1. 
   Sub-roof
   As the term suggests, a roof covering an offshoot from the main body of a building.
   Found op http://www.maintainyourchurch.org.uk/ToolkitModules/Toolkit1Glossary/tabid/
   
   
2. 
   Subtropical climate vegetated roof
   A subtropical climate vegetated roof (SCV roof) is a type of green building practice that employs a planted soil media installed above a waterproof roof deck to obtain environmental benefits and address sustainability concerns, similar to traditional green roofs located in northern continental Unit...
   Found op http://en.wikipedia.org/wiki/Subtropical_climate_vegetated_roof
   
   

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