Encapsulation represents a major advancement in carpet cleaning, utilising specialty polymers and detergents that form a brittle structure as they dry…

Article adaptation – Actichem Webinar “Encapsulation Cleaning” | Webinar link: HERE

In high-traffic New Zealand commercial environments—such as airports, retail hubs, and busy office towers—traditional hot water extraction (steam cleaning) isn’t always the most efficient choice for routine maintenance. The long drying times, high water consumption, and the persistent threat of soil wicking can disrupt 24/7 business operations.

To overcome these operational bottlenecks, commercial facility managers and professional carpet technicians have shifted toward Encapsulation Carpet Cleaning. This low-moisture chemistry uses advanced polymer engineering to trap and suspend soil particles, leaving carpets clean, dry, and traffic-ready in under an hour.

The Chemical Matrix: How Encapsulation Works

At the heart of Encapsulation Carpet Cleaning is a fascinating molecular process known as crystalline embrittlement. Unlike traditional shampoo detergents that rely on sticky surfactants—which can leave behind a tacky residue if not perfectly rinsed—true encapsulating agents are formulated with high-molecular-weight acrylic and maleic polymer monomers.

The chemical lifecycle of the encapsulation process follows a strict chain reaction:

[Polymer + Soil Emulsification] ──> [Rapid Moisture Evaporation] ──> [Brittle Crystal Formation] ──> [Mechanical Vacuum Removal]

When the solution is applied to the carpet, the hydrophilic (water-attracting) head of the surfactant molecule detaches oil and grease from the carpet fibres, lifting it into suspension. However, as the water evaporates, the specialized polymers alter their physical state. Instead of drying into a sticky film, they form a hard, brittle, non-tacky crystal grid around the suspended soil particles.

When dry, this crystal shell completely isolates the dirt from the carpet strand. Because the crystal has zero adhesive properties, the simple mechanical friction of routine post-cleaning vacuuming shears the crystals away from the fibre, collecting the trapped dirt inside the vacuum bag.

Why Encapsulation Prevents the “Wicking” Nightmare

For New Zealand restoration specialists, the number one advantage of a low-moisture programme is the elimination of soil wicking. Wicking occurs when deep-seated soil, buried deep within the carpet backing or underlay, dissolves during a heavy wet-clean. As the surface fibres dry, the dirty water is drawn upward via capillary action, re-staining the tips of the carpet strands within 24 to 48 hours.

Because Encapsulation Carpet Cleaning uses a fraction of the water required for hot water extraction (1:12 dilution ratios are standard), the moisture never reaches the carpet backing. Furthermore, if any deep-seated soil does manage to travel upward during the brief drying phase, the encapsulating polymers waiting at the surface intercept the dirt, locking it into a crystal before it can form a visible stain.

The Benefits of Encapsulation Cleaning

• Eliminates the need for wet extraction.
• Ideal for large commercial areas with quicker, less equipment-intensive cleaning.
• Encapsulation chemistry prevents re-soiling and improves appearance.
• Products with fluorinated polymers enhance anti-resoiling and prevent wick-back.
• Significantly lower usage of water, electricity, equipment, man hours.

The 4-Step Professional Encapsulation Programme

To secure maximum soil recovery and a perfect finish, technicians must follow this precise procedural sequence:

1. Thorough Dry Particulate Vacuuming: Prerequisite.
   Up to 80% of carpet soil is dry particulate dirt. Before applying any liquid, utilize a dual-motor upright commercial vacuum (eg: Windsor Smartvac/Sensor) equipped with a brush roller to extract deep-seated sand, dust, and grit from the pile.
2. Precision Polymer Application: Chemical Setup.
   Apply a specialized, premium encapsulating solution using a high-quality compression sprayer. For standard traffic zones, an advanced formula like Actichem Encap Plus, or Bridgepoint Encapuclean O2 that provides an added peroxide brightening boost. Spray evenly to dampen the carpet without saturating the backing.
3. Mechanical Agitation: Physical Disruption.
   Agitate the carpet immediately after spraying while it is still damp. Pass over the area using a counter-rotating brush (CRB) machine or an orbital scrubber fitted with specialized FibrePlus Encap Pads. This mechanical action forces the polymer deep into the pile, breaking the soil bonds.
4. Crystal Cure and Routine Vacuuming: Final Recovery.
   Allow the carpet to dry completely, which typically takes between 30 and 45 minutes. The facility can open to foot traffic immediately. The encapsulated soil crystals will be safely and completely extracted during the next scheduled commercial vacuum routine.

The Hybrid Restoration Principle

Encapsulation is not designed to permanently replace hot water extraction. Instead, it acts as an interim maintenance system. The most profitable commercial maintenance agreements in New Zealand utilize an 80/20 hybrid model: executing four encapsulation cleaning cycles throughout the year to keep appearance levels high, followed by a single annual hot water extraction cycle for deep sanitary flush extraction.

Products

Actichem Encap Plus

Colour: Blue
pH: 8
Fragrance: Powder Fresh
Dilution: 1:32
Safety Profile: Non-Hazardous

Actichem Encap Fine Fabric

Colour: Golden/Tan
pH: 6
Fragrance: Powder Fresh
Dilution: 1:4
Safety Profile: Non-Hazardous

Encap Boosters & Spotters

It’s important to note that encapsulation chemistry can be easily disrupted by the addition of products like boosters, spotters,
and deodorisers. These can interfere with the polymers that bind soil, reducing effectiveness and potentially leading to resoiling.
For optimal results, it’s best to avoid mixing products.
The only boosters and spotters that are compatible with the encapsulation presprays are: Perox, Actichem VDS, Conquer, Conquer O2, Spotaway U.

Q & A

Would you recommend a CRB machine with encap?
Yes, absolutely! CRB machines work very effectively with the Encap process and deliver great results. While machines like Duplex or other systems can also be used, the CRB stands out for its effectiveness. For specific comparisons with machines like the Orbot or Cymex, it’s best to consult our team for tailored advice.

Can you explain the proprietary protective layer that your Encap products leaves on fibres?
The Encap proprietary polymer is not the same as carpet protection. While traditional carpet protection creates a semi-permanent layer, Encap leaves a brittle coating that breaks away gradually over several days (typically 5–8 days).
This helps prevent resoiling without making the carpet feel brittle or crunchy. It’s invisible to both you and your client but works behind the scenes to minimise wick-back and keep carpets cleaner for longer.

Can Encap Plus be used on synthetic and low-pile carpets?
Absolutely! Encap Plus is versatile and can be used on all carpet types, including low-pile and synthetic carpets. While Encap Pro is specifically designed for low-pile carpets and may be less effective on plush varieties, Encap Plus offers the flexibility to perform well across all carpet types.

How do you recommend dosing Encapsulation solutions into the machine to get the correct ratio?
You have two main options. First, determine the exact capacity of your machine’s solution tank in litres and then calculate the amount of Encap Pro, Encap Plus, or Encap Fine Fabric required to achieve the correct dilution—such as 1:32 or 1:16. Alternatively, you can pre-mix the solution in a measuring jug or bucket before adding it to the tank. This ensures accurate dosing every time.

Can you over apply encap?
Not really, but it’s important to avoid using excessively strong concentrations. While you can go as strong as 1:5 for spotting, it’s best to stick to a 1:10 to 1:16 ratio for regular use. Over-application may make carpets feel slightly crunchy, but this will vacuum out over the next few hours or days.
The preferred method is dosing Encap through the solution tank on your machine, though a pump-up sprayer works just as well (easily sourced from your equipment supplier).

A helpful tip: when applying Encap, you should see a small trail of foam—just a few centimeters—behind the machine. If the foam breaks down shortly after, you’ve got the perfect application rate.

Is it best to pre-spray first or run Encap straight through the solution tank?
The preference is running it through the solution tank. It’s simple, efficient, and ensures consistent application.

Can a carpet protector be applied over an Encapsulation solution?
NO. Applying a carpet protector over an Encapsulation solution won’t deliver optimal results. This is because the soiling encapsulated by the polymer is still sitting in the carpet fibres and hasn’t been vacuumed away yet.
If you attempt to apply a protector at this stage, it will bond to the soiling rather than the carpet fibres, compromising its effectiveness. To achieve the best results, the carpet should be thoroughly cleaned using hot water extraction to remove any remaining soil before applying the carpet protector. This ensures a clean, bonded, and long-lasting protective layer.

What Encapsulation solution works best for cleaning pub or restaurant carpets with heavy oils and grease?
Cleaning pub & restaurant carpets with a high degree of oils and grease can be challenging for traditional encapsulation solutions. While there is work being done on advanced developments in this area, set to release in early 2025, for now the recommendation is using Encap Plus at a stronger concentration—around 1:16 or even 1:10 for severe cases.
For particularly soiled areas, pre-spraying with Actichem VDS will help break down the oils and grease, preparing the carpet for the encapsulation process. This combination delivers significantly better results in tough environments.

After applying the encap on the carpet should we allow a dwell time? If so how long?
The encap solution should be agitated directly after applying it to the carpet. Many carpet technicians prefer to apply it through the solution tank of their scrubbing machine which is ideal. The dwell time is achieved after the agitation is complete and as the carpet dries because it is not extracted out of the carpet.

I use Encap Pro on delicates like linen and cotton lounges or chairs. I usually find that if they’re heavily soiled or stained, I won’t achieve the results I do in comparison to a HWE (Hot Water Extraction). In saying that, I never really clean those material types using HWE. What is your recommendation for this situation?
When cleaning linen and cotton lounge chairs HWE is not recommended as you infer. We have found the following process to provide best results.

1. Prespray heavily soiled areas such as arm rests and back of head areas with Actichem VDS.
2. Apply Actichem Encap Fine Fabric diluted 1:16 to the whole chair including those areas presprayed with VDS.
3. Agitate with a cotton hand bonnet or upholstery brush. Some hand held rotary scrubbing machines are good for this.
4. Allow 10 minutes dwell time.
5. Using your HWE upholstery tool, vacuum only all the areas cleaned. Do not add water.
6. Dry bonnet the whole chair to ensure consistent drying. Brush to align fibres for cut pile fabrics.

This system gives you the benefit of the HWE vacuum power whilst still maintaining a very dry clean.

Relevant Training Courses

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