Green Roof System For Shed

Check that your shed is strong enough to take such weight and remember that the walls will also play a large part in bearing the load.

Green roof system for shed.

You will also need to make sure that your shed s roof is waterproof. For a green roof installation that pitch should be at least inch per foot of run. 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 3x2 softwood timbers at 600mm 2 ctrs which spanned 1 2m 4 with an 18mm 3 4 plywood deck.

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. Before the plants go up a structural engineer should check to ensure that the roof can support the weight of the engineered growing medium and plants. For a first green shed roof i would recommend that you start off relatively small. And also so you can find out what works for you.

Step 1 check if it is load bearing. Even a flat roof should have some pitch so that it sheds water toward gutters. Ideally a green roof will go on a slope up to 10 but if it s on a slope over 20 make sure you have a frame to stop the green roof from slipping. Enough to support the roof build up which comprised.

When saturated these layers can weigh in at more than 100kg per square metre or 20lbs per square foot.