Green Shed Roof Drainage

Green roofs are made up of several layers typically a waterproof root barrier layer to protect the roof a drainage layer water retention mat then the growing medium and vegetation.

Green shed roof drainage.

This improves the drainage of the green roof which helps reduce soil erosion and aerate plants. Building a drainage system in the ground near the shed can help remove excess. This was not flat at all but had a fall of 75mm 3 over its length of 2 4m 8. Lay it over the gravel and attach to the frame using tacks.

There are a number of factors to consider before adding a green roof to your shed not the least of which is whether your shed will be strong enough. For plants to flourish on a green roof they will need moisture and drainage which means soil and a sturdy framework to keep it in place. How to fit a green roof. This can be especially bad if the shed doesn t have a gutter system and rain water flows directly off the roof and onto the ground.

There are some things you need to check before building but the job is not very difficult. A shallow roof pitch wont allow water to drain away. This gave a 1 40 slope which was enough to encourage water to drain. However there is a need to get what rain that is not stored of the roof.

Step 1 check if it is load bearing. Plastic drainage layers may be rigid open mesh structures that allow unrestricted drainage of water or they may have a cup style egg carton design that enables water to be stored at the base of the profile see image below. Depending on regional precipitation rates and the water retention goals for your specific project green roof solutions has a full range of products to meet your needs. How to vertical drain a green roof.

Make a green roof on a shed. If you want to fit a green roof to your house or garage it is always recommended that you take specialist advice as drainage and specific protective layers may be required that are usually out of the skills of most common gardeners. For this shed i used nominally flat roof. The green roof guide gives all the details about to drain a green roof laterally.

Make a green roof on a shed. On modern lightweight green roofs plastic drainage sheets or boards are the preferred drainage materials. A shed that is located in an area that drains poorly can have problems including muddy ground or the shed sinking into eroding soil. This guide shows you how to fit a green roof to a shed.

You are going to be adding significant extra weight onto the shed roof so you need to know that the structure is strong enough to support it. Grs drainage products typically fit into a green roof system above the grs root barrier and below the grs filter fabric. The slope of a green shed roof needs to be a balance between being too steep or too shallow.