Hi, this was back in 2009 and we used Insulspan, would imagine they are still around but you should check.
The good thing was that we used their structural calculations on the wall and the three beams that held the roof panels to have an Engineer stamp the plans at a reduced price (he simply checked that their calculations were OK). The RASTRA blocks to do the perimeter foundation was a great solution as we did the floor with OSB I beams, very fast and cheap!
The good thing was that we used their structural calculations on the wall and the three beams that held the roof panels to have an Engineer stamp the plans at a reduced price (he simply checked that their calculations were OK). The RASTRA blocks to do the perimeter foundation was a great solution as we did the floor with OSB I beams, very fast and cheap!