Business Details
Trusted Window and Door Installers in Milton Keynes
Crown Windows has been a trusted name in home improvement for over two decades, specialising in bespoke windows, doors, and conservatories. Our family-run business combines traditional craftsmanship with modern techniques to deliver energy-efficient, secure, and aesthetically pleasing solutions tailored to individual homeowner needs. Based in Milton Keynes, we serve Buckinghamshire, Bedfordshire, and Northamptonshire, offering a comprehensive service from initial consultation to professional installation. Our FENSA-registered team ensures all work meets stringent industry standards, backed by a 10-year warranty and insurance guarantee. With a 5/5 customer satisfaction rating, we pride ourselves on exceptional service, including free 3D design visualisations, competitive pricing, and a state-of-the-art showroom showcasing our full product range.Our commitment to quality is evident in every project, from period property renovations to contemporary new builds, with customisation options spanning materials, colours, and security features. We prioritise clear communication, timely delivery, and aftercare support, ensuring a seamless experience from quotation to completion. Our expertise extends to acoustic insulation solutions, heritage-style flush sash windows compliant with conservation area regulations, and Guardian Tiled Conservatory Roofs for year-round usability. As an Introducer Appointed Representative of Shermin Finance Limited, we also provide flexible financing options subject to status, making premium home improvements accessible to all.
Services
Windows
Doors
Conservatories
Double Glazing
Tiled Roofs
Highlights and features
- Free consultation with bespoke 3D design plans
- Made-to-measure products with 10-year warranty
- Professional installers with 22+ years' experience
- FENSA Registered Installers ensuring compliance
- 5/5 customer satisfaction rating for service quality
Associations and certifications
- FENSA
What people say
Excellent service
Professional team
Quality products
Prompt installation
Great value
Services
Windows
We supply and install uPVC and aluminium windows engineered for thermal efficiency and security. Our range includes casement, flush sash, sliding sash, tilt & turn, Georgian, and lead designs, all made-to-measure for precise fitting. Multi-chambered profiles and advanced glazing options reduce energy bills while resisting moisture, corrosion, and UV degradation. Available in over 30 RAL colours and woodgrain finishes, our windows combine durability with aesthetic flexibility for both modern and period properties.
Doors
Our security-focused doors include composite front doors, bi-fold, French, patio, and internal options. uPVC and aluminium frames feature multi-point locking systems and reinforced construction for enhanced safety. Customisable with decorative glass, hardware, and over 20 finish options, our doors provide thermal efficiency and low maintenance. Bi-fold designs maximise space transitions while maintaining insulation performance to 1.4 W/mK standards.
Conservatories
We construct bespoke conservatories in Victorian, lean-to, Edwardian, and combination styles with optional Guardian Tiled Roofs. Our designs integrate thermally efficient frames with 24mm argon-filled glazing units, achieving U-values as low as 1.0 W/mK. Tiled roofs incorporate insulated plasterboard ceilings and discreet ventilation, transforming spaces into year-round living areas while maintaining structural integrity against 2400Pa wind loads.
Double Glazing
Our double glazing solutions feature 28mm sealed units with low-iron glass and warm-edge spacers, reducing heat loss by 30% compared to single glazing. Available in all window styles, installations include argon gas fill and Planitherm coatings for improved thermal performance. Sound-reduction options achieve 45dB noise attenuation, ideal for properties near busy roads or schools while maintaining 0.8 g-value solar heat gain control.
Tiled Roofs
Guardian Warm Roof conversions replace traditional glass or polycarbonate conservatory roofs with insulated tiled systems. The composite structure includes 100mm PIR insulation, fire-retardant membranes, and lightweight concrete tiles, achieving U-values below 0.18 W/mK. This eliminates summer overheating and winter condensation issues while maintaining roofline aesthetics and structural compliance with BS 5534 standards.
Questions
What types of windows do you offer?
We provide casement, flush sash, sliding sash, tilt & turn, Georgian, and lead windows in uPVC and aluminium, all made-to-measure with custom colour options.
How long does installation take?
Most window and door installations complete within 2-3 weeks after order confirmation, with conservatories requiring 4-6 weeks depending on complexity.
Do you offer warranties?
All installations include a 10-year warranty and insurance-backed guarantee covering both materials and workmanship.
Can I see examples before purchasing?
Visit our Milton Keynes showroom to explore full product displays, including colour samples, hardware options, and 3D design visualisation tools.
Are your installers certified?
Our team holds FENSA accreditation, ensuring all work complies with UK building regulations and industry safety standards.
Videos
