I live in a flat and since yesterday I've been hearing this "barking" or a loud "sneezing" sort of noise from the pipes in my bathroom. Sometimes it occurs between a few seconds and then stops for 2 minutes or so and happens again. What's the reason for this?
could be due to water hammer, which occurs when fast-flowing water is suddenly stopped or redirected. This abrupt change in water flow creates pressure waves that can cause noisy vibrations in the pipes.