More than four in ten Lake Ridge homes are townhouses, close to three in ten across all of Woodbridge, and six in ten Lake Ridge homes went up in the 1980s and 90s. A townhouse of that era often puts the laundry on a lower or middle floor, so the dryer vent has to thread between floor joists or turn up inside a wall to reach the back of the house. Every bend is a place lint stops, and none of them shows from the laundry room.
Dale City is the other end of it. About two thirds of its homes are single-family, built around 1983 at the median, and the laundry usually sits on the lower level with a short run out the side or back. A short line packs more slowly. In a house like that the trouble is more often the hose behind the dryer, flattened when the machine got pushed back against the wall, or foil that should have been swapped for metal years ago.
In the Woodbridge CDP, around Route 1, about three in ten homes are in condo and apartment buildings, and close to half are rented. In a condo building the dryer vent may run through shared walls to the roof, and your association documents say whether that line is yours. In a rental the dryer vent cleaning often falls to the landlord, and a dated invoice from the visit is the record to keep with the lease.
Prince William County Fire and Rescue names failure to clean as the leading cause of dryer fires, about three in ten of them, and says fall and winter are the prime season, with January the peak month. So fall, before the blankets and sweatshirts start going through, is a sensible time to get the dryer vent cleaning on the calendar.