Hidden Mould in Homes and Workplaces - What You Need to Know

Hidden mould can grow in walls, ceilings and subfloors without visible signs. Learn who it affects and when professional mould testing is needed.

Mould is not always visible.

In many homes and commercial buildings, mould grows out of sight inside wall cavities, ceiling spaces, subfloors and behind fixtures. By the time it becomes visible, it has often been present for an extended period.

Hidden mould commonly develops due to:

• Roof leaks or condensation

• Plumbing leaks inside walls

• Poor ventilation in bathrooms and kitchens

• Inadequate moisture control

Who is affected by mould exposure?

Mould exposure affects people differently. Some individuals may experience symptoms quickly, while others may be impacted over time.

Groups more commonly affected include:

• Children and older adults

• Immunocompromised individuals

• People with respiratory sensitivities

• Tradespeople working in roof cavities and subfloors

  
  

Because mould can be airborne and invisible, professional mould testing and assessment is often the only reliable way to confirm its presence and determine whether indoor air quality is safe.

Healthy Property Ltd provides professional mould testing and remediation services throughout New Zealand.