Commercial Roofing Tips – What You Must Know

Investing in a new commercial roof is more than safeguarding property, it protects employees, tenants, equipment, and your bottom line. At Grandmark Roofing, we focus on delivering premium commercial roofing solutions from single-ply membranes to built-up systems backed by certified workmanship and transparent service. Whether rain, roof age, or heavy rooftop traffic is an issue, our team handles the right system for your commercial building’s needs.

Key Takeaways

• Understand the types and lifespans of common commercial roofing materials.
• Recognize issues from improper installation, ponding water, and UV damage.
• Learn how Grandmark delivers trusted planning, installation, and maintenance.
• See real client results in durability, energy savings, and peace of mind.
• Get tips to extend roof life and avoid costly emergencies.

Types of Commercial Roofing Systems & Lifespan

Commercial roofs typically fall into flat or low-slope categories, with several material options:

• Built-Up Roofing (BUR): Multi-layer asphalt and fabric with gravel cap. Durable and reliable, lasting up to 30 years when well maintained. [2]
• Modified Bitumen (MB): Enhanced flexibility and UV resistance versus BUR; lifespan around 20–30 years. [2]
• EPDM (Rubber Roofing): Affordable, tear-resistant synthetic membrane with a 20–30 year lifespan. [4]
• PVC and TPO (Single-Ply Membranes): Heat-welded seams offer water, chemical, and fire resistance; ideal for rooftop equipment. Lifespans vary from 20–30 years, depending on membrane and maintenance. [4]
• Metal Roofing (Steep or Low Slope): Standing-seam systems can last 40–70 years, reflecting heat for energy savings. Excellent in harsh weather. 
  

Choosing the right system depends on your building’s slope, climate, rooftop use, and long-term goals.

Common Commercial Roofing Challenges & Solutions

Leaks and Seam Failures

Leaks often arise from poor seam welding, flashing issues, or degraded underlayment. Grandmark delivers expert seam welding and flashing installation to prevent these and supports it with warranty coverage. 

Ponding Water

Flat roofs are vulnerable to standing water. This stresses membranes and leads to premature failure if not properly drained. We design professional drainage systems using tapered insulation, improved scuppers, and roof drains to eliminate ponding. 

Installation Mistakes

Weak welds, gaps, or improper installation shorten roof life. We use licensed crews, premium materials, and adhere strictly to manufacturer standards to deliver a dependable roof from day one.

UV Damage & Membrane Shrinkage

Exposure to UV light can fade and shrink certain membranes over time. Materials like TPO and PVC mitigate shrinkage and extend lifespan especially when installed professionally.

Foot Traffic Impact

Commercial roofs frequently host HVAC units or personnel access, causing membrane wear. We reinforce high-traffic zones and provide safe walkways to prevent puncture and erosion issues. [11]

Pro Tips to Extend Your Commercial Roof’s Life

1. Inspect biannually especially after storms to spot minor repairs early. [9]
   
2. Keep rooftop drains and gutters clear to avoid ponding. [9]
   
3. Reinforce walkable pathways and high-traffic zones to avoid membrane wear.
   
4. Use reflective coatings on white or TPO roofs to boost energy savings and UV resistance.
5. Repair seams and flashing promptly to prevent small issues from becoming costly leaks.