Minimal frame sliding glass doors with slim black profiles, providing a panoramic view of hills and coastline from a modern interior.

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

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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
Cortizo 4600 Plus Lift & Slide aluminium doors with black slim frames and large glass panels leading from a modern living space to a patio.
Large black-framed Cortizo 4600 Plus Lift & Slide aluminium door in a contemporary living room with red sofa, opening to a scenic hillside view.

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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Modern bedroom with large Cortizo 4700 sliding doors opening to a sea-view balcony.
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.

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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.

Large two-storey modern house with floor-to-ceiling Cortizo 4600 Plus Lift & Slide aluminium doors, overlooking a garden and waterfront view at sunset.
  • 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

    White aluminium frame colour finish sample.

    White aluminium frame colour finish sample.

    Matt white aluminium frame colour finish sample.

    Matt white aluminium frame colour finish sample.

    Matt brown aluminium frame colour finish sample.

    Matt brown aluminium frame colour finish sample.

    Jet black aluminium frame colour finish sample

    Jet black aluminium frame colour finish sample

    Grey aluminium frame colour finish sample.

    Grey aluminium frame colour finish sample.

    Gloss white aluminium frame colour finish sample.

    Gloss white aluminium frame colour finish sample.

    Gloss off white aluminium frame colour finish sample.

    Gloss off white aluminium frame colour finish sample.

    Dark red aluminium frame colour finish sample.

    Dark red aluminium frame colour finish sample.

    Dark grey aluminium frame colour finish sample.

    Dark grey aluminium frame colour finish sample.

    Dark green aluminium frame colour finish sample.

    Dark green aluminium frame colour finish sample.

    Dark brown aluminium frame colour finish sample.

    Dark brown aluminium frame colour finish sample.

    Dark blue aluminium frame colour finish sample.

    Dark blue aluminium frame colour finish sample.

    Cream aluminium frame colour finish sample.

    Cream aluminium frame colour finish sample.

    Black aluminium frame colour finish sample.

    Black aluminium frame colour finish sample.

    Anthracite grey aluminium frame colour finish sample.

    Anthracite grey aluminium frame colour finish sample.

    Airforce grey aluminium frame colour finish sample.

    Airforce grey aluminium frame colour finish sample.

    Glass Options

    Glass Options

    Unglazed aluminium window frame with angled top.

    Unglazed aluminium window frame with angled top.

    Standard self-clean glass panel with clear finish.

    Standard self-clean glass panel with clear finish.

    Standard toughened glass panel with clear finish.

    Standard toughened glass panel with clear finish.

    Clear solar control glass panel for improved comfort and energy efficiency.

    Clear solar control glass panel for improved comfort and energy efficiency.

    Self-cleaning glass panel designed to break down dirt and reduce cleaning frequency.

    Self-cleaning glass panel designed to break down dirt and reduce cleaning frequency.

    Self Clean Solar Control panel combining dirt-repelling and heat-reducing technology.

    Self Clean Solar Control panel combining dirt-repelling and heat-reducing technology.

    Satin obscure glass panel with smooth frosted finish.

    Satin obscure glass panel with smooth frosted finish.

    Laminated security glass panel with clear finish.

    Laminated security glass panel with clear finish.

    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.

    Large black-framed Cortizo 4600 Plus Lift & Slide aluminium door in a contemporary living room with red sofa, opening to a scenic hillside view.

    More products to consider

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