Green Roof Soil Composition

The main advantage to this type of soil on a green roof is its light weight and ease of handling as it comes pre packaged in bales from a manufacturer.

Green roof soil composition. This is especially true of intensive green roofs which can have soil that is two feet deep or more. Availability of basic nutrients. To support the soil of the growth medium and to protect the drainage layer a permeable filter is required in the green roof composition. Both commercial potting and green roof mixes use organic e g compost peat and mineral e g vermiculite perlite soilless materials and both have been used in the studies on rooftop.

The carbon is stored in the plant tissue and the soil substrate through plant litter and root exudates. One important item to design for is an increased structural load. The liveroof network is dedicated to using sound green roofing principles including proper interface with the waterproofing system soil composition and specific plant options for various soil depths climates and rooftop microclimates. The other matter to consider is runoff.

Balanced water permeability and retention. Recently it was thought that the best soils for green roofs were engineered soils or pasteurized peat based soilless media with little emphasis on adapting it to local needs. An additional environmental benefit of greens roofs is the ability to sequester carbon. Carbon is the main component of plant matter and is naturally absorbed by plant tissue.

This layer is usually made from a geotextile a fabric that prevents fine particles in the growing medium to enter and clog the drain at the same time that it acts as a capillary wick 9. The sizes and proportions of small particles and their packing inside the large pores make a major contribution to the amount of water the mix can retain. Stable structure for anchorage of plants root systems. Experts in green roof soil more than a decade of experience.

All our products are created with our innovative proprietary product development process which is designed to ensure high quality soil that meets established industry. The following are some of the characteristics of the soil for the green roof. When plant nutrients stay in the soil they re fine. Possess chemical physical and biological features necessary for supporting the vegetation.

Green roof growing substrates are designed to have a mix of large and medium sized particles to create an open porous structure inside which smaller particles can fit.