No Pressure In Shower. The most common reasons are. If there is low hot water pressure in your bath tub and shower only it will either be a leaky pipe a clogged shower head or bathtub faucet or a clogged line that goes to both.
Read further on for fixes. If your shower head is old it may be time to replace it. This will result in a loss of water pressure and you wont be.
If the cold or hot is shutoff then it will reduce the pressure down to nothing or a slight trickle.
Couldnt shut off hot water one morning in the shower and removed stem to find part of the rubber washer and screw laying inside. This will result in a loss of water pressure and you wont be. In most cases this indicates a fixture specific problem. So if you cant reach these valves or you simply cant find them it is recommended to install a water pressure regulator.