• kleenrite20

What Can Be Done About Filtration Soil?

You may have noticed filtration soil in your own home, or the home of a neighbor or friend. Dark, dirty-looking lines in the carpet around the baseboards, under doors and on stairs. What is it? What are the causes? Can anything be done to remove it? Will it come back?


The dark grayish or black discolorations that occur around the perimeter of rooms and in the doorways of some houses can be a source of embarrassment to homeowners. Contrary to what you may think, it has absolutely nothing to do with accumulated dust from poor housekeeping. It is not a defect in carpet. And although some believe it to be mold, it is not. Even pest control companies have been wrongly accused of causing these unsightly lines with their sprays.


So what IS it? Although it can happen in any home, filtration soiling is most common in homes that have forced air HVAC (heating, ventilation and air conditioning) systems. At certain locations in the carpet, air is being forced through the fibers which act as a filter, trapping the pollutants that are in the air. Some of these pollutants are the product of combustion and contain carbon.


Common sources are automobile exhaust, industrial air pollution, tobacco smoke, and even natural gas or oil furnaces. This carbon, combined with oily residues from cooking and other sources adheres to the carpet with very powerful electrostatic and chemical bonds. The particles themselves are extremely small and very difficult to remove.

The best course of action is prevention. Make sure that any means of combustion in your home including gas or oil heating systems, cooking appliances and water heaters are operating properly. Incomplete combustion caused by improperly functioning appliances contains higher levels of carbon, and cause rapid soiling, not to mention potentially lethal levels of carbon monoxide.


Have heat exchangers, flues and chimneys checked by an HVAC professional for leaks or improper function. If you like to burn candles, limit how often you use the heavily scented ones. The oils used in these candles do not burn completely and add to the pollutants in the air, accelerating filtration soiling. Install high quality air filters in your heating and air system, and consider using air purifiers, especially if smokers are present in the home. Tobacco smoke produces among the most difficult residues to remove.

When using a fireplace or wood stove, ensure that there is adequate fresh air entry so as to create enough of an updraft for the fireplace. Otherwise some of the smoke may get into the air and contribute to soil filtration. This may mean opening a window an inch or so. Don’t turn on ceiling fans in areas where you have a fireplace burning. Air currents may pull smoke into the living space.


KleenRite has specialized cleaning agents and techniques to treat soil filtration lines. Although complete removal of the discoloration may not be possible, we can often dramatically improve the appearance. Call KleenRite today at (217) 351-4930 for more information.


0 views