Based in Lincolnshire, Synerjy are specialist manufacturers and Suppliers of high quality windows, doors and conservatories to the new build, commercial and builders merchants sectors.


Synerjy are specialist bespoke manufacturers and suppliers of Double/Triple glazed units. UPVC windows and doors to the trade, construction sector, residential house builders, commercial projects, care homes and healthcare and education sector.

Extensive experience working in partnership with some of the largest national and regional house builders and main contractors. With this experience and our dedicated team, Synerjy are ideally positioned to work with Architects, House builders, Property developers and Contractors of any size.

Specialising in meeting the demands of fast paced builders merchants where time, flexibility and responsiveness in the supply of made to measure windows and doors is key to facilitating this important customer group, an installation service is also available.

Synerjy Ltd manufactures the Sheerframe windows system.


  • Over 15 years trading
  • All products manufactured at our factory
  • We have our own toughened glass plant
  • 10 Year guarantee provided as standard

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  • Excellent Customer Service
  • BSI Accredited
  • No long lead times
  • Secure by design windows and doors

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Much of our UPVC windows and doors for commercial are fabricated from L.B. Sheerframe UPVC profiles which is widely recognised amongst specialists in the Commercial and New Build markets.