GIS Home Improvements

At GIS Windows we are rightly proud of our products. With 28 years of experience, we have strived to supply the highest quality double-glazed conservatories and UPVC windows and doors with the best customer service. Our team has built up an enviable reputation for honest, factual and friendly service, which extends far beyond the salesroom. Unlike many companies, UPVC windows and doors are tailor made to your individual specification and will be manufactured in the groups own factory ensuring total control of the process.



Simply the Best
GIS home improvements appeal to a discerning customer for the satisfaction that they are receiving a service which is ‘Simply the Best’. Our Conservatories UPVC windows and doors will continue to look good and remain effective for many years to come. By selecting GIS, you can relax in the knowledge that you are picking a reputable company which has outlived its 10 year guarantee twice over.



Peace of mind
GIS understands your house is your home and the largest investment you are likely to make. For your peace of mind on UPVC windows and doors all deposits are account protected and our comprehensive 10 year guarantee is insurance backed.