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Welcome to Great Enterprise Company (GEC) 

Installers of high quality windows, doors and conservatories in East Cheshire & the South Manchester area.


We want to give you the peace of mind you deserve when choosing your new home improvement. Whether it be windows, doors, a conservatory or a combination of them all - you want to know you've made the right choice. Click here to see our Safeguard Composite Door Brochure.

Not only do we offer you the market leaders in all our product ranges, we also offer a service second to none from start to finish. You couldn't be in better hands!


  • Supply Only or Supply & Install
  • All Made to Measure
  • Choice of coloured UPVC frames
  • Planitherm Glass where applicable
  • All products manufactured to British Standard
  • Kite Mark regulations
  • 10 Year Guarantee
  • CERTASS Registration



At GEC we strive to offer the best quality products on the market.  Therefore we are proud to offer the Planitherm A-Rated Energy Window to our range.

Everyone is aware of the impact that CO2 emissions have on the environment and the subsequent effect this has on household heating bills.

The benefits to installing A-Rated windows to your home are two-fold:


  • Reducing Carbon Emissions into the environment
  • Savings on household heating bills



GEC Ltd supply and fit windows and doors made using Profile 22 and Spectus and REHAU profiles, which are the best brands in the world.


Profile 22 and Spectus systems are, and have been one of the industry leaders for many years and not only in the UK, but in Europe too where the specification and requirements have always been a lot more demanding and higher than here in the UK.


Profile 22 and Spectus and REHAU windows and doors have been making life warmer and more comfortable for people for over 30 years now, and today, Profile 22, Spectus and REHAU are top suppliers of window, door and conservatory systems, making no fewer than 20 different systems worldwide. The main Profile 22 , Spectus UK and REHAU systems have been tested in accordance with and meet the highest requirements of BS 7412 and are kitemarked to BS EN12608 which incorporates BS EN ISO 9001. They have also been approved by the BBA.


Wherever you live, whatever your style, the Profile 22 and Spectus window, door and conservatory profiles offer the ultimate choice to people who are looking for real quality. The Stylish Choice, the days of chunky, unflattering plastic (uPVC) windows are gone. You'll get stylishly slim good looks when you choose windows, doors and conservatories that use the Profile 22 or Spectus glazed system.


We are different


  • We don't employ salespeople - you won't get the hard sell approach from us.
  • All our fitters are fully employed by us (not Subcontract fitters)
  • We have never been taken over or out of business only to restart soon afterwards
  • We have never been the subject of court action from disgruntled customers or creditor suppliers
  • When it comes to combining technical excellence in UPVC with aesthetic beauty Profile 22 and Spectus products stand out from the crowd. At GEC Ltd we provide and fit the full range of Profile 22 and Spectus window and door products. 



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