Fine Answered Questions
Sale only to companies, tradesmen, freelancers and public institutions.

FAQs – frequently asked questions

JATI SPE Mould Remover

No, in contrast to most industrial mould removers, JATI SPE Mould Remover is free of chlorine, hypochlorite, aldehydes, alcohols or quaternary ammonium compounds. JATI SPE Mould Remover is based on the active ingredient hydrogen peroxide stabilised with fruit acids, which are also used in preservatives in the food industry. Another benefit is that it is readily biodegradable. Dermatest gives the product a “very good” rating in terms of skin compatibility (2009).

No special safety regulations must be observed for small-scale use of JATI SPE Mould Remover. However, you should always protect yourself against the dangers caused by mould. Here we recommend various safety precautions, such as a protective mask, gloves etc. For the remediation of large mould infestations or for the application of JATI SPE Mould Remover in small, unventilated rooms, breathing protection should be observed in accordance with the work instructions.

The success of the product is based above all on the combination of fruit acids and active oxygen, which enables it to break through the protective mechanism of the mould and also destroy its cells from the inside out. On the cell surface of the mould there are specific enzymes, so-called catalases, which protect it from the active oxygen, amongst other things. However with JATI SPE Mould Remover, these catalases cannot recognise the “disguised” active oxygen due to this combination: it gets inside the cells like a “Trojan Horse” in order to kill the mould. The amount of active oxygen is safe for humans and animals because it is below the threshold for hazardous substances – in contrast to many conventional products that use highly concentrated hydrogen peroxide.

JATI SPE Mould Remover is very economical to use and works on any surface – from plaster, silicone, wood, masonry, tiles, OSB panels and permeable wood composite to carpets and other furnishings. You only need 80 – 120 millilitres of the spray solution for one square metre of mould-infested surface: so one litre of spray solution is sufficient for an area of 8 to 12 square metres. No special safety precautions (see technical data sheet) must be observed for small-scale use of JATI SPE Mould Remover.
We recommend thorough ventilation of the room (shock ventilation) upon completion of the treatment. Since the product is very easy and economical to use and generally no follow-up treatments are required, a working time of about 3-5 minutes on average is sufficient for a mould surface of 10 square metres when using suitable devices. The treated regions can already be cleaned after a reaction time of one hour. Due to JATI SPE Mould Remover being quick and easy to use, it is also suitable for large-scale remediation projects or essential remediation measures, e.g. after flooding.

No, JATI SPE Mould Remover does not damage the surfaces. A colour patch test should normally be performed in an inconspicuous area before applying the product, only in the case of sensitive materials, such as carpets, fabrics etc.

Wallpaper should always be removed if a mould infestation appears. Very often the mould has grown through the wallpaper and “fed” off the wallpaper paste. If the wallpaper comes away from the surface when you spray on the JATI SPE Mould Remover, then this is a sure sign that the mould has grown through the wallpaper and fed off the paste. Besides removing the wallpaper, it is also necessary to treat the plaster underneath the mould. This should be done over an extensive area because the mould mycelium on the surface of the plaster is not visible with the naked eye.
In many cases, you may be reluctant to remove fairly new wallpaper on grounds of cost. Only in exceptional cases when it concerns very small areas or so-called mould stains you may not need to remove the wallpaper by still applying JATI SPE Mould Remove to kill the mould. The dead mould should then be removed. The following always applies: remove the wallpaper.

If the plaster is porous, it needs to be removed. If it is firmly bonded to the surface, it is sufficient to spray the surface with JATI SPE Mould Remover and then clean it. Mould colonises on surfaces and does not grow on undamaged surfaces.

If the mould infestation is only in a small area, you can treat the mould yourself. However, you should consider that the mould can spread further due to airborne spores and this may lead to “secondary contamination”. Professional remediation specialists often find other infested areas that are not quite as obvious and easily accessible for laypeople.
In principle, a specialist company should be consulted for mould infestations of more than 0.5 m².

Mould likes silicone joints because of their often humid environment. If the mould is only on the surface of the silicone, it is sufficient to spray the surface with JATI SPE Mould Remover and thoroughly wipe or rinse off the dead fungal biomass after one hour.
Often the mould has already grown into the silicone and in this case surface cleaning will no longer suffice. The silicone must be removed. You should spray the surface of the joints with JATI SPE Mould Remover before inserting the new silicone compound. This will prevent a quick fungal infestation from the surface.
We recommend that you spray the corresponding areas at regular intervals as a preventive measure to protect the cleaned or new silicone joints against further fungal infestations.

Yes JATI SPE Mould Remover is particularly suitable for sensitive areas, such as bedrooms, children’s rooms or bathrooms, because in contrast to most industrial mould removers, it is free of chlorine, aldehydes, alcohols or quaternary ammonium compounds.

