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Bifold Doors

Bi-fold Doors

Bi-Fold & Sliding Doors in Hertfordshire, Bedfordshire & Buckinghamshire

Bring more light, space, and style into your home with beautifully designed bifold and sliding doors from SDM Doors. Perfect for modern living, these sleek systems open up your space effortlessly — creating a seamless connection between your home and garden.

Transform Your Living Space

Whether you’re renovating, extending, or upgrading, bifold and sliding doors offer a contemporary way to maximise natural light and create an open, airy atmosphere. The precision-engineered panels fold or glide smoothly to one side, giving you a clear, unobstructed view of the outdoors.

Unlike traditional hinged designs, these doors make the most of every inch of available space, combining practicality with striking visual appeal. They’re ideal for patios, kitchens, extensions, or open-plan living areas.

SDM Doors provide installations of bi-fold and sliding doors in Hemel Hempstead and all of Hertfordshire, Bedfordshire, Buckinghamshire and the surrounding areas. We have a team that can help. Contact us today!

Various Bifold Door Types

SDM Doors supply and fit a number of sliding doors and bi-fold door varieties, some of which are listed below. All our bifold doors are of the highest quality and fitted to industry standard.

Bi-fold doors
Corner Bi-folds
Sliding doors
French Doors
Aluminium
uPVC

CORTIZO

Founded in 1972, Cortizo is a leading company in the manufacture and design of aluminium profiles for use in architecture and industry. Since its inception, the Spanish firm has grown to reach over 30 countries worldwide, producing over 71,000 tonnes of product annually.

Visit Cortizo

Customer Reviews

“

Friendly and professional service, despite the terrible weather the guys persevered through to get the job complete. Really pleased with the high quality bifold doors and the end result, highly recommended.
Bifold DoorsHertfordshire

“

Scott and Seb did a fantastic job installing our bifold doors. Charlotte in the office was quick to respond to any emails we sent. Will be using them again in the future and have already recommended them to some friends.
Bi-fold door installationHertfordshire

“

SDM Doors were fantastic. They installed our sliding doors for our new kitchen and they are the perfect addition to our new dining space.
New Sliding DoorsBedfordshire

Specifications at a Glance

Bifold Doors –

120kg per door leaf – providing for the largest openings
Panels of up to 3000mm high and up to 1200mm wide, without having to upgrade rolling hardware
Above ground bottom rollers
Engineering grade running rollers for a smooth and silky opening and closing operation
Thermal properties of down to 1.4 U W/m2K
Sightline 120mm or 133mm for maximum vision
PAS 24 Security rated
Tested to BS6375 Part 1 : 2009

Sliding Doors –

Maximum glazing thickness 34 mm
Opening possibilities Sliding of 2, 3, 4 & 6 sashes, Possibility of 1 rail (1 sash+ 1 fixed), Possibility of 3 rails, Possibility pocket solution 1, 2 & 4 sashes
Sections Frame 120 & 115 mm
Sash 50 mm
Profile thickness Balcony 1.5 mm
Polyamide strip length 20 & 25 mm
Maximum dimensions/sash Width (L) = 2,500 mm Height (H) =3,000mm
Maximum weight/sash 280 kg

ORDER PROCESS

Contact Us

Get in contact with us to discuss your requirements

Estimate

Receive an estimate or book a survey with one of our fitters

Quote

Receive a Final quotation and place your order

Order Complete

We will now agree an installation date with you

Job Completed

Complete the installation of your chosen product

Other Products & Services

Front Doors

We work closely with some of Britain’s top manufacturers of front doors so we can provide you with an unbeatable range of elegantly stylish yet secure products.

Garage Doors

We install every different type of garage door there is available and our workmanship is second to none. Our range includes both manual and electrically operated doors

Structural Alterations

If you are in that situation where you have a double garage that has two single doors but you always find it a tight squeeze to get the car then we can help. We have the facilities to transform your garage into a double garage with a double-width door.