Green Shed Roof Drainage

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.

Green shed roof drainage.

This guide shows you how to fit a green roof to a shed. This was not flat at all but had a fall of 75mm 3 over its length of 2 4m 8. This gave a 1 40 slope which was enough to encourage water to drain. 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.

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. The slope of a green shed roof needs to be a balance between being too steep or too shallow. Make a green roof on a shed. A shed that is located in an area that drains poorly can have problems including muddy ground or the shed sinking into eroding soil.

Make a green roof on a shed. 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. Building a green roof on your shed is a way to add interest to the shed and produce a new area to cultivate. Step 1 check if it is load bearing.

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. 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. For this shed i used nominally flat roof. How to fit a green roof.

On modern lightweight green roofs plastic drainage sheets or boards are the preferred drainage materials. A shallow roof pitch wont allow water to drain away. Lay it over the gravel and attach to the frame using tacks. There are some things you need to check before building but the job is not very difficult.

Grs drainage products typically fit into a green roof system above the grs root barrier and below the grs filter fabric. 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. Step 5 cut a piece of weed matting large enough to cover the roof and the inside of the frame.

The green roof guide gives all the details about to drain a green roof laterally. When saturated these layers can weigh in at more than 100kg per square metre or 20lbs per square foot. However there is a need to get what rain that is not stored of the roof.