Vapor retarders are sheet materials used below slab-on-ground floors to limit the amount of moisture that migrates into and upward through concrete slabs. If unchecked, moisture can cause floor ...

Dear James: We plan to add a half-bathroom, but our house is built on a slab. Is it possible to still add a bathroom there, because there is no drain to the sewer in that spot? -- Charlotte G. Dear ...

Here, we tell the slab where to crack and widths of contraction joints or cracks in the joints are largely controlled by the joint spacing and concrete shrinkage. As joint spacings and concrete ...