Air moves across the floor and as a result dirt dust and contaminants accumulate near the wall.
Dirt around carpet edge.
This is how keech clean removes the black lines from around the edge of your carpet.
Thick carpet padding covers most of the floor but there usually isn t padding at the edges.
Air can seep around the tack strips better.
Forced air furnaces push air dust and dirt contaminates through the house especially if the filter is dirty.
Why does it happen.
You might have tried to remove these black or gray stains with vigorous vacuuming and spot treatments to find they just won t go away or if you get the stains to fade they keep reappearing.
Dirty carpet edges can be really annoying and may even trigger an allergy flare up because of trapped dust.
Sometimes called filtration lines they also occur along the bottom edges of closed doors and they can be difficult to remove.
As air gets sucked through gaps in the floorboards and baseboards tiny dust particles can get lodged in the carpeting around the edges of the room and create noticeable black lines.
Cleaning your carpet by the skirting boards also called baseboards is fairly easy if you have a crevice attachment for your vacuum cleaner and a scrub brush.
If you have noticed your carpet turning black or gray along the walls or doors you may have a problem called filtration spoiling.
Filtration soiling occurs when there is an imbalance in the air ventilation of the room.
But you may have noticed that your carpet gets especially dirty sometimes even black along the walls and corners of the room.
To clean up these stains you need water and vigorous scrubbing.
Instead there are tack strips to hold the carpet in place.
Why is the carpet so dirty around the edges.
This soiling is called filtration soiling because it comes from air passing through the carpet as it is attempting to get through the crack between the carpet and the baseboard or under a closed door.
February 7 2017 you understand why carpet accumulates dirt and grime in the middle of the room you track in mud and dirt from outside on your shoes.
As the air passes through the edge of the carpet pile this microscopic soiling is deposited there hence the term filtration soiling.
What causes black lines along the edge of your carpet.
There are several reasons filtration soiling occurs on the carpet around the perimeter of the room.