[Cob] roofing

[willy at sdf.lonestar.org]

What about a living roof.  I can think of several benefits:
- Storage of water.  In a hard rain the roof would act as a sponge.
- Filter. The roof would filter the water, rather than leech toxic substances.  
- UV Protected.
- Cost effective.  Low cost on the environment too.

Concerns are:
- Snow load.  Have a strong structure to take the load of the roof and snow.

-- 
willy at sdf.lonestar.org
SDF Public Access UNIX System - http://sdf.lonestar.org