Synseal Group

We manufacture the most comprehensive range of fenestration products available with a wide choice of window, door and conservatory systems including well-known brands WarmCore, Masterdor and Global.

Synseal Group is the UK’s leading supplier of high-quality products to the fenestration industry, known for market-leading products including WarmCore, Masterdor and Global.

Founded in 1980, we have come a long way from the PVC-U extrusion company we started as, now offering one of the widest product ranges available across our seven UK manufacturing sites.

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.