Serving Leicester Since 2011

Trusted local window and door specialists.

A-Rated Energy-Efficient Windows

Designed to reduce heat loss and improve comfort.

Written Product & Workmanship Guarantees

Peace of mind built into every installation.

Traditional Timber Style. Modern Energy Efficiency. Expertly Fitted.

Made-to-Measure Flush Casement Windows

Secure Trade Windows specialises in supplying and installing high-quality flush upvc casement windows. Designed to replicate the elegant appearance of a traditional timber window, our flush windows combine refined aesthetics with superior thermal performance. Every window is double glazed, meets modern building regulations, and is fitted by our expert fitting team to ensure enduring beauty and maximum energy efficiency.

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flush casement windows
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The Flush Casement Advantage: Bringing Comfort and Character to Your Home

Why Choose Flush Casement Windows?

Timeless Aesthetics: The clean, flush-fit window design offers a refined look that enhances the curb appeal of both period and contemporary homes.

Superior Energy Performance: Designed to minimise gaps and heat loss, our frames exceed modern energy-efficient rating standards, helping to lower your utility bills.

Custom Colour Options: Personalise your home with our extensive range of colour choices, including the highly popular agate grey flush casement windows and other modern grey flush casement windows.

Double or Triple Glazing: Choose from double-glazed as standard or optional triple glazing for maximum sound reduction and thermal efficiency.

Peace of Mind: Durable uPVC and secure locking systems provide exceptional weather performance and long-term security.

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flush casement windows

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Ready to transform your home with energy-saving windows and doors?

Fill out the form below and our team at Secure Trade Farmes will be in touch with your free, no-obligation quote.

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Explore Our Flush Casement Options

  • 1. uPVC Flush Casement Windows
    Combining traditional styling with modern, low-maintenance performance.
  • 2. Aluminium Flush Casement Windows
    For ultra-slim sightlines, exceptional strength, and a modern, architectural finish.
  • 3. Flush Casement Timber Windows
    Achieve the rustic aesthetic of wood with the durability and efficiency of modern uPVC.
  • 4. Flush Sash Windows
    Simple, streamlined appearance and excellent thermal performance. Suitable for a wide range of homes with design features such as astragal bars, trickle vents and various glazing options.
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flush casement windows

Choosing new windows or doors is about finding a finish that complements your home beautifully. That’s why Secure Trade Windows & Doors Ltd offers a wide range of colour options for UPVC windows, composite doors, bifolds and roofline products. Whether you want a classic white frame, the warmth of woodgrain, or a bold contemporary shade, we help you match the look and character of your property. Every finish is durable, low-maintenance and designed to stay vibrant for years to come.

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flush casement windows

Why Homeowners Choose Secure Trade Windows

Reliable Flush Casement Windows with a Full Supply & Fit Service

We provide a complete, stress-free home improvement service built on quality, clarity, and trust. We focus on the things that matter most to our customers:

Professional Installation, Guaranteed: Your windows are fitted by our dedicated expert fitting team who guarantee precision. We back all work with a full installation guarantee for complete peace of mind.

Unbeatable Quality & Value: All our frames and glazing, including our popular uPVC flush casement windows, come from trusted manufacturers. We deliver high-performing systems at competitive pricing.

Complete Start-to-Finish Service: From the initial made-to-measure survey to the final check, our process is clear and straightforward. You get reliable support from our experienced team every step of the way.

From Survey to Installation | A Complete Start-to-Finish Service

Our Process

Our complete process ensures accuracy and a clean, stress-free finish:

Step 1: Free Home Survey

Precise, made-to-measure readings taken by our specialists.

Step 2: Manufacturing

High-quality flush casement windows produced to your exact specification with efficient lead times.

Step 3: Fitted by Specialists

Fitted securely by our expert fitting team using strong sealed units.

Step 4: Final Check & Guarantee

We confirm satisfaction and issue your full 10 Year installation guarantee for long-term peace of mind.

Call us on 0116 261 1155
flush casement windows

Built for Performance, Designed for Elegance

Our flush casement windows are engineered for a perfect blend of form and function. The Traditional Flush Fit Design—where the sash sits perfectly level within the window frame—creates the refined, minimal look of classic timber with the benefits of modern uPVC. Whether you are undertaking renovations or replacements, these windows deliver excellent energy ratings, secure locking upgrades, and lasting thermal efficiency, making them a practical long-term investment for any home.

