Flat and commercial
Commercial Roofing in Calgary
Marku Roofing Repair Ltd. repairs and maintains low-slope commercial roofs in Calgary. We work on SBS modified bitumen, EPDM, TPO and PVC. We carry a WCB Alberta account, $5,000,000 in commercial general liability, and a City of Calgary contractor licence, which is the documentation most property managers ask for before a contractor gets on the roof.
- 24/7 emergency line
- Licence BL272564
- WCB 9892020
- $5M liability
- Free written estimate
Free written estimate
Tell us what the roof is doing
We reply with a written scope and a price, not a range.
City of Calgary licence
BL272564
WCB Alberta account
9892020
General liability
$5,000,000
Written estimate
Free, itemised
Call 403-700-7542 for a free written estimate.
01
What building owners are actually buying
A commercial roof repair is a risk transfer. The owner is not buying membrane, they are buying the removal of a business interruption. That changes what matters.
Documentation before work. A written scope with photographs, so the decision can be defended to a landlord, a board, or an insurer.
Certificates on file. WCB clearance and a certificate of insurance naming the building owner. Without both, most property managers cannot issue the work order.
Scheduling around occupancy. Tenants, deliveries, and rooftop mechanical service all have to keep running.
02
Systems
SBS modified bitumen. Two-ply, torch-applied or self-adhered. Handles rooftop traffic better than single-ply and repairs cleanly. See SBS roofing.
EPDM. Single-ply synthetic rubber. Seams are taped or adhered. Repairs are patch-and-prime.
TPO and PVC. Single-ply thermoplastics, hot-air welded. Welded repairs restore the original seam strength. PVC additionally resists grease, which matters on restaurant roofs with kitchen exhaust.
Not tar and gravel. Our insured scope of operations is roofing and repair excluding hot tar. We do not run kettles or rebuild traditional built-up systems.
Stop guessing
Get commercial roofing priced in writing
We look at the roof, photograph what we find, and hand you a scope with a number on it. If a repair is the right answer, we say so rather than quoting a replacement.
Estimates are free and written. Not a range, not a verbal number.
03
Where commercial roofs leak
Almost never in the middle of the field.
Curbs and mechanical units. Rooftop HVAC curbs are the single most common leak source on a Calgary commercial roof. Base flashing pulls away, counter flashing is missing, or a service technician has cut the membrane to run new conduit and sealed it with silicone.
Parapets. Coping joints open with thermal movement. Water enters the top of the wall, not the roof, and shows up two metres inside.
Drains and scuppers. Compressed clamping rings, blocked strainers, and drains that sit above the low point.
Penetrations. Conduit, gas lines, exhaust fans, and anything installed after the roof went on.
Transitions. Between roof sections of different heights, ages, or systems.
04
Maintenance beats replacement
A commercial roof that gets inspected twice a year and has its drains cleared costs a fraction of one that gets attention only when a tenant reports a ceiling stain. The economics are not close. By the time water reaches a tenant, the insulation below the membrane is already wet and the repair has become a section replacement.
Draft The standard commercial arrangement is two scheduled inspections a year, spring and fall, with drains and scuppers cleared, laps and flashings checked, and a written report with photographs after each visit. Minor defects get repaired on the spot; anything larger gets quoted before work starts. In Calgary that typically runs $400 to $1,200 per visit for a small to mid-size building, scaled by roof area and the number of penetrations.
The fall visit matters most here. Anything left open going into a Calgary winter has five months of freeze-thaw to work on it before anybody is back on the roof.
05
Property types
Pending client inputwhich commercial buildings you have actually worked on in Calgary. Deliberately not drafted: naming building types you have not roofed is the one thing on this page that would be a straight fabrication, and it is also the thing a property manager checks. Named building types plus photographs from real jobs are what carry this page. Generic commercial copy neither ranks nor converts.
Our own photographs
Work on Calgary roofs
Every photograph on this site is taken on a job we did. No stock libraries.
Checkable, not claimed
Credentials you can verify before we set a ladder up
| Legal entity | Marku Roofing Repair Ltd. |
| Incorporated in Alberta | 2022 |
| Alberta corporate access number | 2024249985 |
| City of Calgary business licence | BL272564 |
| WCB Alberta account | 9892020 |
| Commercial general liability | $5,000,000, Sandbox Mutual Insurance, occurrence-based |
| Insured operations | Roofing and repair, excluding hot tar |
Certificates of insurance naming the building owner as additional insured are available on request through our broker.
No awards, no rankings, no "best in Calgary". A licence number, a WCB account and a policy limit are things you can check yourself.
More about the companyAnswers
Frequently asked questions
Still unclear? A five minute phone call usually settles it faster than reading.
Ask us directlyCan you provide a WCB clearance letter?
Yes. Our WCB Alberta account is 9892020. Draft A current clearance letter is available on request, and we will send it before work starts rather than after you ask twice. You can also verify the account yourself directly with WCB Alberta, which is the point of publishing the number.
Can you name our company as additional insured?
Yes. Our commercial general liability policy is written on an occurrence basis through Sandbox Mutual Insurance and brokered by BrokerLink.
Do you work outside business hours?
Draft Yes. The emergency line runs 24/7, and scheduled work outside business hours is normal for occupied buildings where daytime work is not practical. Retail and restaurant work is often better done early morning or on a weekend, and tear-off noise over an occupied office is worth scheduling around. Out-of-hours work carries a premium, typically 15 to 30 percent, and it is stated in the estimate rather than added afterwards.
Can you provide a roof condition report for budgeting?
Yes. See roof inspection in Calgary.
Free written estimate
Book it before the next chinook
Freeze-thaw turns a small opening into a large one faster here than almost anywhere else in Canada. Get it looked at while it is still a repair.
Serving Calgary, Airdrie, Cochrane, Okotoks and Chestermere.