Canadian spelling, same service
Mould removal
across Ontario.
Mould or mold — the work is the same, and so is the warranty.
ASM provides certified mould removal and mould remediation services throughout Ontario. Every project starts by identifying why the material is wet, because remediation that skips the moisture source is a cleaning job that fails twice.

Mould removal and mold removal are the same service — only the spelling differs. “Mould” is standard Canadian usage and is what Health Canada writes; “mold” is the American spelling used across much of the remediation trade. ASM answers to both and delivers one scope: find the moisture, contain the area, remove what cannot be restored, treat what can, and document the correction in writing.
Why the spelling matters
One organism.
Two spellings.
Canadian homeowners searching for help are as likely to type one as the other, and contractors are inconsistent about which they publish. It is worth knowing that neither spelling signals a different standard of work.
Most of the trade writes “mold”
Neither changes the remediation standard
ASM documents work under both terms
What is included
A complete scope,
not a surface fix.
Moisture-source investigation
Written scope before work starts
Work-area containment and HEPA filtration
Removal of unsalvageable porous material
Treatment of restorable surfaces
Final inspection and warranty certificate
Choosing a contractor
What to ask before you book
Ontario does not license mould remediation the way it licenses electrical or plumbing work, so the written scope and the completion record are what separate a professional job from a cleaning visit.
How to choose a mould removal company ↗- 01Is the inspection genuinely free?
- 02Do I get a written scope before work begins?
- 03How will the work area be contained?
- 04What is removed versus treated, and why?
- 05What documentation do I receive at completion?
Local mould removal
Mould removal
in your city.
ASM dispatches from Toronto across Ontario. Each local guide covers the building stock and the moisture conditions that drive this work there.
Helpful answers
Mould removal in Ontario: common questions
Is mould removal the same as mold removal?+
Yes. “Mould” is the standard Canadian and British spelling and “mold” is the American spelling. They describe the same organism and the same work. Health Canada and most Canadian public-health guidance use “mould”, while a great deal of the remediation industry writes “mold”. ASM uses both and the service is identical either way.
What do mould remediation services actually include?+
A responsible scope covers investigating why the material is wet, containing the work area, removing what cannot be restored, treating what can, and documenting the moisture correction needed so the condition does not return. Cleaning a surface without addressing the water source is not remediation.
How do I find professional mould removal near me in Ontario?+
Ask whether the inspection is free, whether you receive a written scope before work begins, what containment will be used, and whether completion documentation is provided. ASM dispatches from Toronto across Ontario and will confirm coverage for your address by phone.
Do mould removal contractors need to be certified in Ontario?+
Ontario does not license mould remediation the way it licenses trades such as electrical work. That makes documented training, insurance and written completion records the practical way to judge a contractor. ASM issues a Mould Remediation Warranty Certificate for serviced areas after final inspection.
Does ASM provide mould removal services for commercial property?+
Yes. ASM works in offices, retail units, warehouses, institutional buildings and multi-tenant residential, with containment and scheduling planned around occupants and operating hours.
Verified Google reviews
What Ontario property
owners actually say.
Great experience with them !! Professional and punctual right on time finish work so quick and fast will be referring to everyone I know. excellent customer service thank you !
I am very pleased with the work done with three year warranty. The price is very competitive compared to others and they provide with a certificate as well.
We loved working with asm mold! We had mold in our attic and they were thorough and prompt! We are very pleased with them! Thank you so much!
They are great. Ali the coordinator and Syed, his technician were super friendly and did a great job.
Same-day response
Need mould removed properly?
Start with the property address and what you are seeing. ASM will confirm coverage, explain the inspection and give you the next practical step.






