Preformed dryer vent cleaning. Upon arrival client stated the dryer was giving an error code of 80percent blockage. I inspected the dryer vent and saw a good amount of lint build up. I disconnected the dryer vent hose and began clear the vent. A substantial amount of lint build up was cleared from the vent. I proceeded to the attic were i disconnected the vent piped to the roof was and cleared any lint build up further up in the vent stack. After completing the dryer vent cleaning I inspected for cleanliness all around.