We only supply and fit the very best in our industry and that’s why we install

  • Eurocell Logik Flush Sash Window Systems
  • Double & Triple Glazing
  • MILA, Yale, Winkhaus & Cotswolds Hardware

Utilising some of the UK’s most energy-efficient flush sash window systems, our low-maintenance flush sash windows aim to please in every aspect.

Download our brochure

Unrivalled Beauty

Thanks to a cutting-edge multi-chambered structure, our UPVC flush sash alternatives deliver better thermal performance and energy ratings than original timber options. Transforming the outside of your house like no other window style, look forward to increased natural lighting & the illusion of more space too. Whatever the taste or style of your home, our flush sash windows offer breathtaking aesthetics and designs to suit.



Multi-chambered, ‘A’ rated frames as standard. Achieve some of the lowest U-values around. Double or triple glazing. Exceptional weatherproofing.


Safe & Secure

Secure multi-point locking as standard. Unique night vent facility. Key locking handles. PAS 24 security options.


Full Colour Range

Special heritage woodgrain collection & colour palette to choose from. Dual colour options. Trim options.


Made To Measure

Range of extras, including traditional ironmongery & classic Georgian bars. Our surveyors are IQ Level 3 NVQ Certified in Fenestration surveying, so you’re in safe hands with Aim Windows!

Flush Sash Windows
Grey Bifold Doors

Professional Fitting

Unrivalled quality, attention to detail, customer service & fast turnaround times are top priorities at Aim Windows. Which is why we do not – under any circumstances – employ subcontractors.

Our fitters are exactly that, our fitters.

Get in touch

Flush Sash Windows FAQ's

Welcome to our frequently asked questions section. Here, you will find answers to common inquiries about flush sash windows. If you have any specific questions that are not covered here, please feel free to reach out to our customer support team for further assistance.

Now, let's explore the most commonly asked questions about flush sash windows and their respective answers.

Contact Us

What are flush sash windows?

Flush sash windows are a window style that originated after 1932 and gained popularity in East London and surrounding areas. They closely resemble original timber frames, with sashes that close into the frame and align 'flush' with the window's surface. These windows come in different opening configurations and feature advanced uPVC frames, combining classic details with modern performance.

What customisation options are available for flush sash windows?

Flush sash windows offer a range of customization options to suit your home and personal style. You can choose from a variety of convincing woodgrain finishes and both bold and subtle colour effects. Additionally, you can opt for energy-efficient double or triple glazing. These customization choices make flush sash windows suitable for both period properties and contemporary homes, ensuring conservation compliance, enhanced security, and attractive curb appeal.

Which brands of flush sash window systems are installed by Aim Windows

Aim Windows nstalls the following reputable brands of flush sash window systems:

Eurocell Logik Flush Sash Window Systems
Double & Triple Glazing
MILA, Yale, Winkhaus & Cotswolds Hardware

By utilizing these top-quality window systems, the company ensures energy efficiency and low maintenance for their flush sash windows, offering better thermal performance and energy ratings than original timber options.

What benefits do flush sash windows offer?

Authentic aesthetics resembling original timber frames.
Improved thermal performance and energy efficiency.
Increased natural lighting, creating a brighter interior.
Illusion of more space due to their design.
Enhanced security features.
Suitable for both traditional and modern homes, offering versatile designs.

Why should I choose flush sash windows over other window styles?

Flush sash windows are an excellent choice for homeowners seeking a window style that combines timeless elegance with modern functionality. Their ability to mimic original timber frames while delivering superior thermal performance and energy efficiency makes them a popular choice. Additionally, the customization options, enhanced security features, and versatility in design further contribute to their appeal. Whether you have a period property or a contemporary home, flush sash windows can provide the desired aesthetics and practical benefits.

Download Our Brochures

For a closer look at the finer, technical specifics of our renovation products, our detailed brochures are readily available to download. From versatile casement windows to captivating aluminium bifold doors & ultra-secure composite doors, embrace the opportunity to pursue your home improvement aspirations with Aim Windows.

View our Brochures

Speak To Us Today

No matter how big or small your renovation plans are, we’re here to help. Whether you seek a free, no-obligation quote or wish to book an appointment with one of our friendly experts, please don’t hesitate to contact us.

Get in touch
Checka Trade
National Warranties logo.