About us – Specialists in Flush Sash uPVC Windows & Bespoke Glazing Solutions
At FLUSH SASH UPVC, we are dedicated specialists in the manufacture and installation of flush sash uPVC windows, alongside a full range of high-performance uPVC and aluminium doors and windows. With over 25 years of hands-on industry experience, we combine traditional window aesthetics with modern manufacturing technology to deliver products that look right, perform exceptionally, and last for decades.
Experts in Flush Sash Windows
Flush sash windows are at the core of what we do.
Unlike standard casement windows, flush sash windows sit perfectly flat within the frame, replicating the clean lines of traditional timber windows while offering all the benefits of modern uPVC.
Our expertise ensures:
- Authentic timber-look appearance
- Precision-engineered flush finishes
- High thermal efficiency
- Long-lasting durability
- Secure, modern locking systems
Whether you’re upgrading a period property or designing a contemporary home, our flush sash windows deliver both style and performance.
Over 25 Years of Industry Experience
We’ve spent more than two decades working across:
- Window and door manufacturing
- Fabrication and system design
- Technical surveying
- Installation and aftercare
This depth of experience allows us to:
- Recommend the right products for your property
- Identify structural considerations early
- Manufacture with precision
- Install to professional standards
We don’t just supply windows — we understand how they should be built and fitted properly.
Manufactured for Quality, Not Volume
All of our products are made-to-measure and manufactured with care, ensuring:
- Consistent build quality
- Accurate sizing
- Reduced lead times
- Better overall performance
By controlling the manufacturing process, we maintain high standards across every order.
Our Product Range
While flush sash windows are our speciality, we also manufacture and install:
Flush Sash uPVC Windows
- Timber look aesthetics
- Flush external finish
- Ideal for heritage and modern homes
Standard uPVC Windows
- Energy efficient
- Low maintenance
- Secure and durable
Aluminium Windows
- Slim sightlines
- Contemporary appearance
- Long lifespan
Aluminium Bifold Doors
- Open-plan living solutions
- Strong, lightweight frames
- Smooth operation
Aluminium Sliding Patio Doors
- Large glass panels
- Minimal frame design
- Modern aesthetics
Composite Doors
- High security
- Weather resistant
- Wide design choice
uPVC Doors
- Cost-effective
- Durable
- Versatile applications
Installation you can Rely on
A high-quality window is only as good as its installation.
Our experienced teams:
- Carry out detailed technical surveys
- Install with precision and care
- Follow UK building standards
- Ensure long-term performance
We take pride in doing the job properly — not rushing installations or cutting corners.
Why Choose Us?
- Specialists in flush sash window systems
- Over 25 years of glazing industry experience
- Made-to-measure manufacturing
- Traditional aesthetics with modern performance
- Professional installation
- Honest, transparent quotations
Designed for UK Homes
Our products are built to meet the demands of UK properties, including:
- Period homes and cottages
- Conservation-style upgrades
- Modern new builds
- Renovation projects
We understand the balance between appearance, performance, and compliance, ensuring every installation meets current standards.
Built on Trust and Reputation
Much of our work comes from recommendations — a reflection of our commitment to quality, reliability and customer satisfaction.
We know replacing windows is a long-term investment, and we aim to deliver results that stand the test of time.
Speak to Our Team
If you’re considering flush sash uPVC windows or any other glazing upgrade, our experienced team is here to help.
We offer:
- Expert advice
- Technical guidance
- Competitive quotes
- Professional installation
Get in Touch
Contact us today to discuss your project and discover why so many homeowners choose us for flush sash windows and glazing solutions.