Signs of Mould in Commercial Buildings—and What to Do About It

Can something you can barely see damage your building and your business? Yes, and that something is mould. Mould in commercial spaces often grows silently, spreading behind walls, under flooring, and inside ventilation systems. It doesn’t just ruin surfaces—it affects air quality and can lead to serious health problems for your employees and customers.

Mould problems are common in older buildings, especially in areas with poor ventilation or water damage. If your property is in Winnipeg, you may already know that our cold winters and humid summers create the perfect conditions for mould growth. This makes early detection and timely action essential.

Visible Signs on Walls, Ceilings, and Floors

One of the most obvious signs is visible mould spots. These can appear in many forms—black, green, white, or even orange patches. You might find them on drywall, ceiling tiles, carpet edges, or near windows.

In commercial properties like offices, warehouses, and retail spaces, mould often shows up after water damage or leaks. Regular inspections can help catch these signs early. Ignoring them can lead to costly repairs and damage to your business’s reputation.

Musty or Damp Odours Indoors

Have you noticed a stale or musty smell in certain rooms? That scent often comes from mould growing in hidden areas, such as under carpets or behind walls. It’s a red flag you shouldn’t ignore.

Odours may be strongest in basements, restrooms, kitchens, or anywhere moisture collects. If cleaning doesn’t eliminate the smell, mould could be the cause. A professional mould remediation company Winnipeg can investigate and pinpoint the problem.

Increased Employee Illness or Complaints

If your staff begins reporting health issues like headaches, coughing, allergies, or breathing difficulties, mould could be affecting the air quality.

This is especially concerning in buildings with closed HVAC systems. Mould spores can travel through the air and reach every room. A growing number of employee complaints may signal that it’s time to bring in mould remediation services Winnipeg.

Past or Present Water Leaks

Water damage is one of the leading causes of mould growth. Even small leaks—such as under sinks, near HVAC units, or in ceilings—can trigger mould problems if not handled quickly.

If your building has had a roof leak, plumbing issue, or flooding event, you should assume that mould might be present. Even after drying the area, mould can still grow behind walls or inside insulation.

Warping, Peeling, or Bubbling Surfaces

Paint that bubbles, wood that warps, or wallpaper that peels may be a sign of moisture buildup behind the surface. This often happens when mould feeds on wood or drywall and pushes the material outward.

If you spot these signs, check the area more closely. These subtle clues often point to larger problems behind the surface that need immediate attention.

Condensation and High Indoor Humidity

Condensation on windows or walls indicates high humidity—another condition that encourages mould growth. Areas with poor air circulation and no dehumidifiers are especially at risk.

Humidity over 60% can create ideal mould conditions. Using a hygrometer to measure indoor moisture levels can help you monitor the situation.

What You Should Do Next

Once you notice signs of mould, don’t delay action. Mould spreads fast and gets harder to remove over time. Attempting to clean it with bleach or household cleaners may only worsen the problem by releasing more spores.

The best solution is to contact a professional mould remediation company Winnipeg. Experts will assess the extent of the damage, contain the area, and remove mould safely.

These teams use proper safety gear, tools, and filtration systems. They not only clean the visible mould but also address the cause—like a hidden leak or poor airflow. That’s what makes mould remediation services Winnipeg a smart choice for business owners.

Why Prompt Remediation Protects Your Business

Mould doesn’t just harm buildings. It can cause health issues, damage inventory, and even lead to lawsuits or shutdowns in extreme cases.

Quick action shows that you care about your employees, customers, and your business reputation. It also protects your investment in your property.

By relying on mould remediation services Winnipeg, you solve the problem completely—without risking incomplete DIY jobs or temporary fixes.

Final Thoughts

Mould in commercial buildings is more common than you think, but it doesn’t have to become a major issue. Stay alert to the signs—strange smells, visible spots, peeling walls, and employee complaints.

Then take the right next step: call a trusted professionalmould remediation company Winnipeg. With expert help, you can clear the mould, fix the source, and restore your building’s safety.

Need help getting started? Let us know, and we can guide you toward the right solution.

FAQs

1. What are the most common signs of mould in commercial buildings?
Visible black or green spots, musty odours, peeling paint, warped surfaces, and employee complaints about health issues are common signs of mould.

2. Can mould affect the health of employees and customers?
Yes. Mould exposure can lead to headaches, allergies, coughing, breathing issues, and fatigue—especially in enclosed spaces with poor ventilation.

3. How soon should I act after noticing signs of mould?
Immediately. Delaying treatment allows mould to spread, increases removal costs, and may result in more damage to your building.

4. Why should I hire a professional mould remediation company Winnipeg instead of cleaning it myself?
Professionals have the right tools, safety procedures, and experience to fully remove mould and prevent its return. DIY methods often miss hidden growth or worsen the problem.

5. What causes mould to grow in commercial spaces?
Mould grows in areas with moisture, poor ventilation, or past water damage. Leaks, humidity, condensation, and flooding are typical triggers in commercial properties.