Roof garden tips

Now it is spring and you may want to prepare a green roof. You know roof garden does not mean a garden on the roof only. It may be top of an underground garage or top of a underground structure.

An important thing is not to forget the drainage core of the drainage sheets or layers with a nonwoven (may be woven but non woven is cheaper) filter fabric.

The ready made drainage products already have filter on them. But you have to wrap filter on the drainage core. Otherwise the soil, gravel or etc may go inside the drainage layer and block the drainage or at least decrease the amount of water to be drained.

Drainage sheets are used to remove excess water.

On the drainage layers you may use a water retention layer depending on where you live.

For more information on green roof solutions check our roof garden section for all posts of this subject.

Capping system for waste areas

Instead of using traditional (mineral) products if we use geosynthetics materials for the capping of waste disposal areas we may have extra storage. So, to use geosynthetics has economic advantages against the traditional products. Also it is more easy to use geosynthetics (geotextiles, geomembranes, geogrids, geocomposites, geomats).

On the picture above you can see a simple comparison of “traditional” mineral- and “geosynthetic” capping of landfills.

As seen the mineral seal and drainage section have much thickness than the geosynthetics drainage and geomembrane seals.

Geocomposite drainage materials are used both for gas and water drainage.