Pleated and cellular blinds look similar from the room — both are slim, crisp folds of fabric that stack neatly when raised. The difference is inside. A pleated blind is a single layer of folded fabric; a cellular blind is made of two or more layers joined to form honeycomb-shaped cells. Those cells trap air, which is why cellular blinds are often chosen where thermal comfort matters. How much difference that makes depends on the system, the fit and the window.
How each is made
Pleated blinds
A single layer of fabric, permanently creased into sharp folds. Pleated blinds are light, slim and come in a wide choice of fabrics, from sheer to light-filtering to blackout, depending on the range. They are a flexible choice for awkward shapes and frame-fitted systems.
Cellular blinds
Two layers of fabric (sometimes more) joined so that, seen from the side, they form a row of hexagonal cells, like a honeycomb. From the room, the blind looks like a neat pleated blind; from the edge, you can see the cells. Cellular blinds are sometimes called honeycomb blinds.
How the honeycomb helps comfort
The cells hold pockets of still air between the room and the glass. Still air is a poor conductor of heat, so the blind acts as an insulating layer when it is lowered. In practice, people often notice that a window feels less cold on a winter evening with a cellular blind down, and that the blind can soften the effect of strong sun in summer.
What we will not do is quote a percentage saving or a thermal value without tested data for the exact product. Thermal performance varies with the fabric, the cell construction, the glazing and — very importantly — how closely the blind fits the window.
Why fit matters as much as fabric
Air moves around gaps. A cellular blind hanging in a recess with clearance on every side will not perform as well as one that fits closely to the glass. That is one reason cellular blinds are popular in frame-fitted systems, where the blind sits within the window frame itself. See Perfect Fit vs Standard Blinds for how frame-fitted systems differ.
Light and blackout options
Both pleated and cellular blinds are available in light-filtering and blackout fabrics on selected ranges. A blackout cellular blind can darken a room well, particularly in a close-fitting system, but light may still enter around the edges. For the darkest result, compare specialist side-channel systems — see Blackout Blinds Explained.
Where each works well
| Situation | Pleated | Cellular |
|---|---|---|
| Soft, filtered daylight | Very good | Good |
| Thermal comfort | Limited | Stronger, depending on fit |
| Slim stack when raised | Very slim | Slim, a little deeper |
| Doors and frame-fitted systems | Good | Good |
| Conservatories and roof glazing | Good | Good, on suitable systems |
| Bedrooms | With blackout fabric | With blackout fabric |
Good applications
- Bedrooms — especially cellular blackout on a close-fitting system.
- Conservatories and roof glazing — slim, lightweight and suited to tensioned or guided systems where available.
- Doors — frame-mounted options avoid swinging or rattling blinds.
- Cold rooms — cellular can make large windows feel less chilly.
- No-drill fitting — on compatible frames, both types may be available in no-drill systems. See no-drill blinds.
Where we'd suggest something else
- If you want a softer, more decorative look, a Roman blind or curtains may suit the room better.
- If thermal comfort is the main goal, cellular is usually the better of the two — but lined curtains layered over a blind may do more.
- If the problem is summer overheating, external shading may be more effective. See Best Blinds for Heat & Glare.
Our pleated and cellular blinds page shows the systems we fit. If you would like to compare fabrics at your own window, book a free home survey.
Frequently asked questions
Are cellular blinds warmer than pleated blinds?
Generally, yes. The honeycomb cells trap air and act as an insulating layer. How much difference it makes depends on the system and how closely it fits.
Do cellular blinds reduce heating bills?
They can help a room feel more comfortable, but we do not quote savings without tested data for the specific product and window.
Can cellular blinds be blackout?
Yes, on selected ranges. Light may still enter around the edges unless the system is close-fitting or uses side channels.
Can pleated or cellular blinds go on roof windows?
Often, on systems designed for roof glazing. Suitability depends on the window. See roof window blinds.