live or work in old, listed buildings will know how hard it can be to make changes to improve energy efficiency.  

This is where WindowSkins come in. These are frameless, lightweight membranes that act as a secondary layer to windows, forming an airtight seal that traps a layer of air: much like a cosy jumper for the building itself, attaching with magnets to your window frames so they can be removed in summer, and barely visible when installed. This creates additional insulation and reduces draughts, thereby reducing emissions and saving money.  

But it’s not just listed buildings where this product can make a difference. Since they don’t require any building works like double glazing does, they’re quicker, easier and cheaper to install. The manufacturer estimates that the payback period is three to five years, which compares favourably to other solutions.  

Until every home is built to high-performance standards, solutions like WindowSkins are a clear, pane-less way to save money and emissions.  

By Patrick Bapty