system installation
.root barrier is loose laid
.drainage layer is rolled out(geotextile layer facing up)
.water retention layer is rooled out (either side facing up)
.pre-cultivated mat is laid out
.place gravel on open spaces over drainage layer between edges of roof and bee-hive drains
![IMG_6621.JPG](//g.co188.com/img/topics/new_topics/images/blank.gif)
![IMG_6622.JPG](//g.co188.com/img/topics/new_topics/images/blank.gif)
全部回复(1 )
只看楼主 我来说两句 抢板凳