This rumbling noise after flushing may sound like a hammer or knocking inside the walls. When you flush, it opens a valve so additional water can come in. However, if the valve malfunctions, then this rush of water has nowhere to go, which makes all the excess water hit your pipes and create a loud hammering sound.

While gasket-sealed PVC flanges are the type most commonly found in homes, flanges come in a range of different materials, including copper, brass, stainless steel, cast iron, and aluminum, that pros sometimes secure with glue. If this is the case in your bathroom, the replacement is a job better left to the pros.

Start by gutting the old fixtures and features that need to be removed, such as the tile, vanity, and flooring. You may benefit by removing the toilet, even if you intend to use the same one. Next, install the new shower or tub, followed by the flooring, and then the drywall, which you should then paint. After that, install your new cabinets, vanity, countertop, sink, and faucet, in that order. Replace your light fixture next. Lastly, reconnect the toilet.

Yes, a toilet, sink, and shower can share the same vent. This is a common installation method that can simplify plumbing and save space. However, there are important considerations. The vent and associated plumbing must be large enough to handle the demands of all fixtures without compromising the vent's effectiveness. Additionally, the toilet should always be located downstream of all other fixtures. Because requirements can vary and space might be limited, it is essential to check your local building and plumbing codes and consult with a qualified plumber to ensure the installation is done correctly.