Mould is something most homeowners will deal with at some point. Knowing when it’s a small issue vs. when it’s a bigger problem can make all the difference.
At Emdecon, we see everything from minor bathroom mould to full hidden growth behind walls. The key is understanding what you’re dealing with early and before it spreads.
What Causes Mould in a Home?
Mould needs three things to grow:
- Moisture
- Organic material (like drywall, wood, or dust)
- Time
The most common causes we see are:
- Leaks (especially around showers, toilets, and sinks)
- Poor ventilation (bathrooms and basements)
- High humidity
- Previous water damage that wasn’t properly dried
👉 If moisture isn’t addressed, mould will keep coming back, no matter how much you clean it.
Signs You Might Have a Mould Problem
Some mould is obvious, but a lot of it isn’t.
Watch for:
- Musty or damp smells
- Discoloration on walls, baseboards, or ceilings
- Peeling paint or bubbling drywall
- Warped baseboards or soft materials
- Recurring mould after cleaning
In many cases, what you see on the surface is only a small part of what’s behind the wall.
Is It Safe to Clean It Yourself?
For very small areas (like light surface mould on tile), cleaning may be enough.
But DIY cleaning is not recommended when:
- The area is larger than a few square feet
- Materials are soft, damaged, or breaking down
- Mould keeps coming back
- The source of moisture is unknown
- It’s near HVAC systems or behind walls
👉 Cleaning the surface doesn’t remove what’s underneath.
What Happens During Professional Mould Remediation?
A proper remediation goes beyond just cleaning.
At Emdecon, our process typically includes:
- Identifying and addressing the moisture source
- Containing the affected area to prevent spread
- Removing contaminated materials (drywall, baseboards, etc.)
- Treating exposed surfaces with antimicrobial solutions
- Air filtration using HEPA systems
- Cleaning and preparing the area for rebuilding
Our goal is always to fix the problem properly the first time, not just temporarily.
How Much Does Mould Removal Cost?
Costs can vary depending on how far the mould has spread.
Typical ranges:
- Minor surface issue: $500 – $1,500
- Small contained area (like a bathroom wall): $1,500 – $4,500
- Larger or hidden damage: $4,500 – $7,500+
👉 The biggest factor is whether the mould is only visible or has spread behind materials.
Does Homeowners Insurance Cover Mould?
In some cases, yes.
Coverage usually depends on the cause:
- Sudden issues (like a pipe leak) may be covered
- Long-term moisture or neglect typically is not
We can provide:
- Detailed documentation
- Photos
- Scope of work
to help support a claim if applicable.
When Should You Call a Professional?
If you’re unsure, it’s always better to ask.
You should reach out if:
- The mould is spreading
- Materials are deteriorating
- You suspect it’s behind walls
- There’s a strong odour
- You just want peace of mind
Final Thoughts
Mould is more than just a cosmetic issue; it’s a sign that something isn’t right behind the scenes.
The sooner it’s properly addressed, the easier (and more affordable) it is to fix.
Need Help with Mould in Your Home?
At Emdecon, we specialize in safe, thorough, and judgment-free mould remediation across Eastern Ontario.
Whether it’s a small concern or something more extensive, we’re here to help you figure out the next step, without pressure.
👉 Request a quote today or reach out to speak with us directly.