One accountable team for the whole loss: emergency response, drying and cleanup, the full insurance claim, and the rebuild.
Firstline Restoration provides 24/7 Commercial Sewage Backup Cleanup across the GTA. We respond within 45 minutes, mitigate the damage, and document everything for your insurer, licensed, insured, and WSIB-covered.
Calling is fastest for active emergencies. 45-min emergency response · free assessment · we work directly with your insurance.
Calling is fastest for active emergencies. 45-min emergency response · free assessment · we work directly with your insurance.
Firstline Restoration is 5-star rated on Google and available 24/7/365 for emergency restoration, claim support, and reconstruction.
When sewage backs up into your building, Firstline Restoration contains it, removes contaminated material, cleans and sanitizes, dries the structure, documents everything for insurance, and rebuilds what came out, one accountable team, fast, with the health risk controlled.
A commercial sewage backup is Category 3 black water. It carries bacteria, viruses, and other pathogens that put staff and tenants at risk and can trigger a health-code violation or forced shutdown if it is not cleaned up properly, lost revenue every hour the doors stay closed.
Firstline is open 24/7/365 with a 45-minute emergency response. We move fast on the sanitization that lets you reopen, and we own the whole loss, first extraction truck to final rebuild, so you are not chasing separate vendors during an emergency.
Commercial sewage backups are graded as Category 3, the most contaminated class of water loss, because they carry raw sewage, pathogens, and toxins straight into your space.
That is why a sewage backup is not a mop-and-bucket job. Porous materials that touch black water, drywall, insulation, flooring, baseboards, ceiling tile, usually have to come out rather than be cleaned in place. Restrooms, commercial kitchens, floor drains, and basements all have to be treated as contaminated until they are cleaned, sanitized, and verified dry. Health inspectors and many leases require that before staff and the public come back, so Firstline manages the process to a defined standard you can document and reopen on.
Call us the moment sewage surfaces. Black water spreads fast, the contamination keeps getting worse, and the longer it sits, the more material has to be removed.
This page is for businesses, property managers, and facility teams. If the backup is in a house, condo unit, or finished basement, our sewage backup restoration hub covers that. For the building-wide picture, see commercial restoration services and commercial water damage restoration.
We arrive fast, stop the source where we can, and contain the contaminated zone so black water does not spread into clean areas, adjoining suites, or your HVAC, closing off restrooms, kitchens, and floor drains and getting unprotected people out.
We extract the standing sewage and remove the porous materials black water has ruined, flooring, drywall, insulation, baseboards, and affected contents. As a biohazard cleanup situation, it is handled with the controls Category 3 work demands.
We clean and sanitize every contaminated surface, deodorize to kill the smell at its source, and dry the structure so mold cannot take hold behind your walls, the step that clears a health inspection and reopens your doors.
We document the full loss for your insurer as we go, then rebuild what came out instead of handing you to another contractor. When the job goes past cleanup, our reconstruction services put the space back to pre-loss condition or better.
Firstline works with all insurance carriers and manages the claim from the first photo to the final rebuild invoice, so your team can focus on the business instead of paperwork.
We document the contamination, affected materials, sanitization, and rebuild scope, and manage the communication with your adjuster directly to help you pursue the full value you are owed. We do not guarantee coverage, approval, or a specific payout, those decisions belong to your insurer.
For dedicated claim support, see insurance claim restoration assistance. We work directly with your insurance company and bill them directly where the carrier allows it. On a covered claim, insurance pays for the approved work and you normally pay only your deductible.
A backup left to sit, or cleaned up halfway, leads to lingering odour, mold in the wall cavities, failed health inspections, tenant complaints, and a longer shutdown, and leaves contamination behind that puts staff and customers at risk. For property managers, condo corporations, facility teams, and business owners, the fastest path back to open is a single team that contains the loss, sanitizes to a verifiable standard, dries it properly, and rebuilds, with no handoffs that stall the job.
Firstline Restoration has experience supporting residential, commercial, industrial, institutional, managed-property, and large-loss restoration projects across Ontario.
One accountable team: We contain, remove, sanitize, dry, document, and rebuild, no handoffs mid-job.
Open 24/7/365, 45-minute response: Sewage does not wait, and neither do we.
Fast sanitization to reopen: We prioritize the cleaning and drying that clears inspection and opens your doors.
20 years in business, 5-star rated: Trusted by Toronto-area businesses and property managers.
Licensed, insured, WSIB covered: Every trade on a Firstline project is fully licensed, insured, and works to code.
Insurance handled end to end: All carriers, claim run from first photo to final rebuild.
We respond across the Greater Toronto Area, with dedicated pages for our busiest cities.
Firstline Restoration provides commercial sewage backup restoration across Toronto and surrounding Ontario service areas.
See the full regional coverage on our service areas page.
See Firstline Restoration project examples, restoration work, claim-support documentation, and reconstruction experience across Toronto and surrounding Ontario service areas.
Talk to Firstline Restoration, 24/7 emergency response, insurance claim support, and full reconstruction.
Companies We've Worked With
Firstline Restoration serves commercial, institutional, and property-management clients across the GTA.
A sewage backup is Category 3 black water, the most contaminated class of water loss. It carries bacteria, viruses, and other pathogens that put staff and the public at risk and can trigger a health-code violation if it is not cleaned and sanitized properly. That is why it has to be treated as a biohazard, not an ordinary spill.
We are open 24/7/365 with a 45-minute emergency response. Sewage spreads and the contamination gets worse the longer it sits, so we move fast to contain the area and start the cleanup that gets you back open.
We prioritize the sanitization and drying that lets a space pass inspection. The timeline depends on how far the sewage spread and how much contaminated material has to come out, but our whole approach is built around reopening you as fast as it can be done safely.
We contain the contaminated zone, extract the sewage, remove the porous materials that black water has ruined, clean and sanitize every affected surface, deodorize, dry the structure, document the loss for insurance, and rebuild what came out, one team, start to finish.
Yes. Commercial restrooms, kitchens, floor drains, and basements are the most common sources, and contamination often travels well past the visible mess through drains and wall cavities. We trace the spread and treat every affected area as contaminated until it is sanitized and verified dry.
Yes. We contain the affected space so black water and odour do not spread into clean areas or shared HVAC, keep unprotected people out of the contaminated zone, and sanitize the space to a standard you can document before anyone returns.
Yes. We work with all insurance carriers and manage the claim from the first photo to the final rebuild invoice, communicating with your adjuster directly. We help you pursue the full value you are owed under your policy. We do not guarantee coverage or a specific payout, since those decisions belong to your insurer.
No. Firstline removes the contaminated material and also rebuilds what came out, so you are not handed off mid-job. When the work goes past cleanup, our reconstruction team puts the space back to pre-loss condition or better.
Keep staff and the public out of the affected area, do not walk through the sewage, and do not start moving or throwing out contaminated material, documenting it first protects your claim. Call us right away so we can guide you and get a team moving.
Call (416) 900-3508 anytime or submit the form on this page. Calling is the fastest option during an active backup.
Call Firstline Restoration 24/7/365 for emergency help, full insurance claim process support, and end-to-end property restoration.
We work with all insurance carriers, help manage documentation and communication, and support the project through restoration and reconstruction when needed.
Calling is fastest for active emergencies. 45-min emergency response · free assessment · we work directly with your insurance.
Firstline Restoration provides 24/7 emergency response for commercial sewage backup cleanup across Toronto and surrounding Ontario communities.
