On Thu, Jul 28, 2016 at 9:44 AM, <scott@permaculture.org> wrote:
> Concrete or cmu blocks are never a good option in terms of environmental
> footprint you will never reach carbon neutral - perhaps in 7 generations.
>
7 generations? Do the numbers. 16'X32' 1 1/2 story dwelling with concrete
floor and walls is not all that much masonry a small single family dwelling
that is more than adequate space wise and could last almost
maintenance-free, for hundreds of years. How long do stone houses last?
Free onsite materials,
no transportation, manual labor. Make your own mortar.
Two other options exist:
Instead of using rigid or spray foam insulation, except for the roof,
insulating lightweight waterproof masonry block, autoclaved aerated
concrete, can be used, products like Hebel, Aircrete or Suncrete..