For your remodeled bathroom to operate well, it’s critical to install vent and drain lines of the proper size and slope. Use a 2-in. line to drain the shower and 1-1/2-in. line to drain the sink. The vents for the sink and shower can be 1-1/2-in. pipes, but a toilet should be vented with at least 2-in. material. Make sure that the drain lines drop 1/4 in. for every foot of travel toward the main stack.
The wall behind the toilet can be almost any height. For a standard toilet height of 15 in., make the wall a minimum height of 43 in. If you’d like a higher toilet, make the wall that much higher. Or, make the wall go all the way to the ceiling. We built a short wall to conserve space and to create a shelf and a mirror alcove. The wall at the opposite end of the shower can be any height as well. We made it the same height as the toilet/sink wall so we could line up the accent tile and make a convenient shower shelf.
Interior bathroom demolition costs $1,000 to $2,300. Prices can go higher if you’re removing and moving walls to create a different footprint. For the experienced DIYer, this is a good place to save money by doing it yourself or assisting the contractor. However, demo can get expensive quickly if you take out a load bearing wall, cut electrical lines or break a water pipe. Avoid the risk by hiring a pro.
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