Hello! We live in a hillside house with a balcony on the side with two floors.
It is under the house roof and made of concrete.
We are going to renovate the entire balcony and also make a patio underneath. Currently, we have a "ceiling" on the lower outdoor area and would like to keep it because it looks nicer!
How should we prepare the surface on the balcony? Do we need to put metal/plastic/felt under the joists to protect the concrete slab? Or can we just build directly on it?
If we need to have metal/plastic/felt underneath, should it be sloped outward to allow any water to drain out?
So, for example, should we cut the joists at an angle to create a slope, lay the felt/plastic/metal on top, and then add another cut joist in the opposite direction to level the floor?
It is under the house roof and made of concrete.
We are going to renovate the entire balcony and also make a patio underneath. Currently, we have a "ceiling" on the lower outdoor area and would like to keep it because it looks nicer!
How should we prepare the surface on the balcony? Do we need to put metal/plastic/felt under the joists to protect the concrete slab? Or can we just build directly on it?
If we need to have metal/plastic/felt underneath, should it be sloped outward to allow any water to drain out?
So, for example, should we cut the joists at an angle to create a slope, lay the felt/plastic/metal on top, and then add another cut joist in the opposite direction to level the floor?
