We’ve been installing double glazing windows and replacement doors by Xtreme door in Oxford and across the county of Oxfordshire including Witney, Abingdon and Bicester since 1997 and pride ourselves on quality products with a high level of service to match.
To ensure you get the best service, we’re accredited Fensa members and all of our installations comply with current thermal performance standards as well as coming with a full 10-year guarantee.
With all of these benefits, you can be sure that our products and service standards exceed industry standards.
We’re extremely proud of our excellent customer service track record from a recent independent installation quality survey.
Why Choose Isis Windows?
Isis – What’s in a name?
Isis is a name with a long, proud history. Its first recorded use is as Isa in 1350, while the first evidence of its modern form dates from 1577.
It was also the name of an Ancient Egyptian goddess, later worshipped by Greeks and Romans, but, in Oxford, Isis has long referred to the stretch of Thames north of Iffley Lock.
It comes from the old name for the River Thames, Tamesis, which in the Middle Ages was wrongly taken to be a combination of Thame and Isis.
Isis has long been associated with Oxford rowing. Its the name of the famous university’s reserve boat for its rowing crew, and of a student magazine first set up in 1892.
The university’s research and technology company is also called Isis, as are several other businesses and organisations keen to highlight their connections with Oxford.
We love Oxford and Oxfordshire, too, and are delighted to have our pride in our city reflected in our name.
A FENSA Approved Windows & Doors Installer
FENSA is a government-authorised scheme that monitors building regulation compliance for replacement windows and doors. Every FENSA Approved Installer, from large national brands to small local companies, is assessed regularly by us to ensure its standards are continually maintained.
FENSA have recently just released their first TV advert!