Green Roof and planter boxPlant sedum vegetation in broken porous lava stone to green roof as per the detail drawing and specification.(Rate only item)Plant sedum vegetation in broken porous lava stone to planter box as per the detail drawing and specification.(Rate only item)Construct 200mm thick broken porous lava (black ash) stone mixed with 5%-10% compost on felt membrane for green roof vegetation as per the detail drawing and specification. Price shall include all the fixing accessoris.(Rate only item)Construct 200mm thick broken porous lava (black ash) stone mixed with 5%-10% compost on felt membrane for planter box vegetation as per the detail drawing and specification. Price shall include all the fixing accessoris.(Rate only item)Supply and fix 10mm thick felt or geotextile membrane under vegetation roof as per the detail drawing and specification. Price shall include all the fixing accessories. (Rate only item)Supply and fix 10mm thick felt or geotextile membrane under vegetation planter box as per the detail drawing and specification. Price shall include all the fixing accessories.(Rate only item)