Many homeowners have concerns with water flowing in through exterior doorways, stairways, and garage door openings. A normal drainage system cannot address this problem. For these situations, we recommend the TrenchDrain drain channel and grating system. TrenchDrain resembles half of a piping system with a grate fitted snugly on top. The grate is flush with or slightly below the floor, where it can catch water entering from the outside. Here is an example of what our TrenchDrain product looks like when installed in Tennessee and Kentucky homes.