Reliable Flat Roof Replacement for Commercial Buildings
When a roof reaches the end of its service life or develops chronic leaks, a flat roof replacement is the most effective way to restore protection and performance. CMP Roofing specializes in complete and partial roof replacements across Calgary for TPO, SBS, EPDM, and BUR systems.
We combine manufacturer-certified installation methods with detailed assessments and moisture testing to ensure your new system performs better than the original — with minimal disruption to your daily operations.
When to Replace a Flat Roof
Flat roof replacement is recommended when:
- Repairs are no longer cost-effective or recurring leaks persist.
- The roof membrane shows cracks, blistering, or alligatoring.
- Insulation is wet or deteriorated from long-term moisture exposure.
- Drainage or slope issues are causing ponding and structural stress.
- You’re upgrading for improved energy efficiency or solar readiness.
Before replacement, CMP Roofing performs detailed inspections and, if needed, non-destructive moisture scans to verify the condition of the deck and insulation.
Our Roof Replacement Methods
Every flat roof is unique. CMP Roofing tailors replacement methods based on building type, existing structure, and long-term goals:
1. Full Tear-Off Replacement
A complete removal of old roofing layers down to the deck, ensuring the new system performs like new construction. Ideal for roofs with trapped moisture or structural deterioration.
2. Roof Overlay / Recover
A cost-effective solution where the existing roof is left in place, and a new membrane system is installed above. This reduces waste and minimizes downtime.
3. Targeted Sectional Replacement
For large facilities, we can replace roof sections in phases — allowing your operations to continue uninterrupted while upgrading over time.
👉 See our New Flat Roofs service for complete system installations.
Roofing Systems We Replace
- TPO: High-efficiency, heat-welded membranes ideal for reflective, energy-saving roofs.
- SBS-Modified Bitumen: Multi-ply asphalt-based systems offering excellent flexibility in Calgary’s cold climate.
- EPDM Rubber: Proven long-life membrane for warehouses and industrial facilities.
- BUR (Built-Up Roofing): Traditional asphalt and felt systems replaced or upgraded with modern alternatives.
CMP Roofing’s expert crews ensure compatibility between the new and existing assemblies, addressing slope corrections, insulation improvements, and new flashing details where required.
Minimize Downtime, Maximize Value
Our commercial clients choose CMP Roofing because we plan every project around your schedule. From staging and debris control to safe tear-off procedures, we keep sites clean and operational.
We use premium materials sourced from top manufacturers, with warranties that cover both labor and product performance for years to come.
Extend the Life of Your New Roof
After replacement, our Maintenance & Asset Plans provide routine inspections, drain cleaning, and preventative maintenance — protecting your investment for the long term.
For urgent issues before replacement, our Emergency Leak Repair (24/7) service can stabilize the roof and prevent damage until permanent work is completed.
Upgrade to Solar-Ready Roofing
Many clients combine roof replacement with a Solar-Ready Roofing design, ensuring structural compatibility for future solar installations. CMP Roofing can coordinate with solar providers to prepare your roof for load and attachment points without compromising warranty coverage.
Get a Free Roof Assessment
Not sure if your building needs a full replacement or just repairs? Schedule a Free Roof Assessment. Our team will inspect your roof, perform moisture checks, and provide transparent recommendations and pricing options.
Why Choose CMP Roofing
- Certified commercial re-roofing experts
- Local Calgary team with experience across all membrane systems
- Full tear-off, overlay, and slope correction capabilities
- Detailed reporting and photo documentation
- Strong safety culture and warranty-backed workmanship
Book Your Flat Roof Replacement
CMP Roofing delivers dependable flat roof replacements that restore waterproofing, extend roof life, and improve your property’s energy performance.