Double Sliding Windows
Two sashes that slide horizontally within the frame, opening independently for precise ventilation control.
Get an instant quoteMaximum airflow, minimum footprint
Single-slider windows give you half the ventilation area. A double slider gives you the full width of the opening when you need it, because both sashes travel independently. Open one side, the other, or both at once to tune airflow to the conditions outside.
Neither sash projects inward or outward when open. That makes these windows the right choice for rooms that face a walkway, patio, or garden where a projecting casement or awning window would be an obstruction. Their low-profile frame also pairs naturally with aluminium sliding doors on the same elevation, maintaining a consistent architectural line across the facade.
The right window for most rooms in the house
Double sliding windows suit bedrooms, kitchens, bathrooms, and living rooms equally well. Their non-projecting operation and slim profile mean they fit comfortably into almost any orientation without compromising the space around them.
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Bedrooms Quiet operation, adjustable airflow, and a clean sight-line that does not interrupt the view from inside.
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Kitchens and bathrooms Where ventilation matters most and wall space is limited, horizontal sliders make full use of the opening without reaching into the room.
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Living rooms facing a patio or garden No sash swings outward to block the walkway. Combined with frameless glass solutions, they create a seamless indoor-outdoor flow.
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Street-facing elevations Pairing them with double glazing reduces road noise without changing their exterior appearance.
Four things that set them apart
Enhanced Ventilation
Both sashes slide independently. Open one, the other, or both at once to tune airflow to the conditions. A single-slider gives you half the opening; a double slider gives you the full width when you need it.
Durability
Aluminium does not warp, swell, or rot. Our frames handle coastal humidity and UV exposure without deteriorating. Powder-coated for a long-lasting colour finish that needs little more than an occasional wipe-down.
Aesthetic Appeal
A modern, sleek profile that suits contemporary and transitional architecture alike. The slim sightlines maximise glass area and allow generous natural light into the room.
Single or Double Glazed
Our frames accept both single and double glazing. Double glazing adds insulation that reduces heat transfer and outside noise, worth considering for street-facing rooms or air-conditioned homes. Our team can walk you through the cost difference for your situation.
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Standard sizes and custom openings
Inso Aluminium manufactures double sliding windows in the most common standard sizes. Our team can also produce custom widths and heights to suit any opening, so an unusual reveal or a non-standard wall thickness is not a problem.
Standard frame depths accommodate single glazing as well as double glazing for improved thermal and acoustic performance. See our aluminium windows range for reference dimensions, or request a custom quote for non-standard openings.
If you are working with specific dimension constraints, our team will advise on the closest standard option or specify a bespoke frame at no additional design charge.
Choosing between single and double glazing
Our double sliding window frames are engineered to accept both single and double glazing. The right choice depends on your room orientation, climate zone, and whether your home has air conditioning. Our team can walk you through the cost difference and likely return for your specific situation.
Single Glazing
A proven, cost-effective solution suitable for most interior-facing rooms and sheltered elevations. Single glazed frames are lighter and simpler to operate, and they remain the most commonly specified option for residential projects across South Africa.
Double Glazing
Adds a layer of insulation that reduces heat transfer and outside noise. Worth considering for street-facing rooms, homes with air conditioning, or locations with high ambient noise. Our team will quote both options so you can weigh the cost difference against the likely return.
Precision installation, from measurement to handover
Inso's expert installation team manages the full process. We prioritise precision at every stage because a double sliding window performs only as well as the frame is set. A frame installed slightly out of square will not slide cleanly, and we do not leave a site until the sashes operate correctly.
Our service covers residential upgrades, new builds, and light commercial projects. If you are working with an architect or project manager, we provide the technical documentation and product certification they need. See our full range of installation and support services.
Ready to specify your double sliding windows?
Use our online quotation calculator for an immediate cost estimate, or contact our team directly to discuss custom sizes, glazing options, and installation. It has never been easier to get started.
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