Carpet: The Dirty Secret It is hardly surprising that around 90%of carpet dirt gets tracked in by people’s shoes with the rest being a whole variety of airborne particles, spills, splashes and day-to-day wear. However, due to the many types of soiling and carpet varieties people are often left with patchy, dull matted carpet. For example, grit or sand will get trapped within the carpet whereas water and liquids will soak deep down into the pile. In terms of liquid, carpet always dries from the top down so as the liquid evaporates moisture is slowly drawn up (this is called wicking) and often results in resoiling, carpet spots and that dreaded damp smell. The varieties of dirt therefore that falls onto a carpet can be categorised into three specific groups. Real dirt: Physical, tangible dirt which, if we wanted to, could be extracted and weighed. Dirt in this group includes soiling trapped in fibres, bundles and at the carpet base. Visible dirt: This dirt sits on the top 33% of a carpet changing the colour of the fibres and giving flooring that dull, dirty appearance. 90% of carpet dirt is tracked in by people s shoes. Apparent dirt: This is where carpet gets worn by every day wear and tear. Dye becomes less vibrant, carpet abrasions appear, and it looks uneven thus giving it additional shade and making the floor appear dirty.
A person sheds about 1.5 million skin flakes an hour, most of which becomes embedded in our carpets.
Wet Vs Dry Carpet Cleaning Along with the wide variety of carpet and dirt types - to keep the theme there is also a variety of carpet cleaning methods. There is a time and a place for all methods and no single process will solve all problems. Each has their merits and their downfalls. In all cases, where in a building the carpet clean takes place and the condition of the floor needs to be taken into consideration before selecting your method.. Did you know? Stachybotrys chartarum is a house mould that can grow on wet carpeting. Some strains produce mycotoxins which cause a number of acute and chronic health problems in humans and animals.
Types of wet cleaning include Steam cleaning, also known as hot water extraction along with shampoo cleaning. Rotary Shampoo Method: In shampoo cleaning special detergents are applied to a carpet and agitated with a machine. In commercial instances this can be done with a rotary machine. Once the shampoo has been agitated through the carpet vacuuming helps to remove the soil. If vacuuming isn’t included there is little soil removal. Bonnet Rotary Method: Usually performed in commercial buildings as it mainly restores the appearance of carpet. An absorbent pad is immersed in chemicals and water then spun across a carpet. The pad absorbs surface dirt and therefore needs to be wrung out and rinsed frequently. Detergents can contain optical brighteners to make carpet appear clean. Little removal of soil. Restores the appearance of carpeting. Tends to spread & smear dirt if care is not taken. Heavily fragranced leaving carpets and rooms smelling fresh. Shampoo and soil remain in the fibres. Covers large areas quickly. Can damage carpet fibres. Can result in texture distortion. Immediate resoiling. Dry time: 6-12 hours. Rapid resoiling rate. Leaves a lot of residue. Dry time: 1-2 hours