A bathtub/shower with the water drainage in the wrong place

This is one of the most expensive rookie mistakes that you might fall victim to, especially if you decided on a DIY bathroom renovation. The most common reason for this is that the hole that’s made for the water drainage doesn’t line up at all with the plumbing drain on the bathroom floor.

Why does it matter so much? The reason is so simple and essential, that you’ll immediately understand the need for it. When the water doesn’t drain completely in your bathroom, it might result in a bad odor.

To make sure that the drain is in the right place, you have to measure the new bathtub or shower pan to the inch, before starting to install it.