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An often-overlooked advantage of carpet is its ability to improve a home’s environment, a benefit to people suffering with asthma or allergies. It is simply a myth that carpet contributes to poor indoor air quality. Carpet fibers can be beneficial in trapping and immobilizing potential allergy-causing particulates, preventing them from reentering the indoor air stream. In fact, studies have demonstrated that dust-borne allergens in carpeted areas are always far below levels in the air above hard surface floors.

The majority of allergens may be removed from carpet by regular vacuuming (using a high-efficiency filter) and by periodic cleaning with the hot-water extraction or steam-cleaning method.

Carpets and allergens—answers to some common misconceptions

Some bio-pollutants, such as animal dander, dust mites, and mold, have been linked to allergies and asthma—and many of these substances are commonly found in the home. It’s important to understand that the mere presence of allergens does not pose a hazard. For an allergen to have an impact on human systems, it must be inhaled; and for inhalation to occur, it must be airborne.

Carpet acts as a trap for allergens

Carpet is capable of holding significant quantities of soil, dust, etc., without appearing dirty. Carpet is quite efficient at keeping allergens and other small particles, such as pollen, out of the air. In fact, data from a Swedish government study indicates that when use of carpet declined, the number of people reporting allergy problems increased.

Two key steps—1) regular cleaning using a vacuum with a high-efficiency filter, and 2) periodic cleaning using hot-water extraction (or “steam cleaning”)—remove the majority of allergens from carpet and significantly reduce mite populations.

Two Key Steps: Regular Cleaning Using a Vaccum With a High-Efficiency Filter

STUDY: AIRBORNE CONTAMINANTS HIGHER OVER TILED FLOORS THAN OVER CARPET

In 2002, two schools in North Carolina were the subject of a study conducted by Research Triangle Institute and University of North Carolina investigators. One school had mostly resilient tile floors, while the other was 70-75% carpeted. The study found that airborne contaminants, which are possible sources of allergens, were higher over the tiled floors than over carpet.

STUDY: PARTICULATE CONCENTRATION FROM FOOT TRAFFIC MEASURED FOUR TIMES HIGHER OVER VINYL THAN CARPET

Also in 2002, Professional Testing Laboratory studied the effect of foot traffic on air quality, using commercial carpet and commercial vinyl flooring. Following 16 minutes of foot traffic over both surfaces, the particulate concentration over the vinyl floor was found to be four times that of carpet.

MISC. STUDIES: CARPET REDUCES EXPOSURE TO PARTICULATES

Other studies, including one using Computational Fluid Dynamics, have reinforced these findings and concluded that carpets actually reduce exposure to particulates and potential adverse health effects.

SCIENTIFIC PAPER: CONCLUSIONS DISPEL CARPET MYTHS

In a recent paper, “Carpet, Asthma and Allergies—Myth or Reality,” Dr. Mitchell Sauerhoff, Ph.D., DABT, examined numerous scientific studies and other research contradicting some long-held beliefs on carpet’s alleged negative characteristics.

Sauerhoff concluded, “…based on the available science, carpet does not cause asthma or allergies and does not increase the incidence or severity of asthma or allergies symptoms. In fact, with respect to asthma and allergies, multiple studies have reported fewer allergy and asthma symptoms associated with carpet.”

Provided by shawfloors.com

 

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