Synseal Group is a large nationwide company which incorporates a number of popular fenestration brands including WarmCore, Global and Masterdor.

Some of these brands have been acquired in recent years and now sit within the Synseal Group umbrella of companies. These include K2 Conservatories, Masterdor and Sheerframe (previously Manse Masterdor and LB Plastics) and the residential arm of Village Glass.

The assets of these companies are part of the Synseal Group and all staff are employed centrally, whether they work for a particular brand or across a number of the brands.