MEASURED, MADE AND FITTED
How it works.
01
We measure.
We visit your home in Chelsea, Fulham or nearby, check your sash windows, take measurements and bring fabric swatches. The visit is free and there’s no obligation.
02
We make it.
We provide a fixed quote for your chosen specification. Once you approve it, we make your Sunhat to fit your windows and confirm the fitting schedule with you.
03
We fit it.
We fit from inside without drilling. Both sashes still open, close and lock as normal. We show you how to use, remove and care for your awning.
Solar heat reduction (%)
Compared with no shading
Illustrative results. Performance varies with window size, orientation and sunlight conditions.
No shading
0%
Grey roller blind
21%
Sunhat (maximum protection)
67%
The science behind the shade
Stop the heat before it gets inside.
Sunlight passing through glass can contribute to indoor overheating. Traditional blinds help manage light, but external shading tackles the problem before direct sunlight reaches the window.
Independent research consistently finds that external shading is generally more effective than internal blinds at reducing solar heat gain and summer overheating.
Explore the independent research
Lund University - Measured shading performance
CIBSE - The physics of solar shading
Building and Environment - 2026 scientific review
UK Government - Warm Homes Plan
CIBSE Journal - External shading: what works in the real world?
Research concerns external shading systems generally. Sunhat-specific performance will depend on fabric, dimensions, window orientation, glazing and installation.