Section 1.1.7 states this explicitly ... Should the vapor retarder be placed at the bottom of the slab? Placing a concrete floor slab directly on top of an intact vapor retarder helps to ensure ...

The placement of a water vapor retarder directly below concrete floor slabs on the ground has become common practice for buildings where floor coverings or coatings are to be installed.

Holes can appear on concrete floors for a few reasons. Sometimes improper mixing of the concrete leads to a pocket of ...