Business Details
29 Years
experience
Your Trusted Partner for Window & Door Solutions in Oxford
Established in 1997, Isis Windows has been serving Oxfordshire and surrounding counties for over 25 years, specialising in the supply and installation of high-quality windows and doors. Our team of experienced professionals is committed to delivering exceptional craftsmanship and customer service, ensuring minimal disruption during installations while maintaining the highest standards of quality. As a FENSA-accredited supplier, we adhere to strict building regulations compliance, offering a 10-year guarantee on all products for added peace of mind. Our extensive range includes uPVC, sash, flush sash, French, and timber-effect windows, alongside composite, uPVC, bi-fold, and sliding doors designed to enhance both modern and heritage properties.We prioritise environmental sustainability by recycling all old uPVC windows removed from customer properties. Our reputation for reliability and excellence is reflected in the numerous positive testimonials from satisfied clients across Oxfordshire. We provide free, no-obligation quotes from photos, with a 10% discount for prompt decisions. Our commitment to transparency, security, and energy efficiency ensures homeowners enjoy warmer, quieter, and more cost-effective living spaces. With a focus on local market needs and over two decades of industry expertise, we remain a trusted choice for window and door replacements in the region.
Services
Windows
Doors
UPVC Windows
Composite Doors
Sash Windows
Flush Sash Windows
French Windows
Timber Effect Windows
Bi-Fold Doors
Sliding Doors
Details
- Year established: 1997
Highlights and features
- We have over 25 years of experience in window and door installations.
- Our team is FENSA-accredited for building regulations compliance.
- We offer a 10-year guarantee on all products for peace of mind.
- We provide free quotes from photos with a 10% discount for prompt decisions.
- We recycle all old uPVC windows removed from customer properties.
Associations and certifications
- FENSA
What people say
Efficient service
Friendly manner
Smart windows
Courteous team
No mess
Services
UPVC Windows
Our uPVC windows combine durability with energy efficiency, available in multiple styles and colours. They require minimal maintenance while enhancing insulation and security. Ideal for modernising homes without compromising on aesthetics or functionality.
Composite Doors
Composite doors offer superior security and insulation with a wooden core surrounded by uPVC or fibreglass. They resist warping and provide long-lasting performance, available in designs to complement both traditional and contemporary properties.
Sash Windows
Sash windows retain period character for conservation areas and older homes. Double-glazed for efficiency, they maintain traditional aesthetics while improving thermal performance and ease of maintenance for modern living.
Bi-Fold Doors
Aluminium bi-fold doors maximise natural light and connect indoor and outdoor spaces. They are secure, low-maintenance, and add property value through sleek designs that blend strength with contemporary elegance.
Flush Sash Windows
Flush sash windows suit character cottages and listed buildings, preserving architectural integrity. Double-glazed for efficiency, they offer a seamless finish that meets strict conservation area requirements without sacrificing modern performance.
Questions
What areas do you serve?
We operate across Oxfordshire, including Witney, Headington, and Abingdon, with installations extending to surrounding counties.
Do you offer guarantees on your products?
All windows and doors come with a 10-year guarantee for long-term peace of mind and durability.
Can I get a quote without a home visit?
Yes—we provide free, no-obligation quotes from photos, with a 10% discount if you proceed promptly.
Are your installers FENSA-certified?
Yes—we are a FENSA-accredited supplier, ensuring all installations meet strict building regulations compliance standards.
Do you recycle old windows?
We recycle all old uPVC windows removed from properties through our partnership with Eurocell Recycle at no cost to customers.
