I'm planning to remove my old deck, and place concrete slabs 40x40cm instead. A few questions:
- Is it sufficient to put a gravel on the ground and sand on top of it? I thought this should prepare a good foundation for slabs.
- Should I be placing slabs right to the house foundation (it's standing ~50cm above the ground)? If slabs will be adjacent to the house foundation, will there be a risk of rain water leaking under foundation?
I found this useful video https://www.youtube.com/watch?v=pqsc6zX6SEs