The end of Polycarbonate Roofs ?

As seen here on this months selected installation, glass looks great in a conservatory roof.
Ten years ago glass was specified for only 30% of our new buildings. The very latest figures show a preference for glass to be 97%.
It would appear that days are numbered for polycarbonate as a roofing material.
Our Conservatory Refurbishment and Re-Roofing Division is carrying out lots of work changing existing roofs to both glass and light weight tiled structures with internal plastered ceilings.