
Welcome to Smashing Windows
Based in Aylesbury, proudly serving High Wycombe, Marlow, Milton Keynes, Hemel Hempstead, Watford, and surrounding areas
Since 2003, we've successfully replaced over 40,000 double glazed sealed units and installed thousands of windows and doors
20+
Years Experience
40,000+
Units Replaced
CERTASS
Registered Company
Our Services
From window installations to repairs, we offer comprehensive glazing solutions for homes and businesses across Buckinghamshire

Window Installations
We specialise in high-tech Liniar windows with customisable frames. Choose from traditional UPVC, wood appearance, or modern smooth grey finishes. Every installation combines innovative design with engineering excellence.
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Window Repairs
Expert replacement of sealed units and repair of broken handles and hinges. We fix misty, dirty, or damaged windows, restoring them to optimal condition while maintaining your property's beauty and functionality.
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New Doors & Bi-Fold Doors
Elevate your home's aesthetic and security with stylish, robust doors. Each door is tailored to your preferences, creating a welcoming and secure entrance that blends style with customisation.
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Door Repairs
Comprehensive door repair services ensuring seamless functionality. From minor adjustments to significant repairs, we enhance the longevity, performance, security and aesthetic of your doors.
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Secondary Glazing
Enhance thermal efficiency and noise reduction with innovative secondary glazing. Experience improved insulation and reduced noise, creating energy-efficient and comfortable living spaces.
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Dog & Cat Flaps
Professional installation of pet flaps in UPVC doors and double glazed units. Free fitting when you purchase glass or panels from us. Keep your furry friends happy with convenient access.
Get Pet Flap Quote →Why Choose Smashing Windows Ltd?
CERTASS Registered Company
We uphold the highest standards of quality and compliance in all installations. Our CERTASS registration ensures industry regulation compliance, providing insurance-backed guarantees on all window and door installations.
100% British Products
We offer technologically advanced, energy-efficient British products. Our Liniar windows meet today's exacting challenges for security and energy conservation, manufactured right here in the UK.
Complete Customisation
Every property is unique. From frame selection to glazing options, we work closely with you to ensure the end result complements your property perfectly and exceeds your expectations.
Expert Support & Advice
Our friendly, knowledgeable team is always ready to assist. Whether seeking advice, discussing problems, or exploring options, we provide expert support to help you make informed decisions.



Proudly Serving Buckinghamshire & Beyond
Based in Aylesbury, we provide window and door services throughout:
Discover the Difference with Smashing Windows Ltd
Where Quality Meets Expertise – Since 2003
Call us on 01296 630650 or get an instant quote online