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Real Homes. Real Results

James Hughes profile picture
James Hughes
11:05 16 Mar 26
We've used Secure Trade previously for our windows and were very happy with the price and quality of work. We recently had quotes for a new front door and porch doors, Jason talked us through the options for replacing both sets of doors and in the end we went with Jason's recommendation to remove the porch doors completely and replace just the front door. The fitters were professional and have done a great job, we're well pleased with the result.
Dan10 profile picture
Dan10
12:20 13 Mar 26
Really good experience from start to finish. Survey and quotation completed quickly. Great communication on design and advice around what style, fittings and doors would work for us.

Everyone we met was punctual, polite and took time to explain the process and answer questions.

The fitters were top notch. They worked with us to get things done properly, allowing us time to think and plan around other tasks.

They took a lot of pride in getting things just so and the banter was genuine and funny especially whem they were cleaning up.
Which they did each day and made sure we were always left secure and safe.

When there were issues they took responsibility for getting it sorted. No need for us to chase or complain. A unit damaged in transit was replaced within 4 days.

Great from start to finish - thankyou Jason, Rob and Eric.
Niam Modi profile picture
Niam Modi
23:03 17 Feb 26
Great product and service from Secure Trade Frames. Recently replaced 3 windows, front and back door. Could not be happier. The service from beginning to end was great. Jason was very helpful and made the entire process very easy. The fitters were very friendly and professional. I would certainly recommend.
D P profile picture
D P
21:18 14 Feb 26
We recently had new windows fitted by Secure Trade Frames. I couldn’t be happier with the results. From start to finish, the service was professional, reliable, and stress-free. Jason and Denise’s responded promptly to all my queries, Rob was punctual, tidy, and clearly takes great pride in his work.

The windows are of excellent quality and the installation was completed to a very high standard. Everything was left clean and tidy afterwards, and Rob took the time to make sure we were completely satisfied before leaving.

I would highly recommend Leicester Secure Trade Frames to anyone looking for new windows – fantastic workmanship and great value for money. Thank you again!
Brian Geier profile picture
Brian Geier
17:01 13 Feb 26
We had a replacement set of upvc French doors fitted. Quality is superb. Fitted in a morning. Fitter was first class and left my house clean and tidy. Would definitely use again. Very happy customer!
Katie Hill profile picture
Katie Hill
21:07 02 Feb 26
We had a new front door fitted and super happy with it. We’d been debating a new door for a while as the original one on our new build (10 years ago) has always been drafty. So Jason came over, measured up, got a quote, wasn’t pushy. WE LOVE IT. Chap that fitted it was great, so conscientious and did a fab job. Would def have these over to fit windows too. Thanks 🙂
Dan Legate profile picture
Dan Legate
17:30 29 Jan 26
We recently had all of our old box sash single-glazed windows removed and replaced with uPVC double glazing, along with having our back door replaced. From start to finish, the whole process was smooth and well organised.
The fitters arrived on time, were polite and professional throughout, and clearly took pride in their work. They worked efficiently and made sure everything was fitted properly, and they also kept disruption to a minimum. Once the job was finished, they left the house clean and tidy, which we really appreciated.
We’re extremely pleased with the quality of the windows and door and have already noticed the difference they’ve made. Overall, it was a great experience and we wouldn’t hesitate to recommend Secure Trade Frames to anyone considering new windows or doors.
Admin Support profile picture
Admin Support
07:37 28 Jan 26
I recently had patio doors fitted by Secure Trade Windows and the service was excellent from start to finish. Communication was clear and helpful throughout, the team arrived on time, and the installation was carried out to a very high standard. The fitters were professional, polite, and left everything clean and tidy. The doors look amazing and are great quality. I’m extremely pleased with the result and wouldn’t hesitate to recommend Secure Trade Windows to anyone.
Cathy Hennessy profile picture
Cathy Hennessy
18:58 16 Jan 26
We had STF to replace most of windows and doors. It was a very professional service and the quality of the products were excellent. The workmanship was great and they took away the windows they took out. They cleaned up after themselves and were respectful and polite. Out of 3 quotes they came in the most competitive for a premium product.
We will definitely use them again for our bifolds when we renovate our kitchen.
Jackie Beattie profile picture
Jackie Beattie
17:43 15 Apr 25
We had new windows to the front of the house and modern black framed french doors, leading out to the conservatory, all made and fitted by Secure Trade frames.
The quality was exceptional and the fitters were professional, clean and fit everything to a high standard.
We would definitely recommend them!
Ian Nutting profile picture
Ian Nutting
08:58 07 Apr 25
Really happy with our decision to go with Secure Trade Frames to replace our windows. Very competitive pricing, with excellent fitting, leaving no mess and taking a lot of care over the final finish. Thoroughly deserved the 5 star rating.
Laura Bramley profile picture
Laura Bramley
11:34 01 Apr 25
We had our new front door fitted and supplied by Secure Trade Frames LTD and we are absolutely thrilled with how its turned out! There knowledge, professionalism, attention to detail and how clean and tidy they work is outstanding and we will definitely be using them again when it comes to changing our windows in the future! Thank you so much 👍🏼
Graham Cleaver profile picture
Graham Cleaver
18:53 21 Mar 25
We had a fantastic experience with Secure Trade Frames from start to finish. By far the cheapest of the four quotes we had and by far the best attention to detail, personal attention and service. We had a replacement front door and window, replacement back door and replacement French doors. The finish is excellent and we couldn’t be more pleased.
Sam G profile picture
Sam G
10:40 06 Mar 25
I can't rate Secure Trade Frames highly enough, we had an awkward job that needed doing in a tight timeframe and Jason and his team came through to get the job done with no issues whatsoever! I would highly recommend these guys.
Steve Plant profile picture
Steve Plant
14:37 05 Mar 25
I required urgent attention to the locking mechanism on my front door and contacted Secure Trade Frames online. They were very quick to get back in touch and an appointment was made with a clear estimate of what the costs would likely to be, based on a couple of options regarding potential faults. I had to change the agreed time at short notice but they re jigged their arrival to fit in with my availability. On arrival the work was completed efficiently and in a cheerful manner. Payment went just as well via card across the phone. In short from the initial contact to final payment the process was smooth and trouble free - would certainly use again and recommend - Steve Plant
Mohit Sharma profile picture
Mohit Sharma
11:49 18 Feb 25
Excellent service from start to finish and a very quick turnaround time on making the doors. I would recommend Secure Trade Frames highly given the great experience I've had with them.
Ryan Armitage profile picture
Ryan Armitage
16:21 16 Feb 25
We at Armison have been using secure trade windows over the past 10 years. They have always gone above and beyond in helping us out on our projects.
We would definitely recommend them for any of your window/doors and conservatory projects.

