Business Details
27 Years
experience
Trusted Window & Door Installers in Oxfordshire
Windmill Windows is a family-run business established in 1999, serving Oxfordshire and Buckinghamshire with premium window and door solutions. Our team combines over 25 years of industry experience with FENSA-accredited expertise to deliver energy-efficient, durable installations tailored to modern and period properties. We specialise in uPVC, timber, and aluminium windows and doors, alongside secondary glazing and roofline products, ensuring every project meets exacting standards. Our commitment to customer service is reflected in our personalised approach, from initial consultation to final installation, with a focus on minimising disruption to daily life. As a local business, we prioritise community engagement through partnerships with schools and local events, reinforcing our dedication to both quality and social responsibility.All installations feature A-rated glass as standard, enhancing thermal efficiency while maintaining aesthetic appeal. Our in-house installation teams ensure meticulous attention to detail, with a track record of exceeding client expectations across residential and commercial projects. Transparency and ethical practices underpin our operations, from competitive pricing to comprehensive after-sales support. With showrooms in Oakley and a reputation built on referrals, we remain a trusted choice for homeowners seeking reliable, high-quality glazing solutions.
Services
uPVC Windows
Timber Doors
Secondary Glazing
Roofline Products
Glass Replacement
Details
- Year established: 1999
Highlights and features
- We have over 25 years of experience in residential and commercial glazing.
- Our team holds FENSA accreditation for double-glazing installations.
- We offer tailored solutions for period properties and listed buildings.
- Our installations feature A-rated glass as standard for energy efficiency.
- We provide comprehensive after-sales support and warranties.
Associations and certifications
- FENSA
What people say
1st class service
Exceptional workmanship
Second to none
Good job of cleaning up
Lovely new windows
Services
uPVC Windows
Our uPVC windows combine modern energy efficiency with classic aesthetics, featuring A-rated glass as standard. These durable, low-maintenance frames are available in flush casement and box sash designs to suit both contemporary and period properties. The multi-chambered profiles enhance thermal insulation, reducing heating costs while maintaining traditional visual appeal.
Timber Doors
Handcrafted timber doors offer timeless elegance with enhanced security features. We source sustainably harvested hardwoods finished with weather-resistant coatings to ensure longevity. Custom designs include traditional panelled styles and contemporary flush options, all meeting modern thermal efficiency standards while preserving architectural authenticity in conservation areas.
Secondary Glazing
Secondary glazing systems improve thermal and acoustic performance without replacing existing windows. Slimline aluminium frames with 100mm air gaps reduce heat loss by up to 10%, ideal for listed buildings where original windows must remain. Available in vertical/horizontal sliding and hinged configurations to maintain accessibility and design integrity.
Roofline Products
Grade A uPVC roofline solutions include fascias, soffits, and guttering designed to withstand British weather. The maintenance-free materials resist rot and warping, with colour-matched options available to complement property exteriors. Integrated ventilation prevents condensation, extending roof lifespan while improving energy efficiency through enhanced insulation.
Glass Replacement
We supply and install double/triple-glazed units with custom specifications for thermal, acoustic, and safety performance. Options include solar control glass with self-cleaning coatings, laminated safety glass for high-traffic areas, and decorative astragal bars. All units feature argon gas fills and warm-edge spacers to achieve U-values as low as 1.2 W/mK.
People
James Shield
Director
With nearly a decade at Windmill Windows, James Shield leads operations while maintaining the family ethos established in 1999. His focus on technical excellence and customer-centric approach ensures every project meets exacting standards, from initial design to final installation across Oxfordshire and Buckinghamshire.
Questions
What areas do Windmill Windows cover?
We serve Oxfordshire and Buckinghamshire, including Oxford, Bicester, Thame, and surrounding areas.
Are your installers FENSA-certified?
Yes, our installation teams hold FENSA accreditation for all double-glazing projects.
Can you replace windows in listed buildings?
We specialise in heritage-compliant solutions for listed properties and conservation areas.
Do you offer after-sales support?
Yes, we provide comprehensive warranties and dedicated repair services for all installations.
What materials do you work with?
We install uPVC, timber, and aluminium windows and doors to suit various property types.
Is showroom visitation possible?
Showroom visits require prior appointments to ensure dedicated staff assistance for consultations.
