Build dog shed with green roof

Type of activity: 
Agriculture

As we recently got a little puppy, and it has no real shelter yet, we are planning to make a dog shed in front of the house. As we want to start working with green roofs soon, we will use this technique for the shed, so we can get a first experience. At one edge we will use a plexiglass bord so the structure of the little roof remains visible.

For the floor we have the leftovers of our pine flooring from the bedroom, so it will become a realy VIP dog shed : ) (or was that VID)

Estimated duration: 
1-2 days
Materials available: 
Pallet, PE plastic sheeting, pine flooring
Still needed: 
a material for the filter layer, and one for the drainage layer
urgency: 
3