To ensure that Sheerlite conservatories safely endure a lifetime of exposure to the elements, all components have been designed using sound structural and engineering principles.

To validate the superior design, the Sheerlite system has been successfully tested by the UKAS accredited laboratories of Taylor Woodrow Engineering. Taylor Woodrow's Cladding Technology Centre operates the largest environmental test facility of its kind outside the USA, and was used to subject a large 6 x 6 metre Sheerlite roof to a full cycle of simulated extreme weather conditions and structural safety tests. This Sheerlite roof is the largest conservatory roof that Taylor Woodrow Engineering has ever tested.

The testing sequence examined:

Air permeability
Watertightness
Wind resistance - serviceability and safety
Snow load resistance
Impact resistance