Carpet Dark Around Edges

Think of it as soot from your air ducts and candles and other things.

Carpet dark around edges.

If you see gray or black around the edges of your carpet it s a sign of filtration soiling that occurs when your carpet filters dust out of the air. I was on a slab. As a carpet cleaner did you ever you wondered what those black lines that are along the edges of the carpet at the baseboards and under doorways. Those dark areas are a sign of infiltration.

As most readers will know from their school days heat rises. But what causes them and what can you do about them. If your carpet is turning black around the edges or you have dark lines forming along the walls it may be because of filtration soiling. My carpet guy said it was mildew but it came out each time we cleaned carpets.

The soils are filtered onto the carpet as the air passes through threw below the walls and under doorways creating the dark lines. As the air passes through the edge of the carpet pile this microscopic soiling is deposited there hence the term filtration soiling. You can combat filtration soiling with a deep carpet cleaning. Filtration soiling occurs when there is an imbalance in the air ventilation of the room.

They are most commonly found around the edges of a room beneath doors particularly airing cupboard doors patio doors and around hot air floor heating vents. This airflow flows inside the wall cavity and eventually leads to the hvac system. Method 1 removing dust and debris. Infiltration occurs when the air being forced into the room is escaping through small cracks under closed doors and wall frames.

It would come back within a few months each time. Introducing filtration soiling 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. I got black around the edge of my white carpet only on the perimeter walls. You may need to use detergent for more persistent stains.

The technical name is soil filtration lines also known as venting marks or draught marks they are dark soiled areas that gradually become more noticeable on your carpet. Dark dirt marks around the edges of your carpet are caused by an issue called filtration soiling. This occurs over a significant period of time and is not noticed until a build up has occurred.