What are integral blinds? Everything you need to know

Integral blinds are a modern window treatment where the blinds are sealed inside the glazing of a double- or triple-glazed unit. In other words, the blinds sit between the two panes of glass instead of hanging outside the window. This creates a cleaner finish, protects the blind from dust and keeps the room side of the glass easier to wipe down.

What are integral blinds?

Sleek, built-in shading solution that doesn’t require any external blinds or curtains. The blind slats (often a Venetian-style mini blind) are completely encapsulated within the insulated glass unit, protected from dust and damage.

An example of integral blinds sealed inside double-glazed window units. The blinds are built into the window panels, providing a clean look and protected placement behind the glass.

Despite being enclosed between panes, integral blinds are fully operable. Manufacturers achieve this through clever mechanisms:

Manual integral blinds typically use a magnetic slider or cord that runs along the frame to tilt or raise the slats, while motorised integral blinds.

What are the benefits of integral blinds?

Integral blinds offer several practical and aesthetic benefits compared to conventional blinds or curtains. Here are some of the key advantages of choosing integral blinds for your windows or doors:

Thermal performance

Because the blinds sit within an insulated glass unit, they can help with heat control. When closed, the blinds filter sunlight and reduce glare, which keeps interiors cooler in summer; when open, they allow in warmth and light. By controlling light and heat in this way, integral blinds can contribute to better energy efficiency (for example, reducing overheating in a sunny room or helping retain heat at night). In fact, having the blinds between glass panes means less heat transfer compared to external window dressings.

Privacy and light control

Integral blinds provide on-demand privacy without the need for additional window coverings.

They’re fitted between the panes of glass, providing privacy and light control at the twist of a knob or press of a button, with no external blinds or curtains needed.

When should you specify integral blinds?

The decision to include integral blinds is best made early in your project planning or window selection process.

Because the blinds are actually part of the sealed glass unit, you typically need to order windows or doors with the integral blinds built in from the start. In practice, choose integral blinds before the glass units are manufactured.

For new builds, extensions, or major renovations, it’s wise to decide up front if you want integral blinds. Builders and architects increasingly plan for integral blinds in projects – especially in modern, energy-efficient homes where controlling light and heat is important. By specifying the blinds early, the window supplier (like us) can ensure the units are made to accommodate the blinds and any necessary features (for example, slightly thicker glass units or built-in power supply for motorised blinds). Early specification also avoids the need for retrofitting later, which can be more costly or limited in feasibility.

Early planning is especially important if you want motorised integral blinds.

What design choices are available?

One might think built-in blinds come in a one-size-fits-all format, but there is actually a good degree of customization available. We and other integral blind suppliers offer several design choices so you can tailor the blinds to your needs and style:

Glazing types

Integral blinds can be incorporated into different glazing setups. Most commonly, they are sealed inside double-glazed units, but you can also have them in triple-glazed windows or doors if extra insulation is desired. The insulated glass unit with blinds will use the same high-performance glass options as any modern window – for example, you can specify low-E (low-emissivity) glass coatings, argon gas filling, laminated safety glass, or acoustic glass as needed. The presence of the blind doesn’t prevent using these glass upgrades; in fact, many integral blind units come with warm-edge spacers and gas filling to maintain excellent thermal performance. In summary, you don’t have to sacrifice glass specifications – you can choose the glass type (double or triple, clear or tinted, etc.) that best suits your project, and have the blinds built into that unit.

Blind colours & styles

You aren’t limited to just basic white or grey (though those are popular neutral choices).

Integral blinds come in a range of slat colours.

Can integral blinds be retrofitted?

If you already have existing double-glazed windows or doors, you might wonder whether you can add integral blinds to them without replacing the whole window.

The reality is that integral blinds are only available as part of a sealed glass unit, so retrofitting them means swapping out your old glass for new glass (with the blinds inside). You cannot simply insert blinds into an existing sealed window – the unit must be manufactured with the blind sealed inside in a controlled factory environment. Attempting to open up a sealed unit to add blinds would break the glass seal (ruining insulation and causing condensation issues), so that’s not a viable option.

However, you can retrofit integral blinds by replacing the glazing units in your current frames. For example, if you have sound window frames that you don’t want to fully replace, a professional installer can measure your frames and order new insulated glass units that include integral blinds to fit those frames. We often do this as part of our replacement glass services – we can keep your existing window frames and just install new double-glazed panels that have integral blinds built-in. This approach is faster and cheaper than replacing the entire window, and it gives you the benefit of integral blinds provided your frames are compatible. It’s important to note that the new sealed units must match the dimensions and specifications (thickness, safety glass, etc.) required by your frames. In many cases this is straightforward, but extremely old or thin frames might not accommodate the slightly thicker units that integral blinds sometimes require. A survey by the installer will determine feasibility.

In essence, integral blinds can be added to existing windows and doors only by replacing the sealed glass units, not by modifying the old glass.