CALLAWAY Plumbing and Drains Ltd. attended a call for a blocked kitchen sink, the 2″ ABS branch was completely blocked with sludge and grease. The kitchen sink drain was installed with poor grade(slope) and in the section with the clean out was even back graded(sloped the wrong direction). We drain cleaned the branch line then re graded the line to code requirements to then have the kitchen sink draining like new again. All sanitary drainage is required to have a 2% or 1/4″ per foot of grade(slope) as required by the BC Plumbing Code and the National Plumbing Code. With CALLAWAY Plumbing and Drains Ltd. you get fast, clean, friendly, and professional service everytime!