Visible mould
Growth on walls, ceilings, window frames, sills, silicone, wardrobes or behind furniture. Start with an enquiry about treatment.
01 · Healthy & Dry · Taranaki
Get help with visible mould, damp-affected surfaces and growth that keeps returning. We treat the affected areas and consider the moisture conditions behind the problem.
For homeowners, tenants and property managers across Taranaki.
Recognise the problem
Whether it is a first patch or a problem that keeps coming back, the next step depends on what you can see and what is keeping the area damp.
Growth on walls, ceilings, window frames, sills, silicone, wardrobes or behind furniture. Start with an enquiry about treatment.
Mould returns after cleaning or painting. Condensation, poor extraction, cold surfaces or a leak may still be supplying moisture.
A hidden source, unexplained damp or a need for written evidence may call for an assessment through Detections before treatment.
The treatment
The agreed work can include the following, depending on the affected surfaces, access and moisture conditions.
Some porous or water-damaged materials need repair or replacement. We will identify where surface cleaning alone is unlikely to be enough.
Werner Sevenster commonly sees recurring mould alongside trapped shower steam, cold surfaces or leaks. Cleaning a visible mark does not resolve those moisture contributors. Peeling paint and damaged wall linings need their condition checked before refinishing.
Where suitable, the agreed work can include cleaning and drying, repairs, an appropriate sealer and repainting. Protective coatings can be discussed for suitable surfaces; their use depends on the product and material, alongside moisture control.
For small household patches, follow the linked official cleaning guidance and product label. Never mix bleach with other cleaning chemicals. Widespread or recurring growth needs the cause considered.
How it works
Tell us the town, affected rooms and how long the problem has been present. You can add photographs to your enquiry.
The information may show that treatment is appropriate or that a site visit, assessment, ventilation work or repair needs to come first.
The work and price are agreed after the affected areas, access, materials and any related repairs have been reviewed.
The work follows the confirmed scope, with practical advice on the moisture factors that need attention to reduce recurrence.
Understand the problem · Detections
You receive the assessment findings, the identified cause, a recommended solution and an estimate, with a quote where possible.
For mould, dampness, condensation and suspected water leaks. Includes an on-site visit through Detections to assess the problem areas in your property.
Tell us which dates and times work for you, whether the property is occupied or vacant, and if we need to arrange key pickup. We will contact you to confirm the appointment.
Practical advice
Take care. Do not mix cleaning chemicals or disturb damaged linings. Older linings or textured materials may need asbestos identification before work starts.
The moisture matters
Cleaning removes surface growth, but moisture can remain. Condensation, ineffective extraction, cold surfaces and leaks can allow mould to return.
Cooking, showers and indoor clothes drying add moisture. Wet subfloors, plumbing leaks, and roof or cladding faults may also contribute. More than one cause can be involved.
Treatment and attention to the moisture source work together. Ventilation, repairs or further investigation may be part of the next step.
Start an enquiry
Share the affected rooms, how long the problem has been there and whether it returns. Add photographs or an existing PDF report if you have them. We will contact you about the next step.
Your questions
Have a question about mould or moisture? Read the answers below, or use the enquiry form to discuss your property.
Take it seriously, but do not panic. Damp and mouldy indoor conditions are associated with respiratory and allergic symptoms, and babies and children deserve extra care. A photograph cannot identify the mould or determine whether it is making your baby unwell. Move the cot away from the affected wall, reduce moisture and use another dry room if the room is heavily affected and one is available. Clean only a small accessible patch using official guidance. If your baby has symptoms, talk to a GP or Healthline rather than relying on a website to diagnose the cause.
Colour does not identify a mould species or establish its health risk. Many different moulds can look black on paint, silicone and window frames. The practical response is the same: remove the growth and address the moisture that allowed it to grow. A photograph can help show the location and extent, but it cannot provide a laboratory identification. Assessment can help when you need to understand the cause or obtain evidence.
A small, accessible patch on a sound surface may be reasonable to clean yourself. Tenancy Services describes diluted white vinegar or diluted household bleach for occupant cleaning, and recommends gloves, eye protection and a safety mask. Follow current official guidance carefully, use appropriate protection, ventilate and dry the surface. Never mix bleach with vinegar, acids, ammonia or other cleaners. Large, recurring, hidden or leak-related mould—and growth in damaged porous materials—needs more than another household spray.
Because the moisture is still there. Cleaning and paint may remove or hide the surface growth, but they cannot dry a cold wall, repair a leak or make an ineffective extractor vent outdoors. Recurring mould may involve condensation, cold surfaces, furniture blocking airflow, poor extraction, a wet subfloor or a building fault. Painting over active mould delays the problem rather than repairing it. The lasting answer is to deal with both the growth and the moisture source.
It should not be reduced to spraying. Depending on the property and agreed scope, work may include preparing and protecting the area, physically cleaning accessible affected surfaces, HEPA vacuuming where appropriate, suitable surface treatment, drying and completion photographs. Window frames, sills or extractor surrounds may also be included. The moisture contributor must be considered because treatment alone will not stop recurrence. Damaged porous materials or failed finishes may require removal, repair or repainting rather than surface cleaning.
Not always. If visible growth and the likely moisture source are reasonably clear and you want the area treated, a treatment enquiry may be the right start. An assessment is more appropriate when you need a written cause, evidence for insurance or a dispute, a pre-purchase investigation, or the damp keeps returning with no obvious source. A photograph is useful background, but it is not a survey or an independent report.
It depends on the cause, and photographs alone do not settle responsibility. Tenancy Services says landlords must provide and maintain the property appropriately and meet applicable Healthy Homes requirements, while tenants must ventilate, keep the home reasonably clean and remove mould as it appears. If a tenant is doing those things and the home remains damp, the landlord or property manager should be told in writing because a building or ventilation issue may need attention. This is general information, not legal advice about a particular tenancy.
The cost depends on the number and size of affected areas, access, surface materials, how far the moisture has spread, whether items can be cleaned or require replacement, occupancy and any associated ventilation or repair work. Start with the property area, affected rooms, how long the problem has been present and whether there has been a leak. After reviewing the enquiry, further photographs or a site visit may be requested before the scope and price are confirmed.
Start an enquiry for your home, rental or managed property in Taranaki. Tell us the town and affected areas so we can establish the next step.