No, all rooms are quickly accessible and habitable again after the treatment. However, we recommend thorough ventilation of the rooms after the treatment.

A musty or mouldy smell in the basement can be an indication of a fungal infestation. Sometimes it is difficult for laypeople to identify mould growth in the dim light in basements – but the smell is unmistakable. It is best to consult a building expert or a professional remediation company in this case. However, if it is only a small infestation and the cause is identified and eliminated, spray the infested areas locally. The dead residues can be removed after a reaction time of about one hour.

JATI SPE Mould Remover is also ideal for large-scale or heavy mould infestations because it is effective against all types of mould.
However, a remediation specialist should be commissioned for the remediation of a large-scale infestation because the cause of the mould also needs to be found and eliminated. They also need to check whether certain infested parts need to be removed. If there is likely to be heavy spore contamination in the ambient air (and ambient area), a check also needs to be performed regarding the application of JATI SV Spore Destroyer by means of cold or hot fogging as an additional remediation step.

You can eliminate small mould infestations caused in particular by ventilation problems or explainable problems, e.g. in the bathroom, relatively easy by yourself using JATI SPE Mould Remover in the 0.5 l spray bottle.
However, you should definitely consult a specialist for areas greater than 0.5 m². Here it is important to identify the cause of the damage and arrange for it to be eliminated properly. This is the only way to ensure proper and sustainable mould remediation and make sure that the cause is eliminated so that there is no risk of more mould developing.
Even if you notice a mouldy smell but cannot see any mould stains, you should contact a specialist. There are plenty of possibilities where the fungus could be hiding that you cannot see. Popular places include behind cupboards (external wall) and skirting boards, in cavities, behind beds and curtains.

Sometimes harmless-looking mould stains on plasterboard indicate a serious mould problem. You often find these situations in bathrooms or adjacent rooms. The plasterboard is soaked through moisture damage or small amounts of water that continuously leak – an easy target for mould. You can smell it for a long time but so far you have barely noticed it. Here you have to assume that the back of the plasterboard that you cannot see is heavily infested by mould. There is only one solution in this case: to remove the infested plasterboard. Unfortunately, the mould species Stachybotrys is also very often detected in damage of this type, which is a harmful fungus. You should therefore not put off dealing with the remediation or try to come up with any “emergency solutions” yourself. A professional should definitely be consulted.

You often find clearly excessive spore concentrations in a home as a consequence of a mould infestation indoors. The elimination of mould on the surface alone also does not solve this problem. Often the elimination of mould leads to additional contamination of the ambient air because minute air movements can be sufficient to detach spores from the surfaces and spread them through the ambient air. The mould is spread by these mould spores. One spore can survive for an extended period of time even under the harshest conditions, eventually with enough moisture to germinate and cause a mould infestation. The mould spores on surfaces are destroyed by JATI SPE Mould Remover. JATI SV Spore Destroyer is available to kill spores in the ambient air; it is converted into minute droplets of active ingredient by cold or hot fogging devices. Allergy sufferers in particular are often affected by mould spores in the ambient air.

The effectiveness of the product is attributable to the stabilisation of the hydrogen peroxide by natural fruit acids. This makes the hydrogen peroxide remain stable for significantly longer. In addition, the fruit acids hinder the catalyses of mould. Catalyses are protective mechanisms of mould and bacteria that are also capable of quickly decomposing higher concentrations of hydrogen peroxide in water and oxygen.

No. Mould cells can only become resistant to metabolic toxins. However, the active ingredients in JATI SPE Mould Remover are not metabolic toxins, but have an oxidising effect.

JATI SV Spore Destroyer

JATI SV Spore Destroyer is a highly effective biocidal product that can be used to kill mould spores in the ambient air within two hours.

Only 3 ml/m³ of ambient air of JATI SV Spore Destroyer is needed. With a droplet size of 5 to 50 µm, this means that about 220 million to 45 billion droplets are spread over an area of 1 m³.

JATI SV Spore Destroyer is delivered into the ambient air with fogging devices (cold or hot foggers). Remediation specialists using JATI SV Spore Destroyer will recommend to you whether the active ingredient should be delivered by means of cold or hot fogging based on the problem and the affected areas. Cold fogging is generally advisable in private premises.

JATI SV Spore Destroyer should be left to react for at least 2 hours. Then the rooms are accessible and habitable again after thorough ventilation.

We recommend for JATI SV Spore Destroyer to be applied by means of fogging by specialist remediation companies. They have the appropriate equipment (foggers) and can therefore achieve the optimum results. After every mould remediation case, the final measure after the deep cleaning should be the application of JATI SV Spore Destroyer by means of fogging. This kills the mould spores in the ambient air that occur in elevated concentrations after an infestation indoors. In addition, any remediation should always include the identification and elimination of the cause. As a general rule, this requires the involvement of specialists.

