Commercial properties represent major investments, and the roof is one of their most critical components. A compromised roof can disrupt operations, damage interiors, increase energy bills, and even void insurance. At Home Vision Contracting, we specialize in diagnosing and resolving the most common—and complex—roofing issues in commercial buildings and how to fix them.
Whether you manage a retail plaza, office space, warehouse, or condo complex, understanding the warning signs and solutions is essential for protecting your property year-round.
1. Ponding Water on Flat Roofs
The Problem:
Flat or low-slope roofs are common in commercial buildings but are prone to water pooling. This typically occurs due to poor drainage, aging membranes, or insufficient slope. Water that sits for more than 48 hours is considered “ponding” and can lead to structural stress or membrane breakdown.
How to Fix It:
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Regrade or reslope the roof to improve water flow
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Clear and maintain internal drains, scuppers, and gutters
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Install tapered insulation during re-roofing projects
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Use high-performance membranes with standing water resistance
At Home Vision Contracting, we use infrared imaging to detect underlying water damage and recommend the right drainage upgrades.
2. Membrane Cracking and Blistering
The Problem:
Commercial roofs with membrane systems like TPO, EPDM, or BUR often face blistering, cracking, or bubbling due to UV exposure, temperature fluctuations, or trapped moisture. These issues weaken waterproofing layers and allow leaks to form.
How to Fix It:
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Conduct routine inspections to identify early-stage damage
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Patch or recoat affected areas with compatible materials
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Apply reflective coatings to reduce UV degradation
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Replace membranes nearing the end of their service life
A well-maintained membrane system can last 20–30 years with proper care. Our team ensures seamless patching and adherence to manufacturer standards.
3. Roof Leaks and Hidden Moisture
The Problem:
Leaks can occur around HVAC units, flashing, seams, or skylights. In many commercial buildings, these leaks go unnoticed until they’ve already damaged insulation, ceilings, or inventory.
How to Fix It:
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Schedule biannual roof inspections to detect vulnerable areas
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Use sealants and flashing repairs where needed
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Replace failing caulking and gaskets
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Utilize moisture detection tools during inspections
Home Vision Contracting offers proactive leak detection and emergency repairs, minimizing downtime and protecting your assets.
4. HVAC-Related Roof Damage
The Problem:
HVAC systems and rooftop units (RTUs) are heavy and require regular servicing, which can stress roof membranes or flashing. Poor installation or maintenance can create cracks or holes in the system.
How to Fix It:
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Install protective curbs and walk pads around RTUs
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Ensure flashing is reinforced around penetrations
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Require HVAC contractors to use non-invasive service methods
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Inspect roof surfaces after any HVAC work
We collaborate with HVAC professionals to ensure rooftop systems are both efficient and non-damaging.
5. Poor Installation or Outdated Materials
The Problem:
Many commercial roofing issues stem from shortcuts taken during installation or the use of outdated materials. Improper fastener placement, inadequate ventilation, or incompatible materials can lead to premature failure.
How to Fix It:
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Conduct a full inspection before replacing any roof
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Choose certified contractors experienced with commercial codes
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Upgrade to modern, energy-efficient, weather-resistant roofing systems
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Review warranties and workmanship guarantees before signing contracts
At Home Vision Contracting, we follow industry-leading practices and use top-grade commercial roofing products approved for Ontario weather conditions.
6. Snow and Ice Buildup in Winter
The Problem:
Ontario winters bring heavy snow loads and ice damming, especially on flat roofs. Accumulated snow adds weight and can cause leaks or collapse if left unmanaged.
How to Fix It:
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Remove snow with roof-friendly tools and safety harnesses
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Install heating cables or insulation to reduce freeze points
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Ensure all drains are ice-free before storms
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Schedule seasonal snow clearing as part of maintenance
Our winter maintenance services help keep your commercial roof safe and code-compliant during severe weather.
7. Vegetation and Debris Accumulation
The Problem:
Leaves, branches, and moss trap moisture and block drains. Over time, this debris breaks down membranes and fosters algae growth, reducing reflectivity and increasing maintenance costs.
How to Fix It:
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Clean drains and roof surfaces quarterly or after storms
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Install leaf guards or drain screens
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Use anti-moss treatments or coatings where needed
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Trim nearby trees to prevent debris buildup
Home Vision Contracting includes debris cleaning as part of our preventive maintenance plans to ensure system longevity.
The Importance of Routine Commercial Roof Maintenance
Preventive maintenance is the best way to avoid costly emergency repairs. According to industry data, well-maintained commercial roofs can last 30% longer than neglected ones. Home Vision Contracting offers tailored service packages that include:
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Biannual inspections with photo documentation
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Drain cleaning and minor repairs
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Leak testing and moisture scanning
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Detailed reports for insurance and asset management
When to Repair vs. Replace a Commercial Roof
Knowing whether to repair or replace depends on:
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Age of the roof
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Severity of the damage
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Type of materials used
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Frequency of leaks or repairs
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Energy efficiency and insulation quality
We help you assess the condition of your commercial roof and guide you to the most cost-effective, long-term solution. If full replacement is necessary, we handle permitting, system design, and phased installation to avoid business disruption.
Protect Your Property with Smart Roofing Decisions
Dealing with roofing issues in commercial buildings and how to fix them doesn’t need to be overwhelming. With the right partner, you can protect your property, budget, and operations.
At Home Vision Contracting, we bring over a decade of experience in Ontario’s commercial roofing landscape. From flat roof leaks to code-compliant replacements, we do it all—safely, professionally, and with a focus on long-term results.
📞 Contact us today for a commercial roof assessment in Toronto, Mississauga, Vaughan, or the GTA.
🛠️ Request a free quote and keep your building watertight, year-round.
