Ugly Black Lines?


Why do I still ugly black lines around the baseboards and under doorways?

This line is called filtration soiling. While it is usually found around baseboards and under doorways, it can also occur where plywood subflooring has been joined. It comes from air passing through the carpet as it is attempting to get through the crack between the carpet and baseboard or under the doorway. As the air passes through the edge of the carpet, dust, smog, and other airborne pollutants deposit there. The carpet “filters” out these pollutants and gradually becomes discolored. This occurs over a significant period of time and is not noticed until a build up has occurred.

This type of soiling is difficult to remove because the soil particles are so fine that they penetrate deep into the carpet pile, sometimes into the backing of the carpet. Can it be removed?  Sometimes. With time, effort and special products reasonable results can be achieved.

To help prevent filtration soiling, vacuum and wipe the edges of the carpet on a regular basis.



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