CleanSeal is the WoolSafe Organisation’s standard for synthetic carpets and rugs. Where WoolSafe covers wool and other natural fibres, CleanSeal covers the man-made ones: nylon, polyester and polypropylene, which is what most carpets and most everyday rugs in South African homes are made of. It works the same way as WoolSafe, with three separate marks: one for cleaning products, one for the technician, and one for the cleaning company.
The Carpet Guys hold both. We are a WoolSafe & CleanSeal Approved Service Provider, membership number SA126 002, and listed on the WoolSafe register. This article explains what the CleanSeal half of that means, and why a synthetic rug deserves a standard of its own rather than being treated as the easy option.
Why synthetics need a standard at all
It is tempting to assume that a synthetic fibre cannot be harmed by cleaning. Nylon and polypropylene do not felt like wool, they do not brown like cotton, and they will not collapse in water like viscose. The chemistry that would ruin a wool rug in minutes is often tolerated by a synthetic one. That tolerance is exactly why synthetics get cleaned carelessly, and why they have their own ways of going wrong.
Residue that pulls dirt back in
The most common failure on a synthetic carpet or rug is not damage, it is re-soiling. A cleaning product that leaves a sticky film behind makes the pile look clean on the day and grey again within weeks, because the film grabs every particle of dust walked across it. Polypropylene and polyester are oleophilic, which means they attract and hold oily soil, so a residue on those fibres is especially quick to show. Our guide to why carpets get dirty again quickly explains the mechanism.
Colour loss on dyed nylon
Polypropylene is usually solution-dyed, meaning the colour runs through the fibre like the colour in a crayon, so it is very hard to fade. Nylon is different. Much nylon carpet is dyed after the fibre is made, so the colour sits in dye sites that strong chemistry can shift. A product that is too alkaline, or a bleaching spotter, can leave a pale patch on a nylon carpet that no later clean restores.
Stripping the protection you paid for
Many synthetic carpets leave the factory with a stain-resist or soil-resist treatment. Harsh, high-alkaline cleaning strips it, so the carpet stains more easily after the clean than it did before. The owner rarely connects the two, because the damage shows months later.
Optical brighteners
Some cleaning products contain optical brighteners, the same additive that makes laundry look whiter. On carpet they make the pile look brighter for a while and then leave it looking uneven, and they cannot be rinsed out once they have bonded to the fibre.
What the CleanSeal Approved mark means on a product
A cleaning product carrying the CleanSeal Approved mark has been independently tested for use on synthetic fibres. To pass, it has to do the job it is sold for to a professional standard, and it has to show that it does not make the carpet re-soil faster, does not affect the colour, works within safe pH limits and is not hazardous to use. The testing follows a published protocol and approval applies to that specific formulation, not to every product a brand makes.
The standard for synthetics is less strict than the WoolSafe standard in some respects, which is correct, because synthetics genuinely tolerate more. It is not less strict in every respect: re-soiling and colour are tested just as seriously, because those are the failures that matter on these fibres. Many professional products carry both marks, which tells you they are safe on wool and perform properly on synthetics. We cover what to look for on the bottle in our guide to WoolSafe Approved products.
The CleanSeal Approved Fibre Care Specialist
The individual qualification. A CleanSeal Approved Fibre Care Specialist has completed the WoolSafe Organisation’s Fibre Care Specialist training and been examined on the cleaning and maintenance of carpets and furnishing fabrics. The training is the same course that produces a WoolSafe Fibre Care Specialist, which makes sense: the most important skill in both is recognising what a fibre is before deciding how to clean it. Our master technician, Keaton Oshry, holds both, as a WoolSafe & CleanSeal Approved Fibre Care Specialist.
The CleanSeal Approved Service Provider
The company registration. To hold it, a cleaning company needs at least one CleanSeal Fibre Care Specialist on the team, a track record of years of professional carpet cleaning, and a commitment to use only approved products when it cleans. Like the WoolSafe registration, it is renewed every year, so it describes the company as it is now rather than as it was on the day it first qualified. Ours is valid until 31 May 2027.
