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Established in 1974, Sternfenster has always been a family run business dedicated to delivering high quality products and excellent customer service to the trade and retail industry.
As one of the UK’s largest fabricators of quality products for the fenestration industry, Sternfenster remains committed to its customers and is currently being run by Mike and Simon Parczuk, the sons of the original founders.
As the first fabricator in the UK to acquire a seamless welder from Graf Synergy, Sternfenster has revolutionised the way uPVC windows and doors are produced.
View StyleLineWe manufacture a full range of market leading uPVC windows and doors using the Deceuninck 2500 and 2800 series of profile systems. Our aluminium products are manufactured using the high performance profiles from Smart Aluminium.
View WindowsSternfenster operates from an 80,000 square metre state of the art factory, supplying high quality windows and doors to installers, builders and homeowners across the UK. Every window and door goes through a rigorous manufacturing process, with only the very best leaving our factory in Lincoln.
An in-house toughening plant and two fully automated lines produce over 3,500 glass sealed units every week.
Read MoreAll of our uPVC and aluminium products are available through our trade counter located alongside our main factory in Lincoln.
Find Out MoreWe have a fully accredited national network of trusted local Sternfenster Approved Installers.
Find InstallersWe can provide technical guidance on any project, small to large. Simply contact us and we’ll be happy to help.
Contact UsRequest a quote for our aluminium and uPVC windows and doors or view our brochures for more information.
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