How To Make A Sedum Roof On A Shed

You will need to build a tanalised wooden frame to your existing shed roof.

How to make a sedum roof on a shed.

The frame can be made by simply nailing the corners together or by using l brackets to form the corners. Whether you want to know how to make a green roof for your shed garage or house extension we hope to provide a clear pathway to accomplishing it. Fasten the truss by driving 8d finishing nails at an angle down through the board just above the birdsmouth notch and into the underlying wall plate. Now comes the growing medium which for a sedum roof should be at least 8cm 3in deep and for a roof of wildflowers herbs salad and strawberries at least 15cm 6in deep.

Build the frame so it provides a 3cm lip around the roof felt for the substrate and sedum blanket to be. It will also protect it from wind uplift. An all purpose soil less peat free potting mix is fine for growing herbs and other edibles but mix in plenty of perlite to both improve drainage and save on weight. This will protect the roof of the shed from any potential water damage.

1 build the tanalised wooden roof frame. Line the roof of your shed with a piece of plywood wrapped in waterproof butyl lining. This will stop the sedum matting from drying out at the edges. Use 3 nails for each side.

Attach the end rafters to the wall plates of your shed frame. Provided that the shed is strong enough and the roof is fully waterproofed already to build a sedum roof on a small shed requires limited diy skills. You will need two pieces of 2x4 timber the same length as the width of the roof and two pieces the same length as the depth of the roof minus 4 inches. The diy green roof guide aims to take most of the mystery out of how to build a small scale green roof.

Lift the wooden frame into place. The first job is to fix an edging to the roof. Using rot proof timber build a frame around the roof to contain the garden. Remember the plants at the top of the roof will receive less water than the plants at the bottom so make sure this is taken into consideration when planting or laying sedum.

An online guide to building your own small scale green roof.