Super Seal Castledawson

Super Seal Window Systems, based in Northern Ireland, are a market leader in uPVC window and door manufacture and installation.

Super Seal Window Systems, based in Northern Ireland, are a market leader in uPVC window and door manufacture and installation. With 23 years successful experience, specialising in providing windows for new build and occupied dwellings for the social housing market, we produce up to 2000 wiindows each week. Approximately 60% of our products are supplied to social housing projects. We successfully deliver to specification and to high levels of customer satisfaction, as demonstrated by our continued long term relationships with leading contractor installers. We are Constructionline registered, Safe T Cert accreditied, Secured by Design Certified and ISO 9001 accredited.