Patent Glazing Systems An ideal solution for external glazed canopies and walkways, we offer a comprehensive range of patent glazing sections to suit a variety of spans, and designs. Proprietary ridge, valley, eaves and verge systems compliment the rafter range, and a variety of internal PVCu decorative cappings complete the picture. Fully Insulated Sloping Glazing Systems Maximise light transmittance and minimise heat loss – our insulated sloping glazing systems breath life into internal living and circulation space.