I have a cast slab in the kitchen and hallway and am going to build an interior wall. Can you without problem place the wood directly against the slab or should you have some plastic piece/sill piece between the end grain and the slab to prevent the wood from absorbing moisture?? Not that the slab indoors should be damp, I assume, but... I want to be 100% sure that I'm doing it right.
On a "modern" insulated slab situated on a bed of macadam, I wouldn't be worried about placing an interior wall directly on the concrete. However, practice dictates placing plastic or sill insulation underneath.
At least add some diffusion-tight construction plastic, or a small piece of roofing felt or something similar. It is no cost or trouble in the context.
I have an insulated slab, and technically it should always remain dry, but I have placed some sill insulation under everything that touches it, both sills and columns. It is important to note that a column usually bears very large loads, so not just anything will work under it.
I have an insulated slab, and technically it should always remain dry, but I have placed some sill insulation under everything that touches it, both sills and columns. It is important to note that a column usually bears very large loads, so not just anything will work under it.
