Can the floor drain and toilet be temporarily sealed?

Hello! According to your situation, before the blockage of the main pipeline is fundamentally solved, you should "temporarily block" your own floor drain and bathroom anyway, otherwise your home will suffer. According to the thickness of the bathroom and floor drain pipes, put a thin plastic bag in some dry old cotton clothes or rags and towels, and then tie the middle of the plastic bag with a strong string, leaving one end of the rope longer to facilitate pulling out the plastic bag at the back. Insert the tied plastic bag into the pipe and tamp it with a screwdriver and a small hammer. The stronger the better. If necessary, a thin layer of plugging cement can be poured on the mouth. In the future, as long as the cement on the surface is removed, the plastic bag can be loosened with the help of a screwdriver, and the plastic bag can be pulled out by pulling the reserved rope.

According to your family's situation, as long as it is connected with the toilet drain, it must be blocked.

Before you block the pipeline, you must inform the property and all the owners who use the pipeline in advance, and actively strive to clear the pipeline as soon as possible to completely solve the problem. This is also the only feasible temporary measure, beyond reproach.

You don't have to think about what will happen to the main pipeline after you block your own sewage outlet. Even what happens is none of your business.

You don't need to go through the inspection hole in your house to clear the main pipeline. The inspection hole in your house is for the vertical pipe. According to what you said, the S elbow of the main horizontal pipe and riser downstairs is partially blocked, and there is a cleaning port under the S elbow. So you don't need to go through the inspection gate of your house. The dredging here belongs to the responsibility of the property owner or the owner who uses this pipeline.