Certainly not. JATI SV Spore Destroyer is always part of a remediation concept in combination with JATI SPE Mould Remover or, if necessary, in combination with dismantling measures. After the local elimination of the mould, the fine dust particles in the vicinity of the remediated areas need to be removed in conjunction with the dead mould spores (deep cleaning with a fine dust filter) and fogging with JATI SV Spore Destroyer is to be conducted as a subsequent measure. If a remediation specialist promises to achieve remediation success only through fogging with JATI SV Spore Destroyer, without treating the surfaces infested with mould, this is not correct and should be questioned.

We recommend wearing a protective mask with a class A1-P3 filter in addition to a protective suit, rubber gloves and tight-fitting safety goggles.

The mist from the JATI SV Spore Destroyer should take 2 hours to react. A longer reaction time has no negative effects. The rooms are accessible and can be used again after thorough ventilation.

The active ingredient in JATI SV Spore Destroyer consists of hydrogen peroxide stabilised with fruit acids. It does not pose a danger to indoor plants due to the low amount of active ingredient. Nevertheless, the tolerability must be checked in individual cases.

A decision also needs to be made here in individual cases. If fogging is conducted with JATI SV Spore Destroyer after eliminating small mould infestations, it is not necessary to remove objects from the room in our experience. But even here, a check should be carried out in special circumstances (e.g. in the case of works or art, valuable furniture etc.).

We do not anticipate that the recommended amount of active ingredient will cause damage to the furniture surfaces. Electrical and electronic equipment should be covered. After a mould infestation, increased concentrations of the mould spores can be found on furniture etc. This furniture should be wiped down with JATI SPE Mould Remover using a damp cloth.

Practically every time mould is eliminated, significant quantities of spores detach from the surfaces depending on the species (20 million mould spores can definitely be found in an area of 1 cm²). This means that the spore contamination in the room increases significantly through the elimination of the mould. Consequently, there can be significantly more mould spores in the ambient air than before after the remediation. JATI SV Spore Destroyer is used in addition to so-called HEPA (high-efficiency particulate air) filters to avoid this situation. JATI SV Spore Destroyer kills all the spores in the ambient air.

We are getting more feedback confirming that the occupants of a house are complaining about fewer allergic symptoms after fogging with JATI SV Spore Destroyer. However, we cannot readily make a generalisation from this positive information but it confirms test results available to us in conjunction with the effect of our products against the allergens of different types of mould.

Deep cleaning

Deep cleaning is extremely important for any remediation of indoor rooms infested with mould. Unfortunately, this is often not sufficiently adhered to: extensive reworking is then required in order to achieve satisfactory results in a final release measurement. This leads to considerable extra costs that are certainly not taken into account in the calculations.
We don’t want to comment on how the deep cleaning should be performed but rather promote an understanding for careful deep cleaning by providing some background information.

3 million spores have already proven to be found in one gram of house dust. So if there is still dust and dirt on surfaces after the remediation of a mould infestation, this means that the spores in the dust are easily whirled up by air movements and then form an integral part of the ambient air. 3 million spores in a 50 m³ room amount to 60,000 spores per m³ after uniform distribution. Of course, not every gram of dust contains this quantity of spores. This example just demonstrates what situations you can be faced with. And it also shows how important it is to remove minute quantities of dust and dirt.

The causes are satisfactorily eliminated and the mould infestation is thoroughly removed from all surfaces – and yet they fail the test to check the remediation success? Small amounts of dust overlooked during the deep cleaning, which contain high quantities of spores, may lead to a failure in the release measurement. It makes no difference when measuring the particles as to whether they are living or dead spores!

In order to stress the importance of deep cleaning, we have included practical examples in our online training area, which clearly demonstrate that successful remediation is not feasible without deep cleaning.


Fogging (also known as misting) with JATI SV Spore Destroyer as part of mould remediation is a practical and highly effective measure to kill mould spores in high concentrations in the ambient air. However, the low amount of active ingredient required for this is not sufficient for a concurrent surface treatment.
We would like to take this opportunity to point out that the killing of mould spores in the ambient air does not replace mould remediation. Fogging with JATI SV Spore Destroyer is always part of an integral part of an effective remediation concept in combination with JATI SPE Mould Remover or also, if necessary, dismantling measures.
Fogging is a standard element in many remediation concepts. This is done effectively with only a small amount of active ingredient (3 ml/m³) and a time outlay of just a few seconds. However, the optimum results are only guaranteed with the correct use of JATI SV Spore Destroyer. We would therefore like to provide information on the correct use of our product rather than highlighting its benefits.

