Very low moisture cleaning (VLM for short) is an increasingly popular method of carpet cleaning used mostly in commercial environments, and less often in residential applications (though this is quickly changing). VLM is broadly defined in the industry as a method of carpet cleaning that limits drying to 1-2 hours.
VLM processes include encapsulation cleaning, ‘pad capping’, bonnet cleaning and compound cleaning. In recent years the industry has seen a dramatic rise in the use of VLM, though many cleaners remain unaware of it or know little about it. This article will cover variations of the method along with the common accessories and machines used in VLM cleaning.
Bonnet cleaning is the oldest form of VLM and considered by a large part of the industry to be the most dated. In this case bonnet ‘shampoo’ (non encapsulation based cleaner, not to be confused with popular soap free products) is applied via pump or electric sprayer and cleaned using a 175 rotary machine with looped cotton bonnets. This is not much different from other VLM methods.
The scrubbing itself cleans the carpet to a degree that is noticeable to the eye. The cleaning solution is then allowed to dry, after which the remaining dirt, now “encapsulated”, is removed with simple vacuuming. Encap is generally considered the most efficient type of VLM cleaning in commercial settings due to its simple process and quick 30 – 90 minute dry times.
