No room for p-trap is a plumbing term used to refer to a situation where there is insufficient space for the installation of a p-trap. A p-trap is a curved pipe that is used to prevent sewer gases from entering a building. It is installed below sinks and toilets. No room for p-traps is a common problem in older buildings, as well as in buildings with small bathrooms or kitchens. When there is no room for a p-trap, sewer gases can enter the building and cause health problems. These gases can be harmful to people with respiratory problems, such as …