Mississauga Flat Roof Replacement
- Covered by WSIB work insurance
- 25+ Years of Experience
- Best Warranty In the Industry
- Locally Owned And Operated
- Fully Licensed and Insured
Professional Mississauga Flat Roofers
- Over 1230+ projects completed
The leaves are changing color and falling from the trees, which can only mean one thing—fall is here! As temperatures begin to cooler and the days grow shorter, now is the perfect time to start thinking about replacing your flat roof. We are the company to call. Above It All Roofing is a full-service roofing contractor that has been replacing and installing roofs for over 25 years. We have the experience and knowledge to get the job done right, the first time. We pride ourselves on our quality workmanship and customer service. We will work with you every step of the way to ensure that your roof is replaced quickly and efficiently. You won’t find a better company than Above It All Roofing.
If you have a flat roof in the Mississauga area and are looking for a professional, affordable solution to your problem, look no further. Above It All Roofing offers complete flat roof replacement services from our experienced team of professionals. We’ll fix any leaks you may be experiencing today!
We have over 25 years of experience installing and replacing roofs in Mississauga. For a free consultation, contact us today!
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Why Choose Us?
Above It All Roofing is a full-service roofing company that has been serving the Mississauga area for over 25 years. We are proud to offer our customers a wide range of services, including flat roof replacement. Our team of experienced roofers can quickly identify and repair any issues with your flat roof, ensuring that it will continue to protect your home or business for years to come.
Above It All Roofing has been providing quality flat roof replacement for over 25 years. We are a family-owned and operated business, and we take pride in our workmanship. Our team of experienced professionals will work quickly and efficiently to install or replace your flat roof, and we stand behind our work with a 100% satisfaction guarantee. When it comes time to choose a contractor for flat roof replacement, choose Above It All Roofing for quality workmanship and exceptional customer service.
Our Flat Roof Replacement Process
- Free Inspection. We assess your roof’s condition, drainage, and membrane wear, and identify whether repair or replacement makes sense.
- Clear, Written Quote. You get an itemized breakdown of materials, labour, and timeline, no vague estimates, no surprise add-ons later.
- Material Selection. We walk you through TPO, EPDM, and modified bitumen options based on your roof and budget, and answer any questions before work starts.
- Installation. Most flat roof replacements are completed in one to three days depending on size and complexity. We protect your property, remove old material properly, and install to manufacturer specifications.
- Final Walkthrough. We inspect the finished roof with you, confirm drainage is working correctly, and go over your warranty coverage.
Flat Roofing Materials We Install
Not all flat roofs are built the same. We install and repair the systems most common on Mississauga homes and additions:
- TPO (Thermoplastic Polyolefin). A durable, energy-efficient single-ply membrane that resists UV damage and tearing. A popular choice for garages, additions, and low-slope home sections.
- EPDM (Rubber Roofing). A long-lasting synthetic rubber membrane known for flexibility and strong performance in temperature swings, common in Ontario winters and summers alike.
- Modified Bitumen. A reinforced asphalt-based system installed in layers, a reliable option for homeowners wanting a proven, traditional flat roofing material.
- PVC Roofing. A flexible, energy-efficient membrane that resists chemicals and grease, a good fit for roofs near restaurant exhaust or rooftop equipment.
- BUR (Built-Up Roofing). The traditional tar-and-gravel system, still found on many older Mississauga homes and additions. Repairs involve restoring the felt layers and asphalt coating to keep it watertight.
We’ll recommend the right system for your roof based on its size, slope, drainage, and budget, not just push whatever’s easiest for us to install.
Common Causes of Flat Roof Leaks
Most flat roof leaks in Mississauga trace back to one of these causes:
- Aging or worn membrane that’s simply reached the end of its lifespan
- Poor original installation, including bad seams or improperly sealed edges
- Poor drainage or ponding water sitting on the roof longer than it should
- Damaged flashing around vents, chimneys, and roof edges
- Freeze-thaw cycling, which stresses seams and membrane over Mississauga’s winters
- Punctures or debris damage from branches, foot traffic, or rooftop equipment
Knowing the cause matters because it changes the fix. A membrane that’s simply old needs different treatment than a roof with a drainage design problem.
