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Rooftop Grease Buildup and How To Prevent It
• July 27, 2026
Categories: Hoods
Rooftop Grease Buildup: Causes, Risks, and How to Prevent It
Rooftop grease buildup is a common (and often overlooked!) issue in commercial kitchens. If your commercial kitchen exhaust hood system isn’t properly maintained, grease can escape through the system and accumulate on your roof, leading to safety hazards, code violations, and costly damage.
Here’s what causes it, and how to prevent it.
What Causes Rooftop Grease Buildup?
Your restaurant hood system is designed to capture grease-laden vapors during cooking. However, not all grease is contained. Over time, excess grease travels through:
• Hood filters
• Ductwork
• Exhaust fans
Eventually, this grease can reach the rooftop, especially if there are system inefficiencies or maintenance gaps.
How Grease Escapes Your Exhaust System
Even a properly functioning commercial range hood system can allow small amounts of grease to pass through.
Common causes include:
• Filter Inefficiency: Dirty or clogged filters allow grease to bypass capture
• Duct Accumulation: Grease builds up and moves through the system over time
• Fan Base Overflow: Excess grease collects and spills onto the roof
The Most Common Culprits
1. Exhaust Fan Leaks: Improper sealing around fan joints ca...
   
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Hood Placement and Clearance to Combustibles - What it Means & Why it Matters
• July 13, 2026
Categories: Hoods
Getting hood placement and clearance right isn’t optional; it’s critical for safety, performance, and passing inspection. In this guide, HoodMart breaks down commercial kitchen hood clearance requirements, what “clearance to combus...

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What are the Food Truck Range Hood Requirements?
• July 06, 2026
Categories: Hoods
As a commercial kitchen exhaust hood manufacturer, the team at Hoodmart often get asked about the exhaust hood requirements for food trucks. In this blog post, we will provide some general guidance on what these requirements might entail.   Fi...

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Commercial Pizza Cooking and the Role of Pizza Hoods
• June 28, 2026
Categories: Hoods
Why Every Pizza Oven Needs the Right Exhaust Hood Running a commercial pizza operation takes more than great ingredients-it requires the right ventilation setup to keep your kitchen safe, compliant, and efficient. High heat, grease vapors, and const...

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How Many CFM Do You Need for a Commercial Ventilation Hood? | Hoodmart
• June 22, 2026
Categories: Hoods
Choosing the right airflow capacity is one of the most important decisions when selecting a commercial ventilation hood. If you've ever wondered, “How many CFM for a kitchen hood is enough?”, you're not alone. CFM, cubic feet per minute, ...

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