Have You Noticed Grayish or Dark Lines along the walls on your carpets

You probably do not want to know this, but it is not a defect in your carpet. It is called soil filtration which is a term used to describe dark, gray (sometimes black) lines that appear on carpet. Soil filtration occurs because the carpet acts as a filter to dust and other airborne particles resulting from a concentrated flow of air over the carpet. It is most commonly found around baseboards, under doors and along the edges of stairs.

The primary reason for this concentrated flow of air is pressure changes within a room. Pressure changes occur within a room from either the effect of warmer air rising or from your heater or air conditioner blowing

air into a room without a return vent. Because of the pressure change, air tries to flow either in or out of the room. For walls that are not sealed to the floor, air moves in and out of the room at these areas and that is why you will see it along walls and stairs. For these situations, unless the air leakage areas are addressed, the soil filtration will continue to occur.

 

 

Also, have you ever noticed a grayish or dark line at the doorway of a room? Especially a closet or a room that is rarely used and the door is always shut. Once again, soil filtration. It is quite common for dirt and dust to accumulate under doors when they are shut. Due to pressure differences between rooms (as described above), air will flow from the high pressure

room to the lower pressure through the largest available holes. With the door shut, the undercut of the door is generally the largest available hole. Therefore, as the air passes between the door undercut and the carpeting, the carpet acts like a filter taking out dirt and dust particles from the air. For these situations, you might consider leaving the door cracked so air can move around the door and not under the door.

Do your wool carpets and/or rugs shed when you vacuum?

     Are you worried that the carpet or rug is degrading. Don’t worry. This is a natural characteristic of wool carpets and rugs. 

     Some pilling and shedding can occur with all wool carpets and rugs. This is a natural characteristic of wool carpeting because wool carpets are made from short “staple” fibers. A staple fiber is a short

length of fiber generally ranging from 4 to 8 inches long which is then spun into a yarn comprised of these short lengths. As we all know, wool is sheared from sheep. The result is short lengths of fiber which is then woven into a yarn. Because the yarn is made up of millions of short fibers, there are millions and millions of ends of these fibers in the carpet. Kind of like split ends in a person’s hair. It is impossible to remove all of these loose ends in the construction process. The result is these ends come out or shed when vacuuming.

     Once again, no need to worry. Wool carpets will not wear out from the loss of fiber. They can “ugly out” from use and abuse but they won’t fall apart.  Also, the thicker the carpet yarn, the more likely you are to see shedding. Once again, no need to panic. The shedding should diminish with time but it will never go away completely. There will always be some fiber in the vacuum canister. Remember, this is normal.

For more information, visit our website at www.graysoncleans.com