01
Active Roof Leaks
Water entering your building can damage ceilings, equipment, inventory and tenant spaces. We locate the source and recommend the right repair.
15+
Years in Calgary
158
Verified Google reviews
4.8
Google rating
3,000+
Projects completed
Problems we solve
Commercial Roof Problems We Solve
Flat roof issues become expensive when they reach tenant spaces, inventory, equipment or daily operations.
02
Ponding Water
Standing water can accelerate membrane failure, damage insulation and create recurring leak points.
03
Aging Flat Roofs
If your membrane is cracking, blistering, shrinking or separating at seams, we can assess whether repair, overlay or replacement makes sense.
04
Hail, Wind & Storm Damage
Calgary weather is hard on commercial roofs. We document damage clearly and can support insurance-related roof assessments.
05
Drainage, Flashing & Rooftop Units
Many flat roof leaks start around drains, scuppers, penetrations, flashing, HVAC units and edge details.
06
Business Disruption Risk
We plan commercial work carefully so your building can stay operational whenever possible.
Inspection deliverables
What Is Included in a Commercial Roof Inspection
A proper commercial roof inspection should give you answers, not pressure. Our team checks the roof, drainage, flashing, penetrations and visible interior signs of water entry, then gives you clear recommendations.
- ✓Interior leak check when needed
- ✓Thermal camera and moisture meter assessment when appropriate
- ✓Building envelope review
- ✓Drainage, ponding and slope review
- ✓Flashing, scuppers, rooftop units and penetrations
- ✓Membrane condition and remaining life estimate
- ✓Photo report with findings
- ✓Repair vs replacement recommendation
- ✓Clear proposal for the next step
Services
Commercial Flat Roofing Services
Whether it is an active leak or you want to assess the condition before it becomes a problem, these are the services we handle.
01
Commercial Flat Roof Repair
For leaks, punctures, open seams, flashing failures, pooling water and localized membrane damage.
02
Commercial Roof Replacement
For aging or failing roof systems where repair no longer protects the building long-term.
03
Flat Roof Installation
New roof systems for commercial, industrial, retail, office and multi-family buildings.
04
Torch-On / SBS Roofing
Durable flat roofing systems suited for Calgary freeze-thaw cycles and demanding weather.
05
Preventive Maintenance
Seasonal inspections, drain cleaning, small repairs and reporting to help prevent emergency leaks.
06
Commercial Roof Inspection Reports
Photo-documented findings for owners, property managers, insurance, planning and budgeting.
Honest assessment
Repair First. Replace When It Makes Sense.
A full flat roof replacement can be expensive, and it is not always necessary. City Roofing & Exteriors assesses the roof condition first and explains whether a targeted repair, maintenance plan, overlay or replacement is the right move.
Get an Honest Roof AssessmentRepair may be right if:
- ✓The leak is isolated
- ✓The membrane is mostly sound
- ✓Drainage issues are minor
- ✓Damage is around flashing or penetrations
- ✓The roof still has useful life
Replacement may be right if:
- ✓Leaks keep returning
- ✓Insulation is wet
- ✓Membrane is brittle, cracked or shrinking
- ✓Ponding is widespread
- ✓Repairs are becoming frequent
- ✓The roof is near end of life
01
One accountable crew
In-house crews, no subcontractor handoff, and a Calgary office and warehouse you can reach after the job.
02
Commercial-ready documentation
Photo findings, roof condition notes, repair recommendations and closeout details for owners and property managers.
03
Proper coverage and safety
SECOR Certified, WCB Alberta coverage and BBB Accredited for commercial sites that require proof before work begins.
04
Built for Calgary weather
Flat roof recommendations account for hail, snow load, drainage, freeze-thaw cycles and rooftop equipment.
Industries served
Different buildings. Different roof risks.
Different buildings have different stakes when a flat roof fails. We plan work around what matters most in each one.
Inventory
Stop leaks before they reach stock, equipment or production areas.
Tenants
Plan work around access, tenants, customers, staff and operating hours.
Records
Give managers photos, findings and recommendations they can keep on file.
Inventory & operations
Warehouses, industrial buildings and logistics spaces
The priority is stopping water before it reaches inventory, equipment, racking or production areas. We focus on leak source, drainage, membrane condition and rooftop penetrations.
WarehousesIndustrial baysLogistics properties
Tenants & public access
Retail plazas, offices, restaurants and community buildings
These roofs need practical scheduling and clean documentation because customers, staff and tenants are still using the building while roof work is planned.
Retail plazasOffice buildingsRestaurantsSchools and churches
Managed assets
Multi-family, condo boards and property portfolios
Property managers need clear photos, written recommendations, repair history and budget guidance for boards, owners, tenants and insurance conversations.
Condo buildingsMulti-family propertiesProperty management portfoliosNew commercial developments
Project proof
Commercial Flat Roof Work in Calgary
Reviews
Commercial and Flat Roof Customers
★★★★★
“A friend recommended City Roofing to fix some bad leaks on my flat roof. Ken and Codi came out, explained the problem areas, texted pictures and gave the cost to fix. We had lots of rain since then - no leaks.”
Chris L.
★★★★★
“Got quotes from three companies. City Roofing was not the cheapest, but they gave us the clearest explanation of the work and materials. No issues after the job was done.”
M. Patel
★★★★★
“They helped document the roof damage after the July hailstorm and gave us clear photos and notes for the insurance process. The new roof looks great.”
S. Thompson
★★★★★
“We manage a small strip mall in SE Calgary and have used City Roofing for flat roof maintenance for two years. Reliable, fairly priced, and they document everything properly for our building records.”
B. MacDonald
Process
How Our Commercial Roofing Process Works
1
Call or Request Inspection
We gather basic property details, roof issue, urgency and access requirements.
2
Roof & Building Assessment
We inspect the roof, drainage, flashing, penetrations and visible interior signs of leaks.
3
Photo Report & Recommendation
You receive clear findings, photos and a practical repair, maintenance or replacement recommendation.
4
Clear Proposal
We explain scope, timeline, materials and pricing without pressure.
5
Professional Work
Our in-house crew completes the work with careful scheduling, cleanup and quality control.
6
Final Inspection
A site manager reviews the work and confirms the roof is completed properly.
Commercial Flat Roofing FAQ
Do you repair commercial flat roof leaks in Calgary?
Yes. We inspect the roof to find the source of the leak and recommend the right repair. Common leak points include drains, scuppers, seams, flashing, rooftop units and membrane punctures.
Do I need a full commercial roof replacement?
Not always. Many flat roofs can be repaired or maintained if the membrane and insulation are still in workable condition. We assess the roof first and explain the most practical option.
What causes ponding water on a flat roof?
Ponding can come from poor slope, blocked drains, settled insulation, damaged membrane areas or drainage design issues. It should be checked because standing water can shorten roof life.
Can you inspect the roof and provide photos?
Yes. Our commercial inspections can include photo documentation, findings and recommendations so owners and property managers have a clear record.
Do you work on commercial buildings while they remain open?
In many cases, yes. We plan access, staging, cleanup and timing to reduce disruption to tenants, staff and customers.
What types of flat roofs do you work on?
City Roofing & Exteriors works on commercial flat roof repairs, replacements, installations, torch-on/SBS systems, inspections and maintenance.
Do you help with storm or hail damage?
Yes. We can inspect damage, document findings and provide a proposal for repair or replacement.
Need a Commercial Flat Roof Checked?
Whether you have an active leak, ponding water, storm damage or an aging flat roof, City Roofing & Exteriors can inspect the roof and give you a clear next step.