Climate crisis, cooling cure
Following the hottest UK summer on record, Caribbean Blinds’ managing director, Stuart Dantzic, explains why smarter solar shading matters more than ever.
When the history books describe the summer of 2025 in the UK only one word will be required: hot. Four heatwaves swept across Britain sending temperatures past 30°C and leaving thousands of homes uncomfortably hot.
Bedrooms became ovens and living rooms turned into airless traps as fans and air conditioning units worked overtime. And at the time of writing, the unseasonably warm autumn weather is offering little respite.
In the middle of that long, stifling summer, we released a White Paper examining overheating in buildings and the attitudes homeowners hold towards possible solutions. The results were eye-opening. People certainly feel the heat, but most have little idea why it happens or how best to fix it.
The survey revealed that 41% of homeowners are worried about overheating yet only 15% connect it to poor shading. Instead, many rely on makeshift measures such as pulling curtains shut, plugging in fans or turning on energy-hungry air conditioning.
The real culprit is solar gain. Sunlight pours through glass as shortwave radiation, warms surfaces inside and bounces back as trapped heat. External blinds block this energy at source, cutting solar gain by up to 97% and lowering indoor temperatures by almost 20°C. Despite the effectiveness, they remain rare in British homes.
The risks of inaction are growing. In July, a 10-day European heatwave was linked to 2,300 deaths, 1,500 of them attributed to climate change by Imperial College’s Grantham Institute. University College London has warned that in a worst-case scenario heat-related deaths in England and Wales could top 34,000 by the 2070s. And as the BBSA points out, overheating is no longer confined to July and August. It now lingers into September and October long after people expect the danger to have passed.
However, this growing problem also points to a significant opportunity for installers. As demand for glazing continues to rise, so too does the need for effective shading to balance it. Modern homes feature larger glass areas, sliding panels and bi-fold doors, all of which increase solar gain. Installers who already understand glazing are perfectly placed to guide homeowners towards shading systems that complement their windows and protect the home from excessive heat. In a competitive market, offering external blinds can help businesses diversify, strengthen customer relationships and open a new revenue stream.
Modern living
In Spain, Italy and Greece external blinds and shutters are part of everyday life. Victorian Britain embraced shading too, with awnings over shopfronts and verandas shielding drawing rooms. Only cheap energy and the spread of air conditioning caused the practice to fade. Now it could not be more relevant.
Research by London South Bank University found external blinds reduced the temperature in London flats by nearly 20°C. At Salford University they were shown to cut winter heat loss by more than 20%.
Today’s blinds are engineered for modern living. They can shade sliding doors, rooflights, conservatories and pergolas. Mesh fabrics preserve the view while blackout options turn bedrooms into cool sanctuaries. Aluminium frames and high-tensile fabrics provide strength with little maintenance. For installers this means a highly adaptable product that can be fitted to a wide range of properties without complex construction work.
At Caribbean Blinds, we have also invested in training, with our team completing the BBSA’s Smart Solar Shading Advisor course so they can explain in plain terms how shading transforms both comfort and energy use. This is the kind of specialist knowledge that benefits installers too.
Success in difficult times depends on diversification, and adding solar shading gives glazing professionals another string to their bow, helping them grow in a market increasingly shaped by sustainability and performance.
The White Paper leaves no room for doubt. Overheating in British homes is here to stay. Relying only on mechanical cooling wastes energy and adds pressure to the grid. Smarter external shading offers a simpler and more sustainable way forward.
For homeowners it means lasting comfort. For installers it means fresh opportunity. In a changing climate, both could make all the difference.