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Sliding Patio Doors Slough & Watford

Whether you’re a tradesperson or a homeowner, we supply and install in Slough & Watford, and further afield like Greater London and the South East. We have been an established business for over 20 years. Use our quoting engine for our prices, or contact our Slough team for more information.

Home / Sliding Patio Doors Slough & Watford

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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Aluminium sliding door frame with glass panels for modern home design.

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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Aluminium sliding doors providing seamless indoor-outdoor transition in a contemporary living space.
Aluminium sliding doors for seamless indoor-outdoor living.

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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Aluminium sliding doors in a modern bedroom with scenic views.
Elegant aluminium sliding doors with large glass panels.

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.

Aluminium sliding doors offering seamless indoor-outdoor connection in a contemporary home.

Technical Specifications

Technical Specifications

Cortizo 4600

  • 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

Cortizo COR Vision Plus

  • 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

Cortizo 4700

  • 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

Glass Options

All aluminium sliding patio doors can be specified with a range of glass types to meet thermal, acoustic, solar control, privacy, and safety requirements. Our team will recommend the optimal glazing specification for your project during the survey and quotation stage.

Colours & Finishes

Colours & Finishes

DTW aluminium aluminium sliding patio doors are available in any RAL colour to any BS/RAL specification, with powder coat applied under Qualicoat-certified conditions for consistent, durable results. Standard lead times apply to the most common specifications; bespoke or dual-colour finishes are available with extended lead times.

Standard Finish Options

  • Polyester Powder Coat: Full RAL colour range; smooth, fine texture, and matt texture options; Qualicoat Class 1 certified
  • Dual Colour: Different colours inside and outside on the same frame — common for heritage and period properties requiring white internally
  • Anodised: Natural silver, bronze, gold, and grey anodised finishes; Qualanod certified; increased surface hardness and corrosion resistance
  • Metallic & Special Effect: Metallics, wood-effect foils, and textured finishes available across most systems

Most Specified Colours

  • Anthracite Grey (RAL 7016) — the most popular contemporary choice for residential and commercial projects
  • Jet Black (RAL 9005) — high-contrast, premium aesthetic; popular for steel-look and heritage applications
  • Traffic White (RAL 9016) — clean modern white; frequently paired with anthracite grey as a dual-colour finish
  • Cream (RAL 9001) / Signal White (RAL 9003) — warm white options for period and conservation properties
  • Heritage Bronze / Umber (RAL 8025/8028) — specified for listed buildings and conservation area projects

Slimline sliding doors are often specified with a matt or textured finish in darker tones to maximise the contrast between frame and glass.

A physical colour sample service is available on request. DTW can also match existing powder coat colours using spectrophotometer analysis where replacement or extension work requires continuity with existing frames.

More products to consider

Cortizo logo FENSA logo BFRC logo Accreditation logo for Direct Trade Windows company. Constructionline Gold Member badge for trusted building industry standards. Close-up of a window with a focus on the frame and glass. Aluminium window with sleek design and modern finish.