I'd like to install laminate floor on top of Delta FL in my basement.
The basement slab is not level, it slopes (from all directions) towards a floor drain (that, via a pipe, leads to a sump pump) near the exterior door. I wouldn't like to level the slab, because drainage is a good thing.
How do I level my floor. And should I? I think I should, because otherwise the laminate won't be stable.
I came up with two ideas:
1) Somehow level below the Delta FL layer, for example with some sort of small pebbles (allowing water to go through them but large enough not to go in the drain). Or other material, I'm open to ideas!
2) Level above Delta FL but below the laminate by using dry sand.
Edit: My basemen is dry, but since I have a drain and a slope why would I give that up? Turns out that using sand, while uncommon, is something people do (google it!) and the only downside I read was that the sand can move over time unless you somehow contain it.