uPVC Flush Sash Windows, Peterborough, Cambridgeshire

Liniar uPVC Flush Sash Windows: The Right Choice For Your Home
What makes Liniar flush sash windows so special? Although constructed from uPVC, each profile is mechanically jointed and perfectly replicates the look of timber. Visitors to your home in Peterborough will struggle to tell the difference. This makes them the ideal choice for period properties – or those located in conservation areas – where planning permission restrictions apply.

For your convenience, we cover Peterborough, Market Deeping, Stamford, Yaxley, Thrapston & Oundle and all of the surrounding areas. Why not get in touch to find out more.

Enjoy Better Thermal Efficiency and Lower Heating Costs Today

Liniar flush sash windows combine stunning aesthetics will equally impressive performance. Each profile is capable of achieving an ‘A’ rating. Your home will be much warmer as a result, and you won’t need to worry so much about the rising cost of your energy bills, either.

Double or triple glazed options are available with our uPVC flush casement windows. You can customise your Liniar window by choosing from our selection of security hardware, colours and foil finishes to personalise the appearance of your installation.

Better Views

The slim sightlines produced by our flush sash windows will add genuine market appeal to your home. This is because of the low frame to glass ratio that characterises each Liniar design. When inside, you’ll be able to enjoy improved panoramas of your garden – meaning that your property will feel more connected to the outside. A better sense of interior space will also be achieved.

The Perfect Fit

Our Liniar flush sash windows will fit anywhere. Built into a casement frame, each profile can be installed without drawing attention. The neutral – but nonetheless elegant – design of your double glazing will allow it to be installed in any area of your Peterborough home. Find out more by talking to the I Want Window And Doors team today or by getting an online quote in minutes using our app.

We Do It All

I Want Windows and Doors will take care of all aspects of the installation. If you need uPVC flush sash windows as part of a more wide ranging project – for example, a conservatory build – we’ll survey the area, liaise with regulatory bodies and undertake any additional building or landscaping work required. One call to our team is all that’s needed if you have a question or need an update.

Flush Sash Windows Without Any Weak Points

We chose Liniar windows because they excel in all areas. Better thermal efficiency, improved home security and stand-out aesthetics come as standard with this range – so your investment will pay for itself over time. We’ll also work with you to fine-tune your windows, so that they look and perform as expected.

Because we take care of the entire process, you’ll never need to worry about liaising with – or chasing up – different contractors. The installation will be completed quickly, correctly and within the budget we agreed with you at the start. Why not begin your design journey today by calling or emailing our team today.

Minimal Upkeep

Wooden flush sash windows look admittedly stunning. But they require extensive upkeen in order retain their appearance. Our uPVC Liniar products will reward you with the much-coveted timber look, while removing the need for ongoing upkeep. You’ll have more time available to attend to other important tasks – or can simply relax and enjoy the benefits of your new double glazing.


Your new uPVC flush sash windows will produce a lower U-value that translates into a reduced carbon footprint. Your Liniar product will help the environment in another way, too. No lead is used in the manufacturing process, and each profile is fully recyclable. Make the eco-friendly choice by asking I Want Doors And Windows to fit brand new flush sash windows in your Peterborough home.

Lower U Values

You’re looking for a flush sash window that will act as a lasting investment. Keeping your heating bills as low as possible is, therefore, a high priority. It’s possible to achieve a U-value as low as 0.8 when you ask the I Want Windows And Doors Team to install Liniar systems in your home. Design your product online to explore different design options today and get a free quotation.

Online Quote

More Than Just Double Glazing

When you choose us for your home improvements you choose so much more as well. You will also have the full services of our sister company Nene Property Solutions.

Our unique position allows us to offer our customers a full range of property maintenance services, from groundwork for foundations, full scale renovation and refurbishment of homes, kitchens & bathrooms, to gardening. We have the resources, experience and capacity to provide a tailor made package. Want that new extension for your dream kitchen? No problem, our experts can handle everything for you.

For more than just a double glazing company, choose I Want Windows and Doors!

One Point of Contact for all Aspect of Your Project

No Need for Subcontractors

Full Range of Property Maintenance Services

Gardening, Landscaping & Tree Surgery

Driveways, Patios & Pathing

Heating & Plumbing

Lighting & Electrical

Finishing, Painting & Decorating

Bricklaying & Roofing

Groundwork & Foundations

Environmentally Friendly & Energy Efficiency

lead free

100% Lead-Free

Our windows and doors are produced using a manufacturing process that is 100% lead-free. This results in the removal of toxic materials, making them safer for you and your family, and the environment.

co2 peterborough

Lower Carbon Footprint

The thermally efficient profile that we use helps your home retain heat and therefore reduce the amount of energy needed to heat your home, minimising your carbon footprint.


100% Recylcable

All of the materials used to created our double glazing products are fully recyclable. This sustainable manufacturing process means every part of the windows and doors can be used again at the end of its lifespan.

energy saving trust

Energy Efficient Profile

The thermal insulation performance of our profile will increase the heat retention of your home and improve the efficiency of your central heating system, saving you money and the environment.

Maximum Security

Protect you home with double glazing products protected by industry leading Yale shootbolt locking mechanisms.

Manufacturer Guarantee

After installation of your double glazing product has been completed, you can rest assured that your product has been purpose-built to provide long-term protection for your home. Every Yale shootbolt locking mechanisms are guaranteed against mechanical failure for 10 years.

Globally Recognised

Protect you home with the  Yale shootbolt locking system that has become a world renowned marker of security across the globe, setting the standards that other brands aspired to.

British Standard Institute Specification

At every stage of the manufacturing process there are rigorous tests against the latest BSI security standards pertaining to windows and doors, guaranteeing you a high security Yale shootbolt every time.

Secured by Design

The Yale shootbolt locking mechanism has been officially accredited by the Police backed scheme called Secured by Design. This coveted accreditation endorses the Yale shootbolt as one of the leading security products available.

Liniar Profile

The Liniar uPVC profile is innovatively designed to excel in performance, offering homeowners like you an incredible level of thermal efficiency, security and style.

multi chambered uPVC profile


The Liniar profile consists of multiple chambers which act to break up mini-convection currents while trapping pockets of warm air inside to keep your home warm.

superior gaskets

Weatherproof Gaskets

These double-action gaskets do a fantastic job of keeping out the unpredictable British weather by maintaining a tight weather seal.

double glazing flipper

Unique Glazing Flipper

This unique design feature works in 3 ways to reduce cold transfer, water ingress and noise pollution.

thermal dam uPVC

Thermal Dam

Our high performance Liniar profile utilises a distinctive feature increases the thermal insulation capabilities to reduce heat transfer for a warmer home.

uPVC positive drainage

Drainage Features

Strategically positioned and intelligently designed contours prevent moisture while maximising natural drainage to keep your home warm and dry.

integrated reinforcing

100% Lead-Free

The Liniar profile is manufactured using a lead-free process, making our profile much safer for your family.

Obscure Glass Options





























arctic glazing


charcoal sticks

Charcoal sticks





Handle Options











monkey tail

Monkey tail

Flush Sash Window Prices, Peterborough

Use our free design tool to get a quote using your mobile device, laptop, home PC or tablet – then revisit it as many times as you need to for other products.

Contact I Want Windows And Doors today for expert advice and locally competitive prices.





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