Commercial Roof Repair in Burlington, ON
Commercial roof repair in Burlington is about two things: stopping the water quickly and proving the fix to whoever signs off on the invoice. Fixall Roofing repairs flat membrane and metal roofs on plazas, warehouses, offices and condo buildings, and every repair comes with dated photos and a written note on what failed.
Property managers, facility teams and building owners call us when a tenant reports a drip, a ceiling tile falls or an inspection flags open seams. We work on TPO, EPDM, PVC, SBS modified bitumen, built-up and metal roofs, using materials that match the existing system.
Flat roof leak repair is also a budgeting question. Each visit should tell you whether the roof needs one patch, a season of targeted repairs or a bigger plan, so you can make that call with evidence instead of guesswork.
- 15+ years experience
- 700+ jobs completed
- Fully insured + WSIB
- Working at Heights certified
- 1-year labour warranty
- Open 24/7
Commercial Roof Repair for Flat and Metal Roofs
A repair visit covers leak investigation, membrane and seam repair, flashing and drain repair, and a short report on what we found. Where a repair is only a stopgap, the report says so and explains why.
We carry patch materials for the common systems on the truck: TPO and PVC membrane for hot-air welding, EPDM patches with primer and seam tape, SBS cap sheet and cold-applied mastics. Matching the existing material matters, because a tar patch on a single-ply roof contaminates the membrane and makes the next proper repair harder.
On SBS and built-up roofs, we cut out blisters and failed laps and install new cap sheet with a torch or cold adhesive, depending on fire risk at that spot. Near wood blocking, combustible insulation or rooftop units, cold-applied materials are the safer choice.
On metal roofs, most repairs involve exposed fasteners, end laps and flashings rather than the panels themselves. We replace worn fasteners with oversized screws and new washers, reseal laps with butyl tape and rebuild flashings at curbs and walls.
Common Commercial Roof Failures
Most commercial leaks come from a short list of failure points. This is what we find on Burlington roofs and how each one is properly repaired.
| Failure | Typical cause | Repair |
|---|---|---|
| Seam separation | Aged adhesive or tape, poor original welds | Clean, prime and re-tape or re-weld; cover strip over the seam |
| Punctures | HVAC and satellite trades, dropped tools, hail | Round-cornered patch welded or taped over the cleaned area |
| Curb and penetration flashing | Shrinkage, failed sealant, unflashed new equipment | Rebuild flashing to the manufacturer's detail |
| Clogged drains and scuppers | Leaves, gravel, debris from tenants | Clear, replace strainers, repair clamping ring seal |
| Ponding | Deck deflection, missing taper, raised drains | Add tapered insulation or crickets, lower or add drains |
| Blisters | Trapped moisture or poor adhesion | Cut, dry and patch; investigate wet insulation |
| Failed parapet caps | Open joints, loose cleats, rust | Reset or replace caps with sealed joints and new cleats |
Two failures need extra attention on Burlington roofs. Freeze-thaw cycles widen small seam voids each winter, and snow drifted against rooftop units melts into flashings that were only built to shed rain.
Finding Leaks on Large Flat Roofs
On a flat roof, water rarely drips straight down from the hole. It runs along the deck flutes or between insulation boards and appears at a light fixture or column joint 10 or 20 metres away.
We start above the leak and work upslope, checking every seam, flashing and penetration in the path. Where the source is not obvious, an infrared scan at dusk shows wet insulation as warm patches, and a capacitance meter confirms moisture under the membrane without cutting it.
Core cuts settle the question when readings are unclear and show how far the water has spread through the insulation. If wet areas are large, a full commercial roof inspection with a moisture survey gives you the whole picture before money goes into piecemeal repairs.
Temporary vs Permanent Repairs
A temporary repair stops water now, in conditions where a proper repair cannot be made: rain, snow, ice or a membrane too wet to weld or tape. It might be a sealant bead, a peel-and-stick patch or a tarp weighed down across a damaged area.
The permanent repair follows once the roof is dry and above the minimum temperature for the adhesive or weld. It uses the manufacturer's materials and details, and it replaces the temporary patch rather than layering over it.
Both visits are listed separately on the invoice and the report. That way you know which areas are still on a temporary fix and can schedule the follow-up.
24/7 Commercial Leak Response
When you call, we ask where water is showing, what is under it and whether there is safe roof access. We then give you an honest arrival estimate based on the time, the weather and where our crew is, rather than a promise we cannot keep.
While the crew is on the way, a few steps limit damage inside. Our 24/7 emergency response page covers storm damage, tarping and what happens after the first call.
- Move stock, files and electronics out of the drip zone and cover racking with poly sheeting
- Put buckets or a wet vac under active drips and keep walkways dry and coned off
- Shut off power to light fixtures or equipment that water is reaching
- Tell affected tenants and note the time and location of each leak for the report
- Clear roof hatch and ladder access so the crew can get up without delay
Repair Reports for Property Managers
Every repair ends with a written report you can forward to the owner, the tenant or the insurer. It is short, factual and tied to a roof plan so the next contractor can find the same spot.
When the report shows repairs clustering in one area year after year, that pattern becomes part of your capital planning. It is often the clearest evidence that a section needs coating and restoration or replacement rather than another patch.
- Before and after photos of each repair, with date and time
- Repair locations marked on a simple roof plan
- Cause of each leak and the materials used to fix it
- Other defects spotted on the roof, ranked by urgency
- Budget figures for recommended follow-up work
Repairs That Keep Manufacturer Warranties Intact
Many commercial roofs are still under a manufacturer warranty, and an unauthorized repair can give the manufacturer grounds to deny a future claim. Before touching a warrantied roof, we ask for the warranty document and check its repair requirements.
Some manufacturers allow emergency temporary repairs by anyone but want permanent repairs made by an approved applicator or reported to them. Where that applies, we make the roof watertight, document it and tell you exactly who needs to be notified.
On roofs outside warranty, we still follow the manufacturer's published repair details and use compatible materials. That keeps the roof eligible for a restoration warranty later, if it ever goes that route.
Commercial Repair FAQs
How fast can you respond to a commercial roof leak?
We answer 24/7 and give you a realistic arrival time on the call, which depends on the hour, the weather and crew location. We work within about 30 minutes of Burlington, so travel time is short once a crew is free.
Can you repair a roof another contractor installed?
Yes, most of our repairs are on roofs we did not install. If the roof is under a manufacturer warranty, we check its terms first so the repair does not put your coverage at risk.
When does repairing stop making financial sense?
When yearly repair spend starts approaching the annual cost of a new roof spread over its life, or when cores show widespread wet insulation, patching is just buying time. At that point a commercial roof replacement or restoration plan is usually the better use of the budget.
Report a Commercial Roof Leak
Tell us the building address, where water is showing and how to reach the roof. We will stop the leak, document the cause and send you a repair report you can file or forward.
Phones answered 24/7, including emergencies.
- 1We call you back to confirm the details.
- 2We inspect the roof and attic and take photos.
- 3You get a written scope and price. No pressure.