Mould Inspection by a Chartered Engineer
Anyone can point at a black patch on a ceiling. A mould inspection worth paying for tells you where the water is coming from and what building defect is letting it in. Our Chartered Engineers trace mould back to its source, so you fix the actual problem instead of painting over it and watching it return.
Why Most Mould Problems Are Really Building Problems
Mould is a symptom. It grows because moisture is getting somewhere it shouldn't and staying there. That might be a failed shower waterproofing membrane, a roof leak, poor subfloor ventilation, rising damp, blocked drainage against a wall, or condensation from a building that can't breathe. Treat the mould without finding the moisture source and it comes straight back, usually within weeks.
This is exactly where a Chartered Engineer sees a property differently to a cleaner or a remediation salesperson. A mould inspection with BINM is a building-diagnostic inspection. We assess the affected areas, look for the water pathway behind them, and identify the structural or building defect that is allowing moisture in. You get an answer you can act on, not just a quote to wipe down a wall.
Find the cause, fix it once.
What a BINM Mould Inspection Covers
Building-Diagnostic Mould Inspection
A visual and moisture-focused inspection of the affected areas and the building elements around them. We use moisture readings and building knowledge to trace where the water is coming from, assess how far it has travelled, and identify the defect responsible. You receive a plain-English report describing the mould found, the likely cause, and what needs to happen to stop it returning.
What We Look for During a Mould Inspection
A mould inspection is only as good as its understanding of where water moves through a building. These are the sources we investigate.
Failed Wet Area Waterproofing
Showers, bathrooms and laundries are the single most common source of internal mould. We check for signs of membrane failure behind tiles and at floor junctions.
Roof and Ceiling Leaks
Water entering through the roof can travel a long way before it shows as a stain. We trace ceiling mould back toward the actual entry point.
Subfloor and Rising Damp
Poor subfloor ventilation and rising damp bring persistent moisture into walls and floors from below, often unseen until mould appears at skirting level.
Drainage and Site Fall
Water pooling against the building because of poor drainage or ground that slopes the wrong way is a frequent and fixable cause of ongoing damp.
Condensation and Ventilation
Some mould is caused by a building that traps humid air. We identify where ventilation is inadequate and what is driving the condensation.
Window and Facade Penetration
Gaps around windows, failed seals and facade cracking let water into wall cavities where it feeds mould you cannot see from inside.
What a Mould Inspection Is, and What It Isn't
We'd rather you know exactly what you're booking. Here's the honest scope.
We diagnose the building cause
Our strength is identifying the moisture source and the building defect behind the mould, then telling you what to fix. That is the part most inspections skip.
Laboratory air sampling is separate
If you need formal air-quality or spore-type lab testing, for example for a health or insurance matter, that is carried out by a specialist occupational hygienist. We can tell you when that is worth arranging.
Remediation is a separate trade
Physically removing and treating mould is remediation work. We don't sell remediation, which means our assessment of what actually needs doing is independent.
Best paired with a building inspection
If you're buying, a mould inspection works best alongside a full inspection so the moisture findings sit in the context of the whole property. Full details on pre-purchase inspections
Inspect. Diagnose. Report.
Three steps from booking to a report that pinpoints the cause.
Book
Call 1800 796 776 or book online. Tell us where you're seeing mould, or that you want it checked as part of a purchase.
Inspect
Your engineer inspects the affected areas and the building around them, using moisture readings to trace the water pathway.
Report
You receive a plain-English report with the likely cause, how far the moisture has spread, and what needs to happen to stop it.
How Much Does a Mould Inspection Cost?
Pricing is confirmed before you book, based on the size of the property and the extent of the areas to be assessed.
All pricing confirmed before booking. Adding a mould inspection to a building inspection is usually more cost-effective than booking it separately.
Mould Inspection FAQs
The questions people ask us most often about mould inspections.
The cost depends on the size of the property and how much of it needs assessing. Adding a mould inspection to a pre-purchase or building inspection is usually more cost-effective than a standalone visit. Contact us and we'll confirm the price before you book.
Our mould inspection focuses on finding the building cause, the moisture source and defect that let the mould grow. Laboratory mould testing, which samples air or surfaces to identify spore types and concentrations, is a separate service carried out by an occupational hygienist. If you need that, usually for a health or insurance matter, we'll tell you.
Because cleaning removes the mould but not the moisture feeding it. Until the water source, whether that's a leaking shower, poor ventilation or a drainage issue, is fixed, the mould will return. Finding and reporting that source is the whole point of our inspection.
If you've seen mould, damp staining or smelled a musty odour during an inspection, yes. Mould can indicate a hidden and potentially expensive moisture problem. Booking it alongside a pre-purchase inspection gives you the full picture before you commit.
No, and that's deliberate. Removal and treatment is remediation work carried out by a separate trade. Because we don't sell remediation, our assessment of what actually needs doing stays independent and in your interest.
Mould can affect indoor air quality and is a particular concern for people with asthma or allergies. Our role is to find and report the building cause so the moisture problem can be resolved. For health-specific advice or air-quality testing, an occupational hygienist or medical professional is the right person to speak to.