Many buildings today are square roof top buildings, made of concrete.
The usage of the flat roof area on such buildings is very limited and often used to place ventilation outlets and AC units, leaving a large area of the roof unused. The left over area could be used for something nice, like a roof terrace with ballustrade, plants, wood deck etc.
-The only problem is the accessibility.

With a terrace enterance, or roof top enterance, you can access the roof from your livingroom. Once the roof gets accessible from inside the building, its not an so difficult to come up with ideas of how to use this new unused space.

A terrace enterance, or some times called a roof top enterance, is a skylight that retracts 75% of the covered area. With a push of a button the sliding glass roof opens up, giving you access to the roof top terrace.

Benefits with a roof-top enterance

• Easy access to the roof terrace with a klick of a button
• Automatically closes if it starts to rain, protecting your room
• Natural light source of sun light
• Ventilates the hot air on sunny days if opened up
• Adds value to the building with its unique and attractive design

Low cost 

The cost of installing a sliding glass roof as a retractable terrace enterance is very low. If compared with building a staircase of the outside of the building, the sliding terrace enterance is a winner every time.

Not only is it very cost effective, but it is a feature of the building that will be used often, and gives lots of joy to the people using it. Depending on size of the sliding terrace enterance, a price around 4000 eur is to be expected.