Welcome to GIS Windows Ltd.

A family owned business established for over 34 years, we supply all sectors of the market including consumers, trade, local authority, commercial and new build customers from our production facility in Luton and our retail showrooms in Luton and Enfield.

A comprehensive range of quality made products is offered, including PVCu windows, doors, conservatories, curtain walling and aluminium windows and doors: all produced to exacting standards and installed by our experienced fitting teams.

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Contact Information

Unit 21, Sundon Industrial Estate, Dencora Way, Luton, Bedfordshire, LU3 3HP
Tel: 01582 494222

Fax: 01582 494145


64 Chaseside, Enfield, Middlesex, EN2 6NJ
Tel: 0208 364 5552

Fax: 0208 364 6790

Email: sales@giswindows.co.uk


  • Delighted with the windows. Perfect. The fitters, Liam and Gary Thompson were brilliant. Efficient and polite, they took every care inside and outside my property. Well done GIS for employing two very hard working gentleman.

    Mrs Sullivan – Enfield,
  • I am just writing to you to say a huge thank you to GIS Windows. As well as having the windows done, they have just finished doing our Soffits, facias and guttering and in both cases we are delighted with the results; especially the windows. At all times in our

    John Morton & Kate Grant – Weybridge,
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