Honest, reliable, affordable and outstanding workmanship

Thanks Jason and team
Josh Pearce profile picture
Josh Pearce
09:55 09 Nov 24
Had some windows replaced recently by Secure Trade Frames, excellent job and service from
Jason & his team. Highly recommend, I will certainly be a returning customer.
Photo from customer review
Fiona B profile picture
Fiona B
21:35 30 Oct 24
From the quote to the installation I can not fault the team. Jason is a great contact in terms of need, Lewis and partner arrived, carried out the work, on time, polite, clean and work was on point. Denise was overseeing everything. Would highly recommend this team

Installation times vary based on the number of windows and property type but most homes are completed within one to two days. All frames are made-to-measure to ensure a smooth fitting process.

Yes. Flush casement timber-effect windows replicate the appearance of traditional timber while offering modern efficiency. They are ideal for character homes, cottages and period-style properties.

Yes. Our windows feature strong sealed units, excellent thermal efficiency and the option for triple glazing. This helps reduce draughts and maintain indoor warmth.

We offer a wide range of colours, including agate grey, anthracite grey, black ash and classic woodgrain finishes. These options allow homeowners to match existing windows and doors.

Yes. We regularly replace traditional timber windows with uPVC flush casement windows designed to replicate classic styling while offering improved performance and lower maintenance.

Each window system includes secure multi-point locking, robust hinges and high-strength frames for added peace of mind.

Yes. uPVC and aluminium frames require minimal upkeep and resist fading, warping and weathering.

Improved insulation, double glazed or triple glazed options and high-performing sealed units can support lower energy bills throughout the year.

Secure Trade Windows offers both a supply-only service and a full professional installation service by our expert fitting team.

Get Your Free Quote

Ready to transform your home with energy-saving windows and doors?

Fill out the form below and our team at Secure Trade Farmes will be in touch with your free, no-obligation quote.

"*" indicates required fields

This field is for validation purposes and should be left unchanged.
Name*