Who We are?
Manufacture Replacement Repair
New Design Double Glazing is the UK’s leading supplier of high-quality products to the fenestration industry, known for market-leading products including WarmCore, Masterdor and Global.
We continually invest in and enhance our extensive product range to deliver the most innovative, efficient and competitively priced products which add value to our customers’ businesses.
Through internal developments and acquisitions, we have gradually built up the most competitive product offer available so we can offer our customers the very best the industry has to offer across a range of markets including window, door and conservatory systems