How We Locate a Flat Roof Leak
Flat roof leaks are notoriously tricky to trace because water can travel sideways under the membrane before it shows up as a stain inside. Our process:
- Start from the interior stain and measure its distance to the two nearest walls
- Go up to the roof and use those measurements to narrow down the search area
- Clear debris so damage isn’t hidden under leaves or dirt
- Check the slope direction and inspect uphill, since water runs downhill under the membrane
- Look for punctures, blisters, seam separations, and worn spots in the membrane itself
- Check flashing and vent boots if the membrane itself looks intact
- Flood-test after the repair to confirm the fix actually holds before we call the job done
This is why DIY leak-chasing often fails; the entry point is rarely where the stain shows up inside.
Signs Your Flat Roof Needs Repair or Replacement
Flat roofs give warning signs before they fail. Watch for:
- Ponding water that doesn’t drain within 48 hours after rain
- Bubbling, blistering, or cracking in the membrane surface
- Seams pulling apart or visible gaps at edges and flashing
- Interior water stains on ceilings below the flat roof section
- Roof age over 15 to 20 years without a recover or replacement
If you’re seeing any of these, a free inspection can tell you whether a targeted repair will do the job or if it’s time to plan for full replacement.
Flat Roofing in Mississauga’s Climate
Flat roofs face different stress than sloped roofs, and Mississauga’s weather adds a few specific challenges:
- Snow load and drainage. Flat roofs need proper slope and working drains to prevent standing water and snow buildup in winter. Poor drainage is the single biggest cause of flat roof failure we see in the area.
- Freeze-thaw cycling. Repeated freezing and thawing stresses membrane seams and flashing over time, especially on older built-up roofs. Regular inspection catches this before it becomes a leak.
- UV exposure in summer. Flat roofs take direct sun exposure all day with no slope to help shed heat, which accelerates membrane aging. Material choice and proper installation both affect how well a roof holds up long-term.
We serve flat roofing projects throughout Mississauga, including Port Credit, Clarkson, Erin Mills, Meadowvale, Streetsville, Cooksville, and the City Centre area.
What Affects the Cost of Flat Roof Replacement
- Roof size: flat roofs are typically priced by square footage
Material choice: TPO, EPDM, and modified bitumen vary in material and labour cost - Current condition: whether the existing roof needs a full tear-off or can be recovered
- Drainage upgrades: adding or improving drains can add to scope but prevents future ponding issues
- Insulation: some replacements are a good opportunity to upgrade roof insulation at the same time
- Access and roof complexity: rooftop equipment, vents, and skylights all add labour time
While every project is different, homeowners in Mississauga can generally expect to invest between $8,000 and $20,000+ for a flat roof replacement. Factors such as roof size, material choice, insulation, and the condition of the existing roof all influence the final cost. Our team will inspect your roof and provide a transparent, detailed quote with no hidden fees.
FAQs
How long does a flat roof last?
Depending on the material, a well-installed flat roof typically lasts 15 to 25 years. TPO and EPDM systems tend to last longer than older built-up roofing when properly maintained.
What are the most common causes of flat roof leaks in Mississauga?
Aging membranes, poor original installation, poor drainage, ponding water, and damaged flashing are the most common causes. Freeze-thaw cycling and heavy snow load add extra stress in Ontario winters.
Why does my flat roof have standing water?
Some minor ponding after rain is normal, but water that doesn’t drain within 48 hours usually points to a drainage or slope issue that should be inspected before it causes membrane damage.
Can a flat roof be repaired instead of replaced?
Often, yes. If the damage is localized, like a seam separation or a small puncture, a targeted repair can extend the roof’s life without a full replacement. We’ll always recommend repair first when it’s a safe, lasting option.
How long does a flat roof repair last?
A properly done repair can last 5 to 10 years or more, depending on the material and how the repair was performed. Matching the repair method to the roofing material makes a big difference in how long it holds.
Does insurance cover flat roof repairs?
Sometimes, if the damage is from a covered event like wind, hail, or fire. Wear and tear generally isn’t covered. See our insurance section above for more detail.
How much does flat roof repair cost in Mississauga?
Costs typically start around $500 for smaller repairs and can range higher depending on size, material, and severity of the damage. We provide free, no-obligation quotes so you know the cost before any work begins.
How often should I have my flat roof inspected?
Twice a year is a good baseline, ideally in spring and fall, plus a check after any major storm or heavy snowfall.
Our Recent Work
Our collection of high-quality images featuring our completed projects, highlighting various roof sections and roofing systems. Our portfolio showcases the excellence and standards we maintain in our work.
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Fully Licensed and Insured
We are also a proud member of the Bryan Baeumler Approved Contractors program. This program allows homeowners to search for reputable contractors in their area.
