Questions for Stan


  • Which is best? Slab on grade or vide santaire?
  • What’s the best way to insulate slab on grade?
  • How do we ensure the slab of concrete is level? 
  • If we decide to use form boards instead of breeze blocks, how do we make sure the blocks are level?

Foundation cement

Just asking for some very rough quotes for the cost of cement at

Assuming we have a depth of 60cm (this is only guess work at the moment), we have an external wall footprint of 8m x 10m

Assuming the concrete base major support area is 1m deep (it will be less that this).

That gives us (for a 1 metre depth)

8 m cubed+ 8m cubed+ 9m cubed+ 9m cubed.

= 34 metres cubed of cement for 1 m depth.

So for 0.6 metres depth we need 20.4 m cubed. I filled out the form on the above site as below so am waiting quotes.