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telescope in front of sliding slim doors

Sliding Patio Doors Slough & Watford

These designs frequently make bold statements while being able to save space. If you live in a home with a balcony or a significant amount of furniture, sliding patio doors can be an ideal solution for you. And with slim sightlines, the window frames don’t interfere with the view.

We don’t believe in cutting corners by bonding the glass on site. Instead our slimline sliding doors are bonded by London Architectural Glass to ensure maximum performance and durability throughout the lifespan of the door.

At Direct Trade, we try to offer the most up to date materials with modern looks. That’s why we choose to use aluminium. Homeowners can choose from multiple panes and multiple tracking systems for ultra wide apertures with sliding patio doors. Create a modern and elegant home with your next installation.

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Weatherproof & Energy Efficient

There’s a reason that we use aluminium so often, even when we love the steel looks of our other products. It’s not just that it’s lightweight and easy to use, though that’s important. It’s that aluminium is incredibly weatherproof. It doesn’t stain as wood does, and aluminium sliding patio doors stay colourfast for years to come.

Unlike other materials, it has a high melting point so that it won’t warp. And polyamide thermal breaks mean that it’s thermally ‘broken’ to reduce heat transfer out of your home. Aluminium and polyamide have a lot of the same properties, which is why they work so well together.

Keep in mind that aluminium offers the best U-values on the market, and our slimline sliding doors have U-values of 1.3 W/m2K. And with your sliding patio doors, aluminium offers better energy efficiency. You’ll reduce draughts and dampness in your home when you choose aluminium.

Talk to our team about our steel alternatives for entry doorsbifold doors, and internal screens. And if you’re a tradesperson looking for a patio door supplier, get in contact today.

Clean and minimalist seating area featuring slimline sliding doors

Trusted manufacturers since 2000

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Made in the UK

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Bespoke Complex Products Fabricated

Cortizo COR Vision sliding door

The COR Vision sliding door from Cortizo is a super slender aluminium system offering outstanding versatility and creating a high-end sliding door solution for any property. Frames can also be embedded with the surrounding walls, maximising the amount of glass on display.

  • U-value of 1.3 W/m²K
  • 20mm interlock profile
  • 30mm maximum glazing thickness
  • Up to 6 sashes and 3 rails
  • Polyamide strip length from 16 to 24mm
  • Maximum sash width of 2500mm and height of 3000mm
  • Maximum sash weight of 320kg
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COR Vision Sliding cross section
Patio area with sliding doors
Life and slide Cortizo doors

Cortizo 4600 lift and slide door

Cortizo’s 4600 lift and slide door completely transforms the look of any space, while exhibiting some of the best thermal efficiency on the market. The system is perfect for enclosing large spaces while providing maximum light, with an ultra-smooth opening action and perfect sash sliding over a stainless steel track.

  • U-value of 0.9 W/m²K
  • 110mm standard section and minimalist solution of 50mm
  • Possibility of large sash dimensions ideal for enclosing large spaces
  • Maximum glazing thickness of 55mm
  • Maximum sash width of 3300mm and height of 3300mm
  • Maximum sash weight of 400kg
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Cortizo 4700 sliding door

The 4700 sliding door system offers superb contemporary styling and robustness while also maximising natural light. Modern and practical, this system creates a seamless transition between indoor and outdoor spaces while delivering energy efficiency and thermal retention.

  • U-value of 1.1 W/m²K
  • Stainless steel rails allow for ultra-smooth sliding
  • Maximum glazing thickness of 34mm
  • 47mm interlock profile
  • Maximum sash width of 2500mm and height of 3000mm
  • Maximum sash weight of 280kg
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4700 sliding Cortizo doors
4700 Sliding doors leading to blue deck chairs in sun lounging area

A good lock is not enough

Our Gold Standard
We use Ultion locks as standard, ensuring our customers can offer the highest security on the market.

Guaranteed
Ultion supplies a powerful lock, with an equally powerful anti-snap guarantee. Should your customer’s lock break by snapping, Ultion will refund them £2000.

