Professional mould removal for healthy spaces
therlo connects you with experts for sustainable mould removal. Protect your home and health with proven methods and state-of-the-art technology.
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Sustainable Problem Solving
Mould Infestation: Causes, Risks and First Steps
Locate sources of moisture
Recognising health hazards
Initiate immediate measures
Request a professional analysis
The process of professional mould removal
Professional mould removal follows a structured, multi-step process to address not only the symptoms but, more importantly, to eliminate the cause sustainably. It all starts with a detailed cause analysis by a certified expert. Using moisture measurements and sometimes thermographic methods, the source of the problem is accurately located. This is followed by professional mould removal, where affected materials are removed under strict safety precautions (sealing off, maintaining negative pressure). This is followed by a thorough disinfection of the affected areas to kill any remaining mould spores. A final fine cleaning with special HEPA vacuum cleaners ensures that no spores remain in the room air. The remediation is only considered complete after a success check, often through another air germ measurement. This holistic approach guarantees a healthy indoor climate and protects the value of your property.
Our services in detail
Comprehensive solutions against mould
Case analysis
Precise localisation and root cause analysis.
Proper Disposal
Safe removal of visible and invisible mould infestation using certified procedures.
Disinfection
Elimination of spores and bacteria.
Odour Neutralisation
Elimination of musty smell.
Technical Drying
Professional dehumidification of masonry and building structure for sustainable root cause mitigation.
Fine cleaning
Removal of the last traces from surfaces.
Recovery
Renovation and refurbishment of the affected areas.
Long-term prevention
Consultation and installation of preventive systems.
Air purification
Use of HEPA filters for healthy indoor air.
From analysis to prevention – we connect you with the right expert for every challenge.
Mould problem detected?
Act now.
Why DIY Mold Removal Often Isn't Enough
Reaching for commercial mould sprays from the DIY store is tempting when faced with visible infestation, but this approach carries significant risks and is rarely sustainable. Such means often only treat the surface and merely bleach the mould, while the mycelium, the network of fungi within the material, remains intact. Improper wiping or brushing can also disperse myriad mould spores into the air, spreading the infestation to other areas. More critically, the underlying cause of moisture—be it a leaking pipe, a thermal bridge, or incorrect ventilation behaviour—remains undetected and untreated. Without addressing the root cause, the mould will inevitably return. Additionally, without professional protective gear, you're exposing yourself to significant health risks from inhaling the spores.
The different types of mould and their dangers
Worldwide, there are over 100,000 species of mould, some of which are commonly found indoors. Among the best-known are green mould (e.g., Aspergillus), which often grows on food or in potting soil, and white mould, which is initially difficult to detect and often mistaken for salt efflorescences. Special attention is required for black mould (e.g., Stachybotrys chartarum), which thrives on heavily damp, cellulose-rich materials such as plasterboard or wallpaper. Many of these mould species can trigger allergies, respiratory irritations, and asthma attacks. Some, like certain Aspergillus or Stachybotrys species, are also capable of producing mycotoxins (fungal poisons) which can lead to serious health problems with prolonged exposure. Accurate identification is therefore essential for risk assessment.
Mould Prevention: How to Protect Your Home Sustainably
Effective mould prevention is based on controlling humidity and eliminating sources of moisture. The key is correct ventilation behaviour: Ventilate several times a day for 5-10 minutes by fully opening the windows, rather than leaving them tilted. This effectively replaces the humid indoor air with drier outside air. Monitor the relative humidity with a hygrometer; it should ideally be between 40% and 60%. Be sure to remove moisture where it forms, for example, using extractor hoods in the kitchen or ventilating immediately after showering. Place furniture, especially against exterior walls, a few centimetres away to ensure air circulation. Regular inspections for leaks in roofs, windows, and water pipes help to identify potential problems early.
Technological innovations in mould prevention
Modern mould remediation relies on highly specialised technologies for efficient and thorough restoration. For precise detection of moisture nests, resistance measurement devices and infrared thermography cameras are used, which make thermal bridges and damp spots visible without damage. In disinfection, the cold fogging method has become established: Here, a disinfectant (e.g., hydrogen peroxide-based) is atomised into microscopically fine droplets that penetrate even the smallest cracks and pores, effectively killing mould spores. Throughout the entire restoration process, powerful air purifiers with HEPA filters of class H13/H14 ensure that 99.995% of all airborne particles, including spores, are filtered out of the indoor air to prevent the spread of contamination.
Tested Quality
Only certified partners
Health in Focus
Secure, gentle procedures
Transparent Costs
Clear, fair offers
Mould in Rental Property: Rights and Responsibilities for Tenants and Landlords
Mould infestation in rental properties is a common point of contention that requires clear legal regulations. In principle, the landlord is obliged to maintain the rented property in a contractual and non-hazardous condition. If a tenant discovers mould, they must report it to the landlord without delay (defect report). The landlord is then responsible for determining the cause and rectifying the issue. If the landlord proves that the mould was caused by the tenant's incorrect heating or ventilation behaviour, responsibility may shift to the tenant. Until the defect is rectified, the tenant may be entitled to a rent reduction, the extent of which depends on the degree of infestation. To avoid legal disputes, a swift, professional, and neutral analysis by a specialised company, such as the experts mediated by therlo, is the best approach.
The role of insurance in mould damage
Whether an insurance company covers the costs for mould remediation depends solely on the cause of the damage. The building insurance generally applies if the mould is a direct result of an insured water damage event (e.g., a burst pipe), storm, or hail. It's important to report the damage immediately. Contents insurance can cover affected inventory. However, there is no obligation to pay if the mould develops due to gradual processes such as inadequate building sealing, thermal bridges, or improper user behaviour (insufficient ventilation). Precise documentation and a professional investigation of the cause are crucial to successfully claim with the insurance.
Health Aspects: Mould as a Trigger for Allergies and Respiratory Diseases
The health risks associated with indoor mould are well-documented scientifically and should not be underestimated. The spores, cell wall components, and metabolic products (MVOCs) of mould can trigger a range of reactions in humans. Most commonly, these include allergic symptoms such as a runny nose, itchy eyes, cough, or skin rashes. Mould can trigger or worsen asthma attacks, particularly in susceptible individuals. Especially concerning is the potential production of mycotoxins by certain types of mould. These fungal toxins can weaken the immune system with chronic exposure and cause non-specific symptoms like headaches, concentration issues, and fatigue. Mould is a serious health risk especially for individuals with weakened immune systems, children, and elderly people.
How can I tell if it is dangerous black mold?
The safety of children and pets is the top priority during mould remediation. Professional specialists brokered by therlo deliberately use health-friendly methods and substances. Instead of aggressive chlorine compounds, modern, biodegradable disinfectants are used, such as those based on fruit acids or stabilised hydrogen peroxide, which breaks down into water and oxygen after use. During the renovation work, the affected areas are strictly isolated from the rest of the home and secured with negative pressure systems to prevent the spread of spores or agents. Once the work is completed and a thorough fine cleaning has been carried out, it is ensured that the rooms are completely safe and healthy again for all family members, whether two-legged or four-legged.
