Summary: Concrete is needed to backfill a drain trench before tile is installed. Learn how to add a new bathroom to a home, including tips on covering up a drain trench in this free home improvement video.
Dave Pollack owns Dave's Handyman service in Cottonwood, Arizona. He has been doing home repairs for years and is considered a Jack of all trades.read more
"We've mixed up some more concrete and we're just in the process of finishing off this job here. Put some back in the bucket, here. Once this dries, in a day or so, we can come in and lay our tile and that will finish up our floor. The reason that I'm doing this is, it finishes it and makes it more even with the floor. When the shower pan sits on here it'll be setting on a nice solid surface and there will be no weak spots underneath it. That's about good. This doesn't have to be worked like regular concrete, if you're pouring a sidewalk or something because it's all going to get covered up under the tile. What we're really after is just, just filling in the hole. Ok, that should do it. Yeah, I think that's good enough. Ok, now we've, we've gone through the whole process of chiseling out the floor, putting in the drains, rerouting the water lines, and we had our inspection. We passed out inspection so now we filled up to about two and a half to three inches with dirt to cover the pipes and then we filled it in with concrete so now the tile man can come in, lay the tile, and then we can finish the bathroom."
eHow Article: Adding Concrete to a Drain Trench in a Bathroom