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    Solid Roofs

Flush Casement Windows

Market leading supplier in Berkshire, Hampshire & Surrey of Envisage flush casement windows in a host of sizes, shapes and styles.

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Exquisitely designed to make a distinctive statement

Taking their inspiration from the form of the very-first glazed timber window, the flush casement is defined by its simplicity and truthfulness to the original lines. Designed exactly as a carpenter would have intended centuries ago, the opening lights do not stand proud from the frame. With authentic proportions in mind, a diversity of both period and contemporary colours and hardware can enhance your flush casement; this way, you can develop the exact finish to suit your interior style.

So many features

Envisage windows stand out from the crowd due to their unrivalled durability, protection and insulation – acclimatising the sought-after timber-look with the expectations of contemporary life. Enjoy flexible design to suit any home: from the classical aesthetic, through to country new builds, to cutting-edge modern architecture.


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Proportions and lines

Whether it’s simplicity you’re after, or the intricate astragal bars, your chosen look is assured. Every element of our system is authentically proportioned and purpose-built for sophisticated elegance.

Stays and handles

Attention to detail is everything. Without the right hardware, your chosen look for your window is compromised. With a stunning diversity of traditional and contemporary handles, we’ve got a solution to fit seamlessly into your home no matter your interior design preferences.

Textures and shades

The bland, white vision of UPVC is resigned to the history books. Finishes are now subtle, easy-on-the-eye and genuine, with a plethora of different options to choose from. You can mimic the grain of different timbers, select period shades, or even explore dual-coloured varieties to complement a range of interior décor styles, from brick to stone.

Peace of mind with our ‘Secure It’ Locking System

Have full confidence your home is secure with our advanced ‘Secure It’ window locking system. Connecting across the full length of your window for herculean strength, the lock is as fit-for-purpose as it gets, having been tested an incredible 30,000 times. Adorned with the police-certified “Secured by Design” standard and far outperforming the standard industry demands of PAS24 – enjoy full confidence knowing your Envisage windows will offer the best security in the business.

Finishing Touches

There’s no such thing as a perfect finish unless every last detail of your windows are working in unison – this includes the most minute details, such as hinges and handles. However, function alone is not enough; truly superior windows integrate style into the package. Finding a window with the right hardware to complement its aesthetic has the potential to entirely transform it.


Basic hardware and pristine lines are the best way to accentuate the look of a modern home. However, if it’s more traditional in aesthetic, a more refined level of detail can really elevate its personality. Nonetheless, whatever your chosen style you’ll want hardware that’s robustly designed and built to go the distance. Regarding locks and handles, the best options are always user-friendly, and built with your lifestyle in mind. Considering colour schemes, it’s important to find one that works with either your frame or your door shades; you could consider a bold contrast or simply opt for a gentle blend that fits seamlessly and stylishly into your chosen decor.


With a full range of accessories, Envisage windows have been engineered to have the perfect fit and the exact proportions to complement interior style. With astragal bars, you can bring-to-life the exquisite charm of a small paned window without dealing with the cumbersome reality of separate glazing, or the task of painting around the niggly window beads. Subtle but impactful, a single astragal bar has a considerable aesthetic benefit to a window, even adorning a larger pane of glass with a striking accent. To soften the lines of your windows, you can also consider arch-headed inserts, while trickle vents are a compelling option for secure night-time ventilation. You may also consider cills to round-off an installation perfectly.

Colours to suit every type of home

Though we may not have quite all the colours of the rainbow, we’ve definitely got enough stunning shades, captivating timber effects and eye-catching textures to please even the most discerning of palettes. With the option to choose a separate colour and finish for both inside and outside – whether you desire subtle or head-turning – we’ll stop at nothing to give you the perfect finish for your home.

Berkshire, Hampshire & Surrey’s Best Orangeries…

Nothing gives us greater pleasure than when a local Berkshire, Hampshire or Surrey householder gets in touch with us to ask whether we can integrate our windows into their home.

Many of the windows you see in your local neighbourhood will more than likely have been designed, fitted and installed by TradeMark as people seem to love what we do, and we love giving it them. We deal with every single aspect of window installation, inside and out, so you’re in very capable hands. Just let us work our magic and help make your aspirations of owning a stylish home improvement come true.

Energy Efficiency

Quality windows are those that have a great level of thermal efficiency, allowing less heat to escape from your home. This of course has a knock-on effect to your energy bills, whilst simultaneously being environmentally friendly. All of our products are designed and manufactured with energy efficiency in mind. Our window energy efficiency levels go from C to the highest levels of A+ and A++, so we have the right choice for you.


You want to impress visitors into your home with the aesthetics of you new windows, however it’s imperative that in addition to boasting fresh looks, your windows are suitably tough and will protect your home around the clock. Windows from Trademark will give you such peace of mind as its robustness is quite extraordinary due to the design and manufacture of top quality locking systems and utilising a mixture of incredibly resilient materials.

Noise Reduction

Home improvements such as new windows, require consideration around how noises from the outside world could enter your home. This is important for properties in built-up areas, but also needs considering for people living close to main roads. All windows from Trademark are built with noise reduction in mind, tested thoroughly and perpetually improved to ensure you have the most enjoyable living areas you could wish for that aren’t affected by noises outside.

See some of our replacement window projects

Take a look through the replacement window projects we’ve completed for some of our happy customers, or visit our projects page for a broader look of other types of projects

Leaded Windows & Doors

These leaded windows and doors give a traditional feel, as the leaded panes and shapes in the door glass allow for a more intricate design, meaning...


Bungalow Windows, Doors & Roofline

White UPVC Casement windows were used on this property to complement the lighter brickwork and white roofline, then contrasted with a black composite front door to...


Woodgrain Windows & Door

Woodgrain windows and doors are a perfect and practical solution for maintaining the traditional styling of an older home or adding a classic feel to a...


Tilt & Turn Windows

A stunning property in a beautiful landscape benefited from the addition of tilt & turn windows, bringing the outside in. A white UPVC finish guaranteed minimal...


Bespoke UPVC Windows

By changing out the old bay windows for new bespoke vertical sliding UPVC windows, not only were we able to increase the heat retention of this...


Customer Satisfaction

As part of our ongoing commitment to customer satisfaction we also ensure that every one of our window and door installations is assessed by an independent Government approved inspector. Not required to do this by law, we insist on this measure to ensure your satisfaction.

To further reinforce the conviction we have in the quality of our products and the expertise of our fitters, we offer homeowners throughout Berkshire, Hampshire & Surrey a 10 year guarantee.

We understand that for some, seeing a picture or video is not enough for such an important decision. That is why we have created our fantastic Woodley showroom. The biggest indoor showroom of its kind in the area, we are proud to offer a fantastic range of conservatories, windows and doors on display. Featuring workable models, our displays allow you to see, touch and feel the quality of our products for yourself and enables you to make a clearer decision as to what best suits your needs.