Your browser is out of date.

Update to the latest version to get the full user experience.

uPVC Flush Sash Windows, Luton

Traditional appearance, modern aesthetic.

uPVC Flush Sash Windows in Bedfordshire

We offer outstanding uPVC flush sash windows throughout Luton, Dunstable, Hertfordshire, Bedfordshire and surrounding areas. They are sure to be an exceptional addition to any property.

Flush sash windows are expertly designed to loyally echo the appearance of traditional timber joinery, promising a charmingly traditional aesthetic.

All of our double glazed flush sash windows are accompanied with a comprehensive manufacturer’s guarantee, as well as an insurance backed guarantee. This allows you to enjoy a peace of mind only the highest quality can bring.

Market-Leading uPVC Flush Sash Window Profile

  • Multi-Chambered Profile for Outstanding Thermal Efficiency
  • 100% Lead-Free & Recyclable for an Eco-Friendly Design
  • A+ Energy Ratings

Contemporary Low Maintenance

Utilising premium grade uPVC, our Liniar uPVC flush sash windows promise homeowners ease of use and complete practicality. Due to the inherent nature of high quality uPVC, our flush sash windows in Luton require very little maintenance for them to maintain their pristine appearance.

Enhance your home with windows that stay beautiful with only a wipe of a cloth.

Colour Options

Obtain the perfect aesthetic for your flush sash windows with our comprehensive range of colours and finishes.

These colours include: White, Ivory, Chartwell Green, Dark Blue, Cedarwood and Golden Oak.

How to install a Liniar uPVC window

Not all PVCu windows are the same – and Liniar’s innovative, energy efficient windows are designed to be simple to install. This video has been created to help window installers to fit a Liniar ...

Start Your Quote

Get an instant online price with our easy to use quoting engine.

Get a Price

Product Features

Police Preferred Security

Our range of Luton uPVC flush sash windows have been meticulously tested for their crime prevention qualities, offering high security standards that are due to built in features. This guarantees outstanding home security, ensuring peace of mind.

A+ Energy Rated

Utilising an innovative multi-chambered design, our Liniar flush sash windows work to trap heat within your home and notably increase the heat retention of your property. This allows increased comfort with reduced bills.

Outstanding Weather Protection

Specialising in protecting your property from the elements, our flush sash windows feature unique ‘flipper’ gaskets that promise to eliminate draughts and prevent water ingress. Ensure the adverse British weather doesn’t cause you a problem, today.

Hand Finished

Our flush sash windows are flawlessly manufactured by expert craftsman to guarantee the upmost standards of quality.

Additional Hardware

Customise your Luton windows with traditional monkey tails and dummy stays for equal sightlines.

Flush design

Inspired by traditional joinery, the frame and sash of these windows sit flush when closed.

Refine Flush Sash Windows

We also offer the exceptional ‘Refine’ flush sash rage from Liniar. These accredited windows capture all the charm and grace of a traditional design that has been brought into the 21st century due to modern innovation.

Perfectly designed, these flush sash windows are available in two different styles. This includes either a mechanically jointed frame with welded sash, or a fully mechanically jointed option.

The Refine flush sash window is the only flush sash profile in the UK to offer you unbeatable standards of security throughout. They are also available in a wide range of colours and finishes for the ultimate addition to your home.

Glass Options

windows dunstable leighton buzzard
windows dunstable leighton buzzard
windows dunstable leighton buzzard
windows dunstable leighton buzzard
Charcoal Sticks™
windows dunstable leighton buzzard
windows dunstable leighton buzzard
windows dunstable leighton buzzard
windows dunstable leighton buzzard
windows dunstable leighton buzzard
windows dunstable leighton buzzard
windows dunstable leighton buzzard
windows dunstable leighton buzzard
windows dunstable leighton buzzard
windows dunstable leighton buzzard
windows dunstable leighton buzzard
windows dunstable leighton buzzard
windows dunstable leighton buzzard
windows dunstable leighton buzzard

Benefits of Liniar

All Liniar Products are Made in Britain

Made In Britain

All our Liniar windows and doors are manufactured right here in Britain. When you choose our products, you can be assured of a quality, British design.

Thermally Efficient Windows

Energy Efficient

Featuring a multi-chambered uPVC profile, our Liniar uPVC windows and doors offer high levels of thermal insulation. They are designed to keep heat inside the home where it belongs.

Cost Effective Casement Windows

Save Money

Our uPVC Liniar windows and doors are very cost effective. Capable of achieving A+ energy ratings, they can help your home retain more heat and save you money on those costly energy bills over time.

Better for the Environment


Our Liniar profiles are 100% lead free, meaning they are a better choice for you and your family. They are also fully recyclable, giving you an eco-friendlier home.

Keep Heat Inside

Thermally Efficient

A six-chamber uPVC profile helps you to contain and conserve more heath within your property.

High Security

Strong & Secure

High security locking systems are fitted as standard for a safer and more secure home. Our windows and doors have also been independently tested and carry the PAS:24 2012 accreditation.

Less Frame, More Glass

Slim Sightlines

Our Liniar windows and doors are designed with less frame and more glass, giving you enhanced light and views.

Triple Glazing

Triple Glazing

Designed to accommodate energy saving triple glazing, our profiles are capable of achieving a U-Value of 0.8.

Low Maintenance

Low maintenance

Your Liniar windows and doors will never rot, rust or need re-painting. Their profiles are made for a lasting performance.

Consumer choice

Colours & Finishes

Choose from a wide range of window and door accessories, along with a beautiful range of colours and finishes.

Your Local Double Glazing Company in Bedfordshire

Double Glazing Services

uPVC Bow and Bay Windows


View Product
Smart Aluminium Windows


View Product
Atls Roof Lanterns Luton Dunstable

Roof Lanterns

View Product

Start Your Quote


Start A Quote
Contact Us
Visit Our Showroom