Extensive green roofs

Extensive green roofs are lightweight roofs covered with less demanding vegetation such as sedum, herbs, aromatic plants and herbs that are specially adapted to extreme weather conditions on the roofs. Making this type of roofs, as well as their maintenance is not expensive procedure, and at the same time it is known that they are more durable than conventional roofs.

The benefits of extensive green roof are:

• aesthetic value - cheerful and fresh green appearance of the building, thus improving the living space
• reduce the burden on the drainage system - green roof slows runoff rainwater and reduce water pressure in drains during major downpours • suppression of occurrence of thermal bridge - as opposed to concrete roofs, green roofs extensive account could not convert the sun's energy to heat completely, but creates the cooling effect of the environment due to the conversion of water into steam
• protection of waterproofing systems - vegetation extensive green roof helps protect the waterproofing from the negative effects of the sun and rain, and thus a positive effect on the lifespan of the waterproofing system
• noise protection - vegetation extensive green roof helps to reduce noise and its negative impact on the living environment.

The system of extensive green roof:

The system of green roofs deliver complete, starting with the waterproofing of green roofs, through drainage systems to the vegetation.

The core of the system of extensive green roof:

ND 5+1 is ideal drainage layer below extensive green roof. Represents multi-purpose drainage system with a CE mark that has a high compressive strength. This product protects the vegetation from excessive water retention in the winter and during the rain, and in the summer dry period, together with ND SM-50 substrate panels (one contains cca 30 l/m² of water), provides a sufficient amount of water vegetation with its integrated water tank. It also protects the waterproofing of green roof of hydrostatic pressure and mechanical damage during and after installation.
The GreenLiner is a profile which we use to separate entities - vegetation on one side and pebble or paving on the other side. The profile achieves a perfectly straight line between zones, but in case you want to make a rounded line, it can be easily formed by removing the crossbars.
Izonet offers another system for extensive green roofs, in which we are presenting the waterproofing materials of the company Novaglass, some new products from Esha, together with drainage layers from Nophadrain. Take a look at the mentioned system - click here.
Our proposition drawings for this type of roof you can find in download zone below. If You want more detailed informations, please contact us.

Download zone