The application of JATI SV Spore Destroyer is only advisable when mould has previously been removed from mould-infested walls, e.g. through the application of JATI SPE Mould Remover. Without the proper treatment of the surfaces and without deep cleaning, the subsequent fogging will not lead to adequate remediation results. Living mould that is present on the surfaces will release mould spores into the ambient air again after the active ingredient has evaporated. Therefore additionally, the infested surfaces always need to be treated.

Mould remediation must always be accompanied by cause elimination. In addition to killing mould on infested surfaces, it may also be advisable to implement dismantling measures (wallpaper, plasterboard, dilapidated plaster) depending on the type of infested materials.

The killing of mould, if necessary in combination with dismantling measures, is just part of the remediation measures. Only deep cleaning in combination with fogging leads to the optimum results.
Millions to billions of minute droplets are produced from 3 ml/m³ and a droplet size of 5-50 µm with JATI SV Spore Destroyer. Every spore in the ambient air is reached due to this enormous numbers of droplets. No matter whether 100 or 10,000 colony-forming units (CFUs), the spores are guaranteed to be killed under any circumstances. However, if work is performed carelessly during the remediation and dust and dirt are not thoroughly removed, high concentrations of spores will quickly become established in the ambient air again due to air movements. You should bear in mind that 1 gram of house dust may contain up to 3 million spores. It is therefore imperative that building debris, dirt and dust are removed thoroughly.

The planned and often recommended fogging of cavities should be classified as critical if there is a mould infestation and visible dirt on surfaces in cavities. If 3 ml of JATI SV Spore Destroyer per cubic metre is used for fogging in these cavities, this recommended quantity for ambient air disinfection is of course not enough to kill mould on the surfaces of the cavities. The often described penetration of an aerosol mist into porous surfaces is not suitable due to the minimal amounts of active ingredient. Better results are achieved in cavities if you ensure the extensive wetting of the surface (often difficult). However, this again promotes debate that the mould cannot be removed. In principle, we recommend that the dead mould is always removed from surfaces or from the ambient air. However, there are structural conditions in which dismantling measures are not possible or are difficult to implement. Cases of this kind require individual consideration and often a compromise solution with dead mould is an advantage.

It is not advisable to use fogging to try to kill mould infestations or bacteria in screed insulation because not enough active ingredient is delivered into the insulation. We recommend the use of the JATI EDD Screed Insulation Flushing System or the JATI 2KDS Cavity Foam System.


Actinomycetes are bacteria that are heavily reminiscent of a mould colony because of their mycelium-like growth. They were previously called “ray fungi”.
After moisture damage, bacteria often account for half of all the microorganisms when you analyse the microbial infestation. Streptomyces in the actinomycete species plays a frequently dominant role here.

Actinomycetes can emit strong smells (MVOCs) that are similar to the odorous substances of some mould. A problem may occur with a hidden infestation where it is presumed that the smell is mould but it is actually actinomycetes. These in turn are frequently not registered with the usual detection methods for discovering mould.

It was previously assumed that actinomycetes do not pose a danger to human health. The extent to which the metabolites of these bacteria actually pose a danger to health does not seem to have been conclusively clarified.

We took the opportunity to use the topic of actinomycetes to test the effect of JATI Mould Remover to combat this type of bacteria. The neutral test report confirms its 100% effectiveness.

You can contact us to request the full test reports.

Types of mould

Mould is part of our natural environment. It is virtually always present outdoors and indoors.

We assume that there are more than 100,000 types of mould, but we only find a fraction of them indoors.
The following types of mould are more or less relevant in an estimated 90% of all remediation cases in the
event of a mould infestation:

  • Acremonium murorum
  • Acremonium strictum
  • Alternaria atra
  • Aspergillus niger
  • Aspergillus penicillioides
  • Aspergillus restrictus
  • Aspergillus sydowii
  • Aspergillus versicolor
  • Aspergillus westerdijkiae
  • Chaetomium globosum
  • Cladosporium cladosporioides
  • Cladosporium herbarum
  • Cladosporium sphaerospermum
  • Engyodontium album
  • Mucor plumbeus
  • Mucor racemosus
  • Penicillium brevicompactum
  • Penicillium chrysogenum
  • Penicillium citrinum
  • Penicillium decumbens
  • Penicillium digitatum
  • Penicillium expansum
  • Penicillium glabrum
  • Penicillium olsonii
  • Scopulariopsis brumptii
  • Stachybotrys chartarum
  • Talaromyces rugulosus
  • Trichoderma harzianum
  • Trichoderma longibrachiatum
  • Wallemia sebi

This list does not claim to be exhaustive.

If your question has not been answered here, please send it to us by email.
We will answer the question as soon as possible.

We use cookies to ensure that we give you the best experience on our website.