Criteria for growing media for roof top gardening.
Lightweight growing medium green roof.
These grow into the substrate as.
Substrate roll is a lightweight green roof substrate manufactured from long mineral wool fibres.
These generally require a 5 15cm 2 6in depth of growing medium that can consist mainly of lightweight inorganic materials such as perlite leca sand rockwool and crushed tiles or concrete.
Monday march 30 2020 susan parent in our previous article urban gardening a growing trend we discussed the basics of urban agriculture with a focus of growing plants on roof tops in this article we will discuss the ideal growing medium and properties required for roof top gardening.
Three types of extensive green roofs 1.
The thickness of the drainage layer will depend on the roof structure and the water storage capacity required depending on the.
All our products are created with our innovative proprietary product development process which is designed to ensure high quality soil that meets established industry.
Derived from 100 uk sourced materials.
For the best green roof medium the growing media should contain the following.
Types of green roofs.
3 drainage including filterfleece 11 20 mm.
Lightweight volcanic aggregate such as pumice or lava.
These materials are available throughout the west coast of north america.
Sedum mats have a base layer of polyester hessian or porous polythene depending on the supplier.
A 20mm layer of growing medium is laid and sedum seeds or cuttings are spread across it.
These aggregates make a good basis for a growing medium.
With a full line of standard rooflite soil products including regional and project specific blends you can trust us to have the perfect soil for your project.
Pumice is somewhat porous and is lighter than most aggregates.
It is simple to work with lightweight and offers guaranteed consistency throughout the green roof installation.
A green roof system is an extension of the existing roof which involves at a minimum high quality water proofing root repellent system drainage system filter cloth a lightweight growing medium and plants.
Lindum s green roof substrate provides good aeration and water holding properties and controlled fertility levels.
However the factors allowing for a lightweight roof can create a high stress environment for plant material.
It is a good growing medium and ensures good water absorption and tenacity.
In general the bulk of the water storage in a green roof buildup is in the growing medium.
Green roof systems may be modular with drainage layers filter cloth growing media and plants already prepared in movable often.
When saturated these layers can weigh in at more than 100kg per square metre or 20lbs per square foot.
The extensive green roof lightweight cost effective and probably the most popular of the green roofs.
Experts in green roof soil more than a decade of experience.
