Low Water Pressure in Master Bathroom Shower
My water pressure in my master bathroom stand up shower is very low. When I turn the water on it sometimes dribbles out and then makes a knocking sound and will get more pressure. This lasts for a little then makes the same knocking sound and goes back to a dribble of water. The sink in that bathroom is fine as well as the other bathroom on the second floor. This did not gradually get worse it just started out of now where. Any suggestions?