State of the Art
Ultion locks have 11 pins, creating just under 300k lock combinations, making it virtually impervious to picking.

Accredited
Ultion locks are Kitemark approved, and Secured by Design, tested to rigorous police standards.

About Us

Sliding Patio Doors Prices Slough & Watford

If you’re looking to install sliding patio doors, look no further. Our helpful quoting tool helps you with your financial planning. That way, you can know prices and budget ahead of time. Use our quoting engine to find designs, colours and more. We install sliding patio doors throughout the South East.

Modern building with lift and slide doors Cortizo
  • Cortizo 4600
  • Cortizo COR Vision
  • Cortizo 4700
  • Colours
  • Glass Options
  • Hardware Options
  • Downloads
  • Benefits
  • Cortizo 4600

    Technical Specification

    • Maximum glazing thickness
      55 mm
    • Opening possibilities
      Sliding of 2, 3, 4 & 6 sashes
      Possibility of 1 rail (1 sash + 1 fixed light)
      & 3 rails
    • Sections
      Frame 160.6 mm - 3 rails 251 mm
      Sash 70 mm
    • Profile thickness
      Door 2.0 mm
    • Polyamide strip length
      Frame 35 mm / Sash 24 mm
    • Maximum dimensions/sash
      Width (L) = 3,300 mm
      Height (H) = 3,300 mm
    • Maximum weight/sash
      400 kg

    Please consult regarding maximum weight and dimensions for other opening types

    Finishes
    Possibility of dual colour systems
    Colour powder coating (RAL, mottled and rough)
    Wood effect powder coating
    Anti-bacterial powder coating
    Anodised

    4600 Lift & Slide HI cross section

    Cortizo COR Vision

    Technical Specification

    • Maximum glazing thickness
      30 mm
    • Opening possibilities
      Up to 6 sashes
      Up to 3 rails
      1 sash + 1 fixed / 2 sashes + 1 fixed
      Pocket solution possibility in 1, 2, 3 & 4 sashes
      Possibility of interior and exterior corner at 90º without mullion
    • Sections
      Frame – 116 mm - 182 mm 3 rails
      Sash – 37 mm
    • Profile thickness
      Door 1.7 mm
    • Polyamide strip length
      From 16 to 24 mm
    • Maximum dimensions/sash
      Width (L) = 2,500 mm
      Height (H) = 3,000 mm
    • Maximum weight/sash
      320 kg

    Please consult regarding maximum weight and dimensions for other opening types

    Finishes
    Possibility of dual colour systems
    Colour powder coating (RAL, mottled and rough)
    Wood effect powder coating
    Anti-bacterial powder coating
    Anodised

    COR Vision Sliding cross section

    Cortizo 4700

    Technical Specification

    • 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) = 3,000 mm
    • Maximum weight/sash
      280 kg

    Please consult regarding maximum weight and dimensions for other opening types

    Finishes
    Possibility of dual colour systems
    Colour powder coating (RAL, mottled and rough)
    Wood effect powder coating
    Anti-bacterial powder coating
    Anodised

    4700 Sliding cross profile

    Colours

    Colours

    Pure White RAL-9010

    Pure White RAL-9010

    Matt White

    Matt White

    Matt Brown

    Matt Brown

    Jet Black RAL-9005

    Jet Black RAL-9005

    Grey

    Grey

    Gloss White

    Gloss White

    Gloss Off White

    Gloss Off White

    Dark Red

    Dark Red

    Dark Grey

    Dark Grey

    Dark Green

    Dark Green

    Dark Brown

    Dark Brown

    Dark Blue

    Dark Blue

    Cream

    Cream

    Black

    Black

    Anthracite Grey RAL-7016

    Anthracite Grey RAL-7016

    Airforce Grey

    Airforce Grey

    Glass Options

    Glass Options

    Unglazed

    Unglazed

    Standard Self Clean

    Standard Self Clean

    Standard Tough

    Standard Tough

    Solar Control

    Solar Control

    Self Cleaning

    Self Cleaning

    Self Clean Solar Control

    Self Clean Solar Control

    Satin Obscure

    Satin Obscure

    Laminated Security

    Laminated Security

    Hardware Options

    Hardware Options

    Black 9005

    Black 9005

    Custom ral

    Custom ral

    Dark silver

    Dark silver

    Grey 7016

    Grey 7016

    Light silver

    Light silver

    White 9010

    White 9010

    Downloads

    Gallery

    Benefits

    Benefits

    Lowered Thresholds — Installers know that government standards continue to rise for accessibility standards and those with low mobility. But lowered thresholds are helpful to everyone, considering that they reduce tripping hazards. Raise the home value by complying with government standards and anticipating future needs.

    Reduced Space — Sliding patio doors are the perfect option for homes with balconies or gardens with reduced space. They fit within the frame rather than protruding from the entry. This can help those who have furniture or other obstacles that might hinder swing doors.

    Multi Track Options — The multi track options are helpful for those who plan on having multiple sashes with large apertures. It can help open and close your sliding patio doors with ease and efficiency, ensuring that these doors don’t catch.

    Sleek Looks — Aluminium profiles with slim sightlines look elegant in any home. Plus, aluminium improves the energy efficiency of your sliding patio doors. With polyamide thermal breaks to help ‘break’ heat transfer outside of the home, your home can afford stunning views and stay warm all year round.

    Natural Light — Installing sliding patio doors is a great way to bring natural light into the home. And improving natural light is a great way to improve the moods of every homeowner. Bring light into those dark places when you install sliding patio doors.

    Beautiful Views — Whether you’re a homeowner or in the trade, you can create beautiful views when installing sliding patio doors. They work well for both garden or city views and give homes more ambience. Most of our customers appreciate being able to see their gardens throughout the year.

    Supply to Trade — Direct Trade fabricates and supplies aluminium sliding patio doors to installers throughout the South East. We have in house manufacturing facilities and highly automated software, in order to lower the lead times between orders and your installation. You can get in touch with our Slough team for more information.

    Life and slide Cortizo doors
    Close up view of steel look windows

    Delighted Customers Share Their Experiences

    At Direct Trade Windows, our commitment to excellence is reflected in our exceptional customer satisfaction.
    We take great pride in our impressive 4.9 rating on Google, a testament to the unparalleled quality and service we offer.

    Check Out Our Google Reviews

    We had been severely let down by a previous supplier, but when we turned to Direct Trade Windows for help, we hit the jackpot. Helping us to transform a residential development in Hersham, they supplied us with high-quality, ultra-slim Cortizo sliding doors, complete with the bespoke sliding options that we needed. Our requirements were very specific and not readily available on the market, but Direct Trade Windows really went the extra mile to help us out, coming through with quality products and excellent service. We will definitely be using their services again.

    Park Lane Developments

    2022

    Nothing but praise for this outfit. It was a pleasure to work with them. It was a nerve-wracking undertaking for us, the biggest single expense to fit three large window/french door combos in our extension, yet the team made it a relatively relaxing experience with their professionalism and good humour. Thank you all so much for everything you and the whole team have done to get from the initial sale (well done Hash!) to the fun visit we made to the workshop, to the design and its multiple iterations (thank you Taz!) and finally to the installation. Thoroughly recommended.

    Eloise Price - 2022

    Direct Trade recently replaced a large, faulty sky light. They said they’d take 3 hours, they took two. They did a fantastic job, there was absolutely NO dust or mess, at all. I was amazed… thought I’d be clearing up dust for days! I also didn’t need to get the recess re-plastered or painted – bonus!

    I highly recommend Direct Trade. They are a professional and friendly service delivering a high quality product.

    Vicky Steele - 2022

    I met with Taz at the warehouse to see some examples of the glazing and from the beginning he was extremely professional, personable and helpful. We ordered crittal style windows and doors, a Juliet door, 3 other windows and roof lights and every one of them was excellent quality, secure and well made. I highly recommend Taz and his team at Direct Trade Windows!

    Nick Robinson - 2021

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    More products to consider

    NFA23 Finalist FENSA logo BFRC logo Yale logo Cortizo logo Mila logo Smart aluminium logo Ultion lock logo