# Roof Window Venetian Blind
Source: https://www.fenetresystems.com/en/roof-window-venetian-blind/

# Roof Window Venetian Blind

Venetian blind on the roof window: an honest limit — the free slat does not work on the horizontal plane; alternatives.

## Roof Window Analysis

On the roof window the venetian’s limit is clear: on the horizontal plane the freely hanging slat is functionless — gravity works not for the fabric but against the slats and they cannot position properly. In this space the right system is the [tensioned cellular or a special roof orde](https://www.fenetresystems.com/en/ceiling-duette-blind/)r; the venetian is evaluated only on a near-vertical angled window. The limit is not exaggerated and the right alternative is written openly.

### Horizontal Limit

On horizontal glass the free slat cannot position properly; the product does not work on this plane.

### Right Alternative

The tensioned cellular or a special roof order works on the horizontal.

### Limit Split

On a near-vertical angled window the venetian is evaluated; not on the full horizontal.

### Honesty

No product is advised on the unsuitable plane; the page’s function is the right routing.

## Why the Venetian Does Not Work on the Horizontal

The roof window is a horizontal plane: the freely hanging slat separates from the glass with gravity and cannot position properly. The venetian is not functional on this plane — this is the page’s main answer.

The right solution is the tensioned cellular or a special roof order: the fabric is held inside the channel and works flat on the horizontal too.

The limit information is the page’s value: not advising the wrong product is also a service to the user; on a near-vertical angled window the venetian is evaluated again.

Application Notes

## Mounting & Selection for Roof Window

### Plane

Does not work on horizontal glass; evaluated at a near-vertical angle.

### Alternative

The tensioned cellular or a special roof order is the right class.

### Angle

The plane angle gives the suitability decision.

### Honesty

No product is advised on the unsuitable plane.

Explore

## Related Pages

Roof Window — horizontal limit, right alternative, limit split, honesty.

[Venetian Blinds for Geometric and Sloped Windows](https://www.fenetresystems.com/en/venetian-blinds-for-geometric-sloped-windows/) [Venetian Blinds](https://www.fenetresystems.com/en/venetian-blinds/)

## Plane Angle

The horizontal-or-angled information decides the right system.

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