However, with L shaped curtain rod, you can install it in a spacious bathroom or the small one, as long as the shower or bathtub that you want to be curtained is placed near the wall because it needs to be installed by attaching each end of the rod to the wall. To create a curtain rod, you can use suitable size of pipe and shape it L by using T pipe and pipe glue. This will definitely save money and also more efficient. If you afraid that it will ruin the concept of your bathroom, you can paint it or decorate it in such away that it can match with the overall concept of your bathroom. Architecture.