After the bathroom is tiled, can you still make a sewer hole for dirty water?

Come on, don't fight, you will regret it, in civil buildings, the bathroom is the most difficult to do waterproofing, you have paved the ground turn, indicating that the waterproof has been done, if you make a hole again, the waterproof layer will be destroyed, and it is difficult to repair, unless the floor tiles are picked up and redone! When the time comes, your hole will seep into your house, and it's okay to seep into your home, but if it seeps into other homes downstairs, your good things will come! I'm engaged in construction, studying architecture!

If you don't believe me, just punch a hole and try it!

If you want to add a drain, it is possible, but it will be more troublesome, to open the ground, lay a dark pipe, in fact, you can use a simple way to deal with the washing machine drainage, the washing machine with a shelf to raise the water, the water directly into the toilet, or use the drain washing machine.

Yes, but it depends on the process and technology of drilling, and it is easy to blow up the bricks!

You can buy an extension pipe and connect it to the lower pipe of the sink, so it won't damage the tiles and it won't cost much.