• Sliding Patio Doors

    Spanning huge glazed areas with slim sightlines, Smart Visoglide patio doors are the robust yet aesthetically pleasing option.

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Adaptable doors for huge openings.

Smart Visoglide Plus patio doors are constructed from robust yet slim thermally broken profile. They are highly adaptable too, with both residential and commercial use. Used to create dynamic sliding door sets that maximise light and give stunning unimpeded views, Visoglide is simply suited to applications with large apertures.


They are designed to combine strength and performance while being visually striking. Utilising double and triple track outer frame options, many configurations using two, three, four and six panels can be specified to best suit your requirements. Bring light and space to any property. The option of lift and slide is now also available.


Smart Visoglide Plus sliding patio doors have a polyamide thermal break to reduce heat loss. Combined with double or triple glazing, you have a highly efficient doorway whether it is hot or cold outside.


The strength to weight ratio of aluminium allows for the largest of passageways while still having slim sightlines. This type of door provides you with the most natural light and panoramic views. Depending on the chosen confirguration, moveable panels can slide either way to the side, within an outerframe.

Energy-efficient glazing


Our aluminium patio doors can be supplied with energy efficient 1.1 U-value Staycool solar control double glazing which helps block UV rays and solar gain whilst retaining your valuable heat in the winter. Alternatively we can provide 1.2 U-value argon filled low e glass for installations where solar protection is not required.



Visoglide Colour Options


Visoglide can come in the same choice of over 200+ RAL colours and finishes. You can also have dual colour options, realistic wood effects, and metallic paint options. All paint finishes are produced to the highest standards.


The powder coatings that applied to aluminium doors are highly durable with a lasting surface finish. Smart aluminium products can also have a marine-grade finish. With proper use, they are guaranteed not to discolour or peel for years to come.

Design Details


The two floors between your home and garden could be one, with a flush or low threshold. Both access and weather performance can be enhanced with a rebated or sunken threshold.


All of the aluminium doors, including our Visofold bifolds and these sliding patios, are fitted with multi-point locking for high security.


Create your perfect patio doors with our range of different style handles, including pull handles, long and short poles, and regular sprung handles. There are premium brushed steel versions of each, for ultimate luxury style and marine-grade weather performance.


  • Designed for use as fixed lights and horizontal sliding doors internally beaded for domestic and all commercial applications.
  • 2, 3, 4 and 6 door panels available. All applications are internally glazed with square beads
  • Glazing seals: EPDM to DIN 7863, TV 110 NFP 85301, ISO 3994.
  • Weight limit 200Kg. Height limit 2550mm.
  • Profile width: Head, cill and jamb 116mm. Mullion 83mm and bi-parting stiles 158mm.
  • Depth of Frame: Two track 99mm and three track 155mm.
  • Glazing options from 4mm to 28mm.
  • Weather tested in accordance with BS6375 Pts 1 Tested to NEN-norm 5096.
  • Security tested by SKG Complies with Doc. L for thermal transmittance.
  • Weatherseals: Woolpile.


Tel: 0161 929 6275 | Email: sales@21staluminium.co.uk | Or click to