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Liniar PVC Bifold Doors

Liniar PVC bifold doors, also known as concertina doors or folding doors are doors that can open up an entire wall, give you an “inside outside” option, and turn your garden into another spacious room. You may have seen them featured heavily in Channel 4’s hit show “Grand Designs”.

Homeowners absolutely love them because of the incredible space, light, and flexibility liniar PVC bifold doors provide.

On warm summer’s days, you can invite friends and family for a barbecue and watch their astonished, and, quite frankly, envious reactions as you “fold up the glass wall” and invite them to step outside through your PVC bifold doors.


On cold winter’s nights, you can close the doors tight and enjoy the breathtaking panorama of your garden blanketed in snow with icicles glistening in the trees… while you stay warm and cosy inside. That’s the beauty of liniar PVC bifold doors.

PVC bifold doors can be colour bonded with any colour from the RAL chart and we can offer a choice of Rosewood, Mahogany and Oak foiled finishes.

We can provide any style to suit your taste and to accompany your new Liniar PVC bifold doors we offer a selection of fittings i.e. door handles, locks and hinges in a variety of finishes including white, gold and black. We also offer a slim line aluminium bi-folding door in a range of colours along with timber concertina doors.

Visit our showroom in Diss to see our PVC bifold doors or call now for a quote.


Colour Options

Norfolk and Suffolk are filled with colourful homes. Stratton Glass and Windows now offer a wide range of colours for our doors. Our uPVC and composite doors come in a selection of colours. Along with the traditional rosewood, oak and mahogany finishes we now offer a wide range of adventurous colours including cream, grey, chartwell green and many more!

If you don’t see a colour you like we can even supply your new door to any RAL or BS number for an additional charge.

For more details please visit our downloads section a select the brochure in connection with your door. Alternatively please give us a call and we will be more than happy to help you.


We offer a wide range of woodgrain finishes for our doors. Including high definition realistic wood grain finishes. The following colours are available:



Cedarwood PVC grained foil
Oregon PVC grained foil
Golden Oak PVC grained foil
Rustic Oak PVC grained foil
Sapeli PVC grained foil
Rosewood PVC grained foil
Mahogany PVC grained foil
Swamp Oak PVC grained foil

AnTeak HD PVC grained foil
Irish Oak HD PVC grained foil
Winchester HD PVC grained foil

We have these colours on display in our showrooms in Diss and Long Stratton in Norfolk. Alternatively all of our representatives have easy carry swatches, which our representatives carry with them so we can bring the colour to you.


We offer a wide range of colourful finishes for our PVC doors to suit any home. The following colours are available:

Classic Smooth White PVC
Smoot Magnolia Cream PVC
Cream PVC grained foil
Chartwell green or Sage Green PVC grained foil
Dark Green PVC grained foil
Steel Blue PVC grained foil
Dark Red PVC grained foil
Burgundy PVC grained foil
Grey 7038 PVC grained foil
Grey 7155 PVC grained foil
Basalt Grey PVC grained foil
Slate Grey PVC grained foil
Anthracite Grey PVC grained foil
Antracite Grey PVC Smooth foil
Black (Swatzbruan) PVC grained foil

We have these colours on display in our showrooms in Diss and Long Stratton in Norfolk. Alternatively all of our representatives have easy carry swatches, which our representatives carry with them so we can bring the colour to you

Energy Efficient Doors

At Stratton we understand the importance of a thermally efficient home. By reducing your fossil fuel usage our windows & doors will help you contribute towards saving the environment with the added bonus of saving you money on energy bills. Our windows & doors range from C rated double glazed all the way up to A++ rated high performance triple glazed windows achieving lower us values when compared with other windows.

What are U value’s

U values are the measurement of the effectiveness of a material to insulate in building. If the material has a high insulation value then the u value is low. Single glazed windows will typically achieve a 4.0 u value but with our double glazed windows & doors we can achieve a 1.3 u value and our triple glazed windows are reduced even further to 1.0.

C rated windows & doors

Our C rated doors are typically used by the trade as it achieve the building regulation u value requirement of 1.6. In our UPVC Liniar casement windows this is achieved using a 28mm double glazed sealed unit made with 4mm soft-coat glass, a aluminium spacer bar with an air filled cavity.

A rated Windows & Doors

Our A rated windows and doors are what we recommend for the majority of our domestic customers. The A rated windows and doors achieve a u value of 1.2 with an overall rating (once installed with the glass and frame) of 1.3. In our UPVC Liniar casement windows this requires a 4mm Low-e soft-coat glass, a warm edge swiss spacer and an insulating argon gas filled cavity. This will keep your home warm and cosy all year round.

A+ rated Windows & Doors

If you are looking to bring your home into the 21st century by boosting your homes energy efficiency then Stratton’s A + triple glazed windows and doors are recommended. Our Liniar triple glazed windows will achieve a u value of 1.0 which is almost 40% less than our C rated range and typically even higher when compared with your old windows. This is achieved using a 36mm triple glazed unit with 2 layers of 4mm Low-e soft-coat glass, 2 cavities filled with insulating argon gas and 2 warm edge spacer bars. This increased insulation value will encourage you to use less energy to heat your home

Door hardware options

We offer a wide range of furniture options throughout our door ranges. Whether it’s for your front composite door, back PVC door, sliding patio doors or a bi-fold door the furniture varies. We offer most options such as the standard lever handles, slam locking long bar handles, stylish sliding patio door handles, an antique effect door furniture for pvc and composite doors.

For more details on the furniture options for your door please go to the downloads section and download the relevant brochure. Alternatively please contact us to discuss the options available and a member of our staff will be more than happy to help.

Glass options

The glazing for your door is an important choice. The glass significantly contributes towards the style, security, thermal efficiency and acoustics of your door.


Glass Designs

We offer a wide range of glass designs for our including bevelled glass options, obscure glass, leaded patterns and Georgian grids.

Bevelled designs are typically used on front and back doors for an impressive entrance. Along with this Georgian or leaded grids can also look good on a front and back door. This grid style can be copied onto your patio or French doors too.

If you just want to keep it simple then we also offer a range of traditional patterned obscure glass options.

For more examples of the designs download either the corresponding door brochure, the Pilkington pattern glass brochure or for custom designs and inspiration download the Stratton decorative glass brochure all of which are available in our downloads section.

Safety & Security

All glass in doors needs to be a form of safety glass so we install toughened glass as standard. For added security laminated glass is an option. This breaks like your car windscreen deterring the most determined break in attempt. We also offer an acoustic laminated glass to reduce noise levels. This is ideal if you live next to a busy road or another form of high volume noise levels.

For more information regarding your specific door please download a brochure from our downloads section or contact our office where one of our staff will be more than happy to help you.

Thermal efficiency

Stratton’s modern UPVC, Aluminium and Composite doors are all thermally efficient in themselves. However, the glass pays a significant role in increasing this efficiency.

We offer double glazed doors and triple glazed doors. We recommend soft coat glass, warm edge spacer bars and an argon gas filled cavities to enhance the sealed units thermal performance.

For more information regarding your specific doors thermal efficiency please contact our office where one of our staff will be more than happy to help you

Security and locking

At Stratton we take our customers home security extremely seriously. This is why we offer a variety security of features to keep your home safe and secure. All Stratton doors come with multipoint shoot bolt and hook locking as standard making them a truly secure choice.


On top of this most of our doors come with a high security-locking cylinder as standard. These cylinders are anti bump, anti snap, anti drill and anti pick

Recommended by 5000+ Happy Homeowners Across Norfolk & East Anglia

“Very pleased with installation and top marks for your fitters. Very professional and pleasant.”
Mr Baxter - Diss, Norfolk
“Installation team were excellent, efficient and pleasant. They did a great Job on my windows.”
Mrs Harriers - Stowmarket, Suffolk
“I would like to thank you for the excellent job you made of our windows last week. Top class window fitting.”
Mr and Mrs Maslons - Eye, Norfolk
“My windows are excellent. No more drafts! I opted for A rated windows and have saved money on my energy bills.”
Mr Webb - Long Stratton, Norfolk
“We are very pleased with product. Also special thanks to the fittering team for a fabulous job. Great PVC windows. Thank you.”
Mr Langfords - Thetford, Norfolk
“Very Pleased with the windows installed by Stratton Glass & Windows. Fitter and customer service team were a pleasure to work with. Thank you to everyone concerned.”
Mr Hunt - Dickleburgh, Norfolk
“Stratton Glass have just finished installing our new windows. Now the envey of our road.”
Mr Broughton - Norwich
“Exellent Job Done, We are really pleased with everything.”

Mr Pearce - Norwich, Norfolk
“Excellent workmanship. Very impressed with my new PVC conservatory. Thanks Stratton.”
Mr Colding - Attleborough, Norfolk
“Extremely satisfied from my enquiry to your representative visiting, advisingand telling me about your products. 3 fitters were very friendly and tidy.”
Mrs Squires - Bungay, Suffolk
“Very pleased with our new conservatory it looks really good.”
Mr Ellis - Dereham, Norfolk
“Just a quick note to thank you very much for installing my high quality doors. Many thanks.”
Mr Howard - Saxmundham, Suffolk
“Very pleased! Hope to have more work done next year.”
Mr Sparrows - Tivetsall, Norfolk
“We had uPVC French doors fitted by Stratton a few years ago, after customer care is great! 10 year guarantee was a great investment.”
Mr Jones - Beccels, Suffolk
“Overall, an excellent service and would recommend.”
Mrs Clarke - Bury St Edmunds, Suffolk
“Extremely pleased with the courtesy and politeness of the fitter. Would recommend to anyone.”
Mr Browne - Rockland St Mary,Norfolk
Stratton Windows FENSA accredited company