Protecting Your SPF Polyurethane Flat or Low-Slope Roof
A properly installed spray polyurethane foam (SPF) roofing system is one of the most effective long-term solutions for flat and low-slope roofs. Its seamless, waterproof nature provides exceptional insulation and leak protection—making it a valuable investment for commercial, industrial, government, and institutional buildings such as offices, schools, malls, and warehouses. But like any asset, your SPF roof will only deliver returns if it’s maintained and protected from the unique threats that come with rooftop activity, weather, and time.
Why Protection Matters
SPF roofing systems are highly durable and energy-efficient, but they are still vulnerable to mechanical damage and UV degradation. Protecting the membrane helps extend its lifespan, maintain its reflective properties, and prevent costly interior water damage that disrupts operations.
Foot Traffic and Rooftop Activity
Designated Walk Paths and Reinforced Zones
While SPF roofing is resilient, regular foot traffic can cause compression or punctures—especially in areas leading to HVAC units, vents, and other equipment. During the initial installation or during scheduled recoating, it’s vital to designate reinforced walk paths. These can be created with additional layers of SPF and protective topcoats or walk pads to ensure safe access for maintenance staff while preserving membrane integrity.
Controlling Access
Unnecessary traffic increases the risk of membrane damage. Roof access should be restricted to trained personnel only, with lockable access points and clear signage. Ensuring that only qualified individuals step onto the roof helps minimize wear, accidental damage, and safety incidents. The rooftop is not the place for the building’s employees, residents, or visitors to have coffee/smoke breaks.
Protection During Work
Every building will require regular maintenance, and that often means accessing the roof. Often, most of the HVAC equipment is installed on the rooftop. Maintenance or trade workers often bring sharp tools, heavy equipment, sheet metal, and fasteners. These items can puncture or gouge the SPF surface—especially if dropped or left behind. To prevent this, protective work blankets or temporary pads should always be used under work areas.
Tip: Always inspect the roof after contractor visits. A single dropped screw stepped on can cause a leak weeks later.
Hazards from Loose Materials and Wind
Cables, chains, or ropes that drape over the edge of the roof can swing or shift in the wind, scouring the SPF surface. Over time, this can remove protective coatings or dig grooves into the foam. Ensure such materials are secured properly and kept off the membrane whenever possible.
Scheduled Roof Inspections
Routine inspections (at least twice per year, plus after major storms or rooftop work) are essential. Key things to look for:
- Low spots where water can pond
- Cracks or blisters that may signal membrane failure
- UV degradation, particularly on older roofs
- Weak spots around vents, drains, and pipes where expansion/contraction may stress the seal
- Blocked drains that can accelerate deterioration
Addressing minor wear early helps prevent major leaks or system failure. SPF systems are easily repairable—but only if issues are caught in time.
Cleaning and Reflectivity
SPF roofs are prized for their white or reflective coatings that reduce solar heat gain. But a dirty roof loses its reflectivity, increasing cooling costs in summer.
- Clean the roof using a moderate-pressure washer—strong enough to remove grime but gentle enough not to damage the membrane.
- Remove leaves, organic debris, and bird droppings regularly.
- Avoid using harsh chemicals or abrasive brushes.
As SPF roofs age, even a clean surface will slowly lose reflectivity. Recoating every 10–15 years, depending on climate and use, restores UV protection and extends the roof’s life.
Drainage, Snow Loads, and Ice Dams
Flat and low-slope roofs must be designed and maintained to handle:
- Snow accumulation (which can add thousands of kilograms of weight)
- Melt/freeze cycles that can force water into cracks
- Blocked drainage that can lead to pooling and structural risk
Ensure that internal drains, scuppers, and downspouts are unobstructed and properly graded. Poor drainage can undermine the SPF system and damage the roof deck underneath.
Wildlife: Birds and Pests
Birds, particularly pigeons, can wreak havoc on a roof membrane. Their droppings are acidic and can degrade coatings. Nesting materials can block drains. In some cases, birds may peck at exposed areas. Install bird deterrents or netting and inspect regularly for signs of wildlife activity.
Use a Qualified SPF Roofing Contractor
SPF roofing is not a DIY or one-size-fits-all system. The success of an SPF installation depends on proper design, preparation, and spraying by experienced professionals. Every building—whether a school, warehouse, or office complex—has unique drainage patterns, roof penetrations, and usage considerations.
Working with a certified and experienced SPF contractor ensures:
- Proper sloping for drainage
- Sufficient thickness and insulation R-value
- Durability under climate stress and UV exposure
- Adherence to building codes and fire ratings
- Lower lifetime maintenance and repair costs
An SPF roof is more than just a protective layer—it’s a long-term investment in energy efficiency, leak prevention, and operational continuity. With proper installation, thoughtful planning, and ongoing maintenance, you can expect decades of reliable performance. Protect your roof, and it will protect your building.
✅ Want to dive deeper into SPF Polyurethane Roofing? Check out our full article.
✅ Need a full breakdown of scheduling roof inspections and preventive care? Click through to read more.
Trust Experience: ProFoam Insulators
ProFoam Insulators in Swift Current has been installing high-performance SPF polyurethane roofing systems throughout Saskatchewan, and in Alberta, and Manitoba since 2012. With more than a decade of experience, we understand the needs of commercial and industrial buildings across Saskatchewan. We don’t just install SPF roofing—we trust it on the roofs of our own buildings.
In Swift Current:
Telephone: 306-773-3606
Cellular: 306-537-9529
The information on this page and this website is for informational purposes only, and is not a substitute for Federal, Provincial or Municipal regulations, bylaws, codes, or licences. If any information on this website is inconsistent with any applicable code/regulation, the appropriate code/regulation from the applicable regulatory governing body takes precedent
