At GL Glazing our glass of choice is Pilkington Glass.

For over two decades the Pilkington brand has been the driving force behind the development of energy-efficient glazing. This expertise has been used to strengthen the Pilkington K Glass™ range, which now boasts more choice than ever. So we have even more ways to achieve the Window Energy Rating (WER) you want and to comply with Part L of the Building Regulations, now and in the future.