Mould Remediation in London, Ontario
Mould in London and Southwestern Ontario usually follows water: basements wet after a river flood, a heavy rain or a sewer backup, and walls that stayed damp after a leak. 911 Restoration of London, based in west London, responds around the clock in Downtown London, Old North, Masonville and Sunningdale, Hyde Park and Oakridge, Byron and Westmount, Lambeth, White Oaks and Westminster, Highbury and Glanworth, Argyle and Huron Heights, Glen Cairn, St. Thomas, Strathroy, Ingersoll, Komoka and Ilderton, Dorchester, Chatham and Blenheim, Wallaceburg, and Leamington.
Quick answer: 911 Restoration of London provides 24/7 mould clean-up and remediation across the London area: containment, HEPA air filtration, removal of affected materials, moisture control, and repairs, with a typical 45-minute arrival in London and nearby towns and Direct Insurance Coordination. Call (226) 777-1890 for immediate help.
Why Mould Grows in London Homes
Wet basements after floods
After river floods and record rain, as London saw in 2018 and July 2024, basements can stay damp for days. Drywall, carpet and framing that stay wet can grow mould quickly, so drying fast and removing what cannot dry matters as much as the cleaning.
Backups and slow leaks that keep moisture in
Sewer backup, a weeping tile problem or a slow plumbing leak keeps a wall or floor damp long after the visible water is gone. Southwestern Public Health notes that if mould keeps coming back, the moisture problem is still there. We find the moisture source and dry it as part of remediation.
Small patch or larger job
Southwestern Public Health says three or fewer patches totalling under 1 square metre can often be cleaned by the resident. Larger areas, or mould in a heating, ventilation or air conditioning system, need a professional, with containment so spores are not spread through the house.
How We Handle Mould Remediation in London
- You call (226) 777-1890. We ask about the area, the odour, and any recent water, and we schedule an assessment.
- We inspect with moisture meters and thermal imaging to find the extent of the growth and the water source.
- We set up containment with plastic barriers and negative air pressure so spores do not spread to clean areas.
- We remove affected porous materials, HEPA vacuum and clean surfaces, and apply antimicrobial treatment.
- We dry the area to verified targets and confirm the moisture source is corrected before rebuilding.
For the national overview of this service, see Mould Remediation.
Signs You Need Mould Remediation, and What To Do First
- A musty or earthy odour in a basement, closet, or crawl space
- Dark spots or fuzzy growth on drywall, wood, or ceiling tiles
- Peeling paint or bubbling wallpaper on exterior or basement walls
- Condensation on windows, pipes, or foundation walls
- Stored boxes or furniture in the basement that feel damp
- Allergy-like symptoms that improve when you leave the house
Do not scrub, spray, or disturb visible mould, because that releases spores into the air. Keep the door to the area closed, run a dehumidifier if you have one, and stop any active leak. Then call (226) 777-1890 for an assessment.
What Affects the Scope and Timeline
The scope depends on how large the affected area is, which materials are involved, and whether the moisture source is still active. Mould on a hard surface can often be cleaned, while mould in drywall, insulation, and carpet pad usually means removal. We map the affected area and write a scope that lists every material we will clean or remove.
A small, contained area can take one to two days. A finished basement or a large area behind walls takes longer because of containment, removal, drying, and rebuilding. We do not close walls until the moisture readings confirm the area is dry.
What We Restore After Mould Growth
- Finished basements
- Drywall and insulation
- Crawl spaces and sill plates
- Attics and roof sheathing
- Bathrooms and kitchens
- Subfloors and framing
- HVAC components
- Contents stored in damp areas
Insurance and Documentation for Mould Remediation
We provide Direct Insurance Coordination when mould follows a sudden, covered water loss, with photos, moisture readings, and a written scope for your adjuster. Many policies limit or exclude mould from long-term leaks, humidity, or neglect, so check your policy and ask your carrier how mould is treated before work begins.
Why Property Owners Choose 911 Restoration for Mould Remediation
24/7 Response and Fast Arrival
We answer every call at any hour. Arrival is typically 45 minutes across London, St. Thomas, Strathroy, Ingersoll, Komoka, Ilderton and Dorchester. For Chatham, Blenheim, Wallaceburg and Leamington we dispatch a crew right away and tell you the arrival time when you call.
IICRC-Certified Technicians
Trained crews with moisture meters, thermal imaging, and the containment and disinfection equipment each job requires.
Direct Insurance Coordination, No Subcontractors
One local team documents the loss, works with your adjuster, and handles the work from emergency response through reconstruction.
We provide this service in Downtown London, Old North, Masonville and Sunningdale, Hyde Park and Oakridge, Byron and Westmount, Lambeth, White Oaks and Westminster, Highbury and Glanworth, Argyle and Huron Heights, Glen Cairn, St. Thomas, Strathroy, Ingersoll, Komoka and Ilderton, Dorchester, Chatham and Blenheim, Wallaceburg, and Leamington.
Frequently Asked Mould Remediation Questions in London
Do I need mould testing in my London home?
Can I clean mould myself?
Why does mould keep coming back in my basement?
How is mould removed safely?
Do you handle mould in Chatham, Wallaceburg and Leamington?
Related Services from 911 Restoration of London
This page is part of 911 Restoration of London. If your loss involves more than one problem, we also provide Water Damage Restoration, Sanitization Services, and Reconstruction, all handled by the same local team.
Contact 911 Restoration of London About Mould Remediation
Mould spreads as long as the moisture stays. Call us for an assessment.