A green roof, or ‘Garden Roof,’ is a plant covered roof that provides an attractive and energy-saving alternative to conventional roofing.

From top to Bottom:

Vegetation - A wide variety of plants are suitable for garden roofs, and remember that fertilization may be required

Soils - Soil is engineered to be lightweight, to be less strain on the  structure.  It also supplies essential nutrients, water and oxygen.

Filter Fabric – A filter sheet prevents fine particles in the growing medium from being washed out of the soil and clogging the drains.

Drainage and Aeration -must be able to drain away excess moisture, while retaining enough water for plant growth.

Root Barrier - To prevent roots from penetrating the roofing membrane, a root barrier is installed.

Insulation– Expanded polystyrene foam insulation

Roofing Membrane - a waterproof membrane is installed, preferably PVC.

Structural Roof Deck Check - Most importantly, the roof structure must be designed to support the roof +wet soils + vegetation + rain + snow loads.

This roof will save the working life of your roof, keep your building cooler, and save energy.