Are sedimentary rocks waterproof

Answer 1

Sedimentary rocks are generally not waterproof due to their porous nature, which allows water to seep through their spaces and fractures. However, the degree of permeability can vary widely depending on the type of sedimentary rock and its composition. Some sedimentary rocks, like shale, can be relatively impermeable and act as barriers to water flow, while others, like sandstone, can be quite porous and allow significant water movement. Thus, while some may exhibit limited waterproof characteristics, sedimentary rocks as a whole cannot be considered entirely waterproof.