10 Year Guarantee
Available on all products
Energy Saving Products
A+ rated window & doors
Competitive Prices
Value for money
Qualified Team
Strict industry standards
Top benefits of our uPVC Flush Sash Windows
Energy Efficiency & Thermal Performance
The flush-fitting frame sits in line with the sash, minimising thermal bridging and maximising insulation—perfect for homeowners seeking energy-efficient solutions without compromising on style.
Low Maintenance
Unlike timber alternatives, our uPVC flush sash windows require nothing more than an occasional wipe with a damp cloth to stay looking pristine.
PAS 24-Certified Security
The robust construction ensures long-term weather performance, and for complete peace of mind our multi-point locking systems are PAS 24 certified—tested to resist forced entry.
Heritage Style with Modern Performance in Buckinghamshire
Our customers love are crafted to mirror traditional timber designs – complete with a time-honoured woodgrain effect—making them ideal for heritage properties and homes under Article 4 directions or in conservation areas.
You can choose between precision mechanical joints for an authentic appearance or fully welded joints for a seamless, contemporary finish. Every frame is tailored by our local installation team to retain your home’s character while enjoying the benefits of low-maintenance uPVC.
Visit our downloads section below for full details.
Get a QuoteExpert Flush Sash Window Installation Across Buckinghamshire
From Aylesbury to Bicester, our dedicated Buckinghamshire installation team ensures every uPVC flush sash window is fitted to perfection. We begin with a free, no-obligation home survey from our local surveyors—assessing your property’s conservation requirements and recommending the ideal profile and glazing.
All installations are carried out by FENSA-registered fitters, guaranteeing compliance with building regulations and a watertight, draught-free finish. Backed by our 10-year guarantee and supported by our Aylesbury showroom team, you’ll enjoy a seamless project from first enquiry to final inspection.
Contact UsStart Your Design
Areas We Cover in Buckinghamshire
Our team installs flush casement windows in homes across Buckinghamshire, including:
Aylesbury, High Wycombe, Milton Keynes, Buckingham, Amersham, Chesham, Marlow, and Beaconsfield.
No matter where you’re based, our installers deliver precise, professional workmanship and excellent customer care on every project.
Get a QuoteColour Options
Whether your property improvement plans require timeless timber-effect flush sash windows, neutral grey flush sash windows, contemporary black flush sash windows, or something a bit more vibrant to match your personality, finding the best fit for your project is incredibly straightforward with a Double Glazing Direct window installation. With over 150 RAL shades to choose from, as well as diverse dual-colour options, a world of colour awaits! Our vast array of colours are perfect for matching new installations with commercial branding too.
White
Rosewood
Irish Oak
Black
Cream
Chartwell Green
Golden Oak
Grey
Anthracite Grey
Steel Grey
Storm Grey
Titanium Grey
Eclectic Grey
Silvered Oak
Corse Lawn
Glass Options
Our energy efficient flush sash windows are capable of achieving A+6 Window Energy Ratings with modern double glazing & U-values as low as 1.0 with advanced triple glazing. If your room suffers from overheating in summer or is too cold to use in winter, we can install temperature-moderating Low-E glass. We also have an attractive range of decorative glazing, perfect for intricate heritage projects, adding privacy, and one-of-a-kind installations.
Cassini
Taffeta
Tribal
Warwick
Pelerine
Reeded
Oak
Minster
Mayflower
Florielle
Everglade
Contora
Digital
Charcoal
Chantilly
Accessories
From chrome inline locking window handles to exquisite Monkey Tail handles and teardrop dummy window stay bars that hark back to a simpler time - as well as heritage-inspired Georgian bar, Astragal bar, and mock sash horn detailing options - we're confident we have the perfect finishing touch for your new flush sash windows to truly make them your own.
Security
As well as the option to add an extra layer of protection with advanced triple glazing and high quality window locks as standard, all Halo window products undergo extensive testing and checks. This means they exceed British security standards and can achieve the sought-after PAS 24: 2016 Enhanced Security Performance status, for peace of mind they can resist physical attacks by opportunist burglars.
Downloads
Frequently Asked Questions
Are flush sash windows suitable for period properties in Buckinghamshire?
Yes. Our woodgrain-effect finish and choice of mechanical or welded joints ensure compliance with conservation area requirements and Article 4 directions.
Can I get bespoke colours or finishes?
Absolutely. From traditional Whites to contemporary Anthracite Grey, we tailor each flush sash window to match your home’s style.
How energy efficient are these windows?
Our double- and triple-glazed options deliver significant thermal efficiency, cutting heat loss and reducing energy bills.
What maintenance do flush sash windows need?
Very little—simply wipe down frames occasionally. The uPVC material resists rot, flaking, and warping, unlike timber.
What do our customers say?
See more reviewsVery quick and professional service
I am very impressed, my home is much improved. Very professional. Prompt. Punctual. I highly recommend. THANK YOU ALL. I have just been in contact with Double Glazing Direct regarding...
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Damien Martin
We will be going back to Double Glazing Direct
Double Glazing Direct changed our very old and leaky polycarbonate conservatory roof to a new solid roof as well as changing the windows and doors of the same area. From...
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Buckinghamshire
‘Double Glazing Direct’ were brilliant.
They were extremely polite and professional. Before they started the work on the day of installation, taking out the existing windows, they prepared the area with dust sheets and special...
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Greater London
Great job, professional service
Replaced an old aluminium frame patio door with updated upvc doors. Work undertaken very professionally, leaving the area clean and tidy afterwards. Noticed a very slight imperfection upon completion but...
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Buckinghamshire
I would highly recommend
Marc and his team did an excellent job of replacing our conservatory glass roof with a Guardian Warm Roof. Work started on time and was completed within the stated time...
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David Tomlinson
Outstanding Service
We had many issues trying to locate a company to replace our conservatory roof however, this company was recommended to us by a friend of a friend and we couldn’t...
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Buckinghamshire
Visit our double glazing showroom in Aylesbury
We understand that improving your property is a big step, and it can often be difficult to picture new windows, doors and more by just looking at an image on a screen.
Our superb showroom in Aylesbury is the perfect place to get a real feel for the quality of our products and chat with a member of our team to learn more about transforming your home or business.
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Get a Quote for Flush Sash Windows in Buckinghamshire
Transform your home with elegant, durable, and energy-efficient flush sash windows. Contact Double Glazing Direct today to request your free, no-obligation quote. Our friendly team will guide you through the design and installation process, ensuring the perfect fit for your Buckinghamshire property.