Repair or Replace? A Practical Guide for Commercial Roofing Maintenance

As a commercial property owner or manager in Edmonton, one of your most important duties is maintaining your building’s roof. In addition to protecting your assets and your tenants, a well-maintained roof also helps save energy. But as your roof ages, the dilemma of whether to replace it completely or repair it often comes up.

This guide will provide you with practical considerations to help you make the right decision for your commercial roofing, focusing on building performance, safety, longevity and cost.

1.    Know Your Roof’s Age and Type

A business roof’s typical lifespan varies depending on the material. Here’s a quick breakdown:

• Built-up Roofing (BUR): 20 to 30 years

• EDPM (Rubber): 20 to 25 years

• TPO or PVC Membranes: 15 to 30 years

• Metal Roofing: 45+ years

• Spray Foam Roofing: 20 to 30 years

Replacement may be the best choice in the long run if your roof is nearing the end of its anticipated life and showing signs of consistent problems. However, for newer roofs, repairs and regular maintenance can commonly restore full functionality, especially if issues are isolated.

2.    Assess the Damage and Severity

One important factor to consider when deciding whether to repair or replace is how severe the damage is. Repairing localized damage (like punctures, lifted seams, or ponding in one area) is typically sufficient. On the other hand, widespread deterioration (such as cracks across the membrane, persistent leaks in multiple areas, sagging, etc.) often suggests a replacement is needed.

Get a specialist to do a thorough inspection to find out what’s underneath, including infrared scanning if moisture intrusion is suspected.

3.    Compare the Long-Term Value vs. Repair Costs

In the short term, it may be tempting to go with the less expensive solutions, but repairs can add up fast.

Imagine spending $5,000 on repairs for a failing roof multiple times a year. That money could have been used for a brand-new roof with a warranty that would have improved performance and emergency efficiency. You would be better off replacing a roof if the cost of repairs exceeds 25% of the cost of replacement.

Use a Roof Lifecycle Cost Analysis to help in comparing upfront costs with warranty benefits, lifespan, and energy savings. Consult with a commercial roofing specialist to determine which approach you should take.

4.    Consider the Impact on Business Operations

For many commercial buildings, time is money. The impact of leaks on internal systems, retail activity, or tenants may be more expensive than a replacement.

When to prioritize replacement:

• Interior damage is continuous (mold, ceiling stains, and inventory damage)

• Downtime is needed for other renovations

• Tenants are experiencing operational issues

• You need to meet new building codes or insurance requirements

Additionally, a new roof can increase property value and signify modernization, both of which appeal to prospective buyers and investors.

5.    Think About Energy Efficiency and Building Performance

Older roofs can negatively impact the energy performance of your building, particularly if they lack modern insulation or reflective membrane.

A full replacement allows you to:

• Upgrade insulation to meet or exceed new regulations

• Install UV-reflecting cool roof materials to lower HVAC demand

• Integrate solar panels or green roofing systems

The results? Reduced carbon emissions, lower utility costs, and more often, the possibility of receiving tax incentives or rebates.

6.    Check Your History of Warranty and Maintenance

Before making a final decision, check:

• Does the warranty still apply to the current roof?

• Have repairs been extensive or regular in the past?

• Was the roof neglected or maintained on a regular basis?

Your roof can be covered for some repairs if it’s still under warranty. Annual inspections are crucial for another reason: warranties often ask for documented routine maintenance.

Final Thoughts

Every building, including roofs, is different. If you’re unsure, consulting with a reputable commercial roofing company like MTM Roofing Services can provide the clarity you need. We have the professionals on hand to examine your commercial roof, offer honest assessments, and assist you with cost-effective solutions tailored to your needs.