# Comparing the systems.

> Glass curtains, sliding glass, insulated curtains, roofs and pergolas compared: light, insulation, sealing and opening. Which system suits your terrace.

## Which system should you choose?

To enclose a space and keep the view, choose glass curtains or frameless sliding glass. For winter, insulated curtains plus a fixed roof. For shade, a bioclimatic or tensioned fabric pergola. To cover the terrace, a fixed roof or a retractable one that opens in good weather. Every system is made to measure after we see the space.

## How do the systems differ?

Rated by how each system is built. Exact technical data is confirmed in the quote.

| System | Natural light | Thermal insulation | Sealing | Opening | Max. wind |
| --- | --- | --- | --- | --- | --- |
| Glass curtain | Very high | Low | Partial | Panels stack to one side | (to be confirmed) |
| Frameless sliding glass | Very high | Low | Partial | Sliding panels | (to be confirmed) |
| Insulated curtain | High | Medium to high | High | Panels stack to one side | (to be confirmed) |
| Fixed roof | Depends on material | Depends on material | High | Does not open | (to be confirmed) |
| Retractable roof | Depends on material | Depends on material | High when closed | Slides and retracts | (to be confirmed) |
| Bioclimatic pergola | Adjustable | Low | High with louvres closed | Adjustable louvres | (to be confirmed) |
| Tensioned fabric pergola | Filtered | Low | Depends on fabric | Retractable fabric | (to be confirmed) |

## What do you want to achieve?

- [I want the view](https://luneks.es/en/glass-curtains/): Glass curtains or frameless sliding glass: they enclose without cutting the scenery.
- [I want winter use](https://luneks.es/en/insulated-glass-curtains/): Insulated curtains and a fixed roof: the terrace becomes one more room.
- [I want shade](https://luneks.es/en/bioclimatic-pergola/): A bioclimatic or tensioned fabric pergola: adjustable shade without enclosing the sides.
- [I want a roof](https://luneks.es/en/retractable-roofs/): A fixed or retractable roof: rain protection and, with the retractable one, open sky in summer.

## Comparison: frequent questions

### Which is better, a bioclimatic pergola or an awning?

A bioclimatic pergola has aluminium louvres that turn to control sun and airflow and, when closed, keep the rain out. An awning or fabric gives shade with a lighter structure. It depends on whether you want a permanent roof or just shade.

### Which is better, a bioclimatic pergola or a glass roof?

A glass roof lets the light in and always keeps the rain out. A bioclimatic pergola lets you open the sky and adjust the shade. For a very sunny south-facing terrace the pergola usually fits better.

### What are the alternatives to glass curtains?

Frameless sliding glass when there is no side space to stack panels, and insulated curtains when you need insulation.

### Which system keeps out the cold?

Insulated double glazed curtains combined with a fixed roof. Single glass systems stop wind and rain but do not insulate.

### Why are there no prices in the table?

Every system is made to measure, and the price depends on the size, materials and finish. We give it in the quote, after seeing the space.

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https://luneks.es/en/system-comparison/