Manufacturer and supplier of roof products and accessories for the metal building industry since 1964

How to Choose Between Smoke Vents and Roof Access Hatches

November 25th, 2024 | Eric McClung

At R&S Manufacturing and Sales, we often hear from customers who are unsure about the difference between smoke vents (also sometimes called smoke hatches) and roof access hatches.

Smoke Vents vs Roof Access Hatches

While both are installed on roofs and may look similar at first glance, their purposes are quite different. In this post, we’ll break down the key differences to help you make the right choice for your project.

 

Smoke Vents: Safety for Smoke and Heat Release

Smoke vents, or smoke hatches, are primarily designed for safety. They automatically open to release smoke, heat, and harmful gases during a fire. This allows firefighters to see better, access the source of the fire, and minimize damage. Smoke vents also help keep building occupants safe by providing a way for smoke to escape, reducing the risk of asphyxiation during an evacuation.

Key features of smoke vents include:

  • Automatic Activation: Most smoke vents open automatically when triggered by a fire alarm or a heat-sensitive fusible link.
  • Fire Safety Compliance: They help buildings meet fire safety codes by providing an essential means of venting smoke and heat.
  • Specialized Design: These vents are built with fire safety in mind and are often part of a building’s broader life safety system.

In short, smoke vents are critical life safety devices designed to protect occupants and firefighters by reducing smoke accumulation during an emergency.

 

Roof Access Hatches: Convenience for Roof Maintenance

Roof access hatches serve a completely different function. They provide safe and easy access to the roof for maintenance personnel, contractors, or building owners. Roof access hatches are commonly used for maintaining HVAC systems, conducting roof inspections, or performing general maintenance tasks.

Key features of roof access hatches include:

  • Manual Operation: Unlike smoke vents, roof access hatches are manually operated. They are equipped with handles or latches, allowing maintenance personnel to open them when needed.
  • User-Friendly Access: These hatches often come with built-in ladders or fixed steps, making it easier for workers to reach the roof safely.
  • Weather Sealing: Roof access hatches are designed with weatherproof seals to protect against rain, snow, and other elements, ensuring that