Why we hold both
Because we clean every kind of carpet and rug, and a credential that covers only half of them would only back up half of what we say. A typical Gauteng home has a nylon or polyester fitted carpet in the bedrooms, a polypropylene rug under the dining table, a wool rug in the lounge, and quite possibly an 80/20 wool-blend carpet in the passage. WoolSafe speaks for the wool. CleanSeal speaks for everything else.
In practice it means the same fibre identification happens first on every job, and the chemistry is chosen for the fibre in front of us. Synthetic rugs go through our rug-washing machine, which gives a stable synthetic pile the deepest clean it can take, while wool, silk, cotton, kilim and hand-knotted rugs are washed by hand and viscose, sisal and jute are dry cleaned. Our guide to cleaning a polypropylene or synthetic rug goes through the synthetic side in detail, and wool-blend carpet covers the carpets that sit between the two standards.
How to check a CleanSeal claim
The same way as a WoolSafe one. Ask which mark it is (a product, a person or a company), ask for the membership number, and look the company up on the WoolSafe Organisation’s public register, which lists approved cleaners by country and city. Our guide to checking a cleaner’s registration walks through it step by step, using our own entry as the example.
What CleanSeal does not promise
Being clear about the limits is what makes the credential worth anything.
- It does not undo permanent damage. A melted patch on polypropylene from a hair iron, a bleach spot on nylon, sun fading at a window and flattened pile in a traffic lane are not soil. No approved product removes them, and we say so before we start.
- It does not make a synthetic product safe on wool. A product approved only under CleanSeal has been tested on synthetics, not on wool. That is exactly why fibre identification comes first, and why products carrying both marks are so useful in a mixed home.
- It does not replace judgement on the day. A rug sold as polyester can turn out to be part viscose, and a backing can be jute. The registration commits a company to the right products; the technician still has to recognise what is in front of them.
Why it matters for offices too
Most commercial carpet is synthetic, usually nylon carpet tiles or broadloom, so for an office, a school or a hotel corridor the synthetic standard is the relevant one. The failure that costs a business money is re-soiling: a clean that leaves residue in the traffic lanes brings them back darker within weeks, and the carpet gets cleaned more often and replaced sooner. Approved, low-residue chemistry and a thorough rinse are what keep a commercial floor looking right between visits. There is more on that side of the work on our commercial carpet cleaning page.
Common questions
What is CleanSeal?
CleanSeal is the WoolSafe Organisation’s certification programme for synthetic carpets and rugs, such as nylon, polyester and polypropylene. It has three marks: CleanSeal Approved for cleaning products that have been independently tested on synthetic fibres, CleanSeal Approved Fibre Care Specialist for a trained and examined technician, and CleanSeal Approved Service Provider for a cleaning company that employs one, has years of professional experience and commits to using approved products.
What is the difference between WoolSafe and CleanSeal?
The fibre. WoolSafe covers wool and other natural fibres, and CleanSeal covers synthetics. Both are run by the WoolSafe Organisation and both use the same three-part structure of product, technician and company. The CleanSeal product standard is less strict in some respects, because synthetics tolerate more, but it tests re-soiling, colour and pH just as seriously.
Does a synthetic carpet really need a CleanSeal cleaner?
It needs a cleaner who avoids the synthetic failure modes: residue that makes the carpet re-soil within weeks, colour loss on dyed nylon, and stripping the factory stain-resist treatment with harsh alkaline chemistry. A CleanSeal registration is independent evidence that the company has been examined on those and has committed to approved products, which is why it is worth asking about even on a carpet that seems hard-wearing.
Is The Carpet Guys CleanSeal approved?
Yes. The Carpet Guys are a WoolSafe & CleanSeal Approved Service Provider, membership number SA126 002, valid until 31 May 2027, and our master technician is a WoolSafe & CleanSeal Approved Fibre Care Specialist. We are listed on the WoolSafe Organisation’s public register under Johannesburg.
To have a synthetic or wool carpet or rug cleaned by a registered company, see our rug cleaning and carpet cleaning services, or request a quote.