In order to improve existing filtration lines you will need harsh cleaners and a stiff brush to work at it by hand.
Filtration lines in carpet.
Air circulation causes the carpet to act like a filter trapping small airborne dirt oil dust and carbon between the wall and carpet or under doorways.
You will typically see these lines along the perimeter of the room and near floor registers.
Smog lines soil lines soil filtration lines and perimeter soiling are basically any darkened or overly dirty places in a carpet normally appearing as black lines or soiled areas at the edges of the room.
What causes black lines along the edge of your carpet.
As warm air rises in your home particularly when your furnace is running it carries dust allergens and pollutants throughout your home.
Filtration lines soiling are those dark lines or bands of soils that you find along walls under doors that are kept closed for a length of time under the skirting of furniture and more.
Their makeup is oily and the molecules of the soils are so small that cleaning them or removing them from fibers is difficult.
Filtration lines sometimes referred to by other names.
What causes carpet filtration lines.
Since a carpet slopes down along a wall and is no longer flush when there are filtration lines the majority of the soil and dirt build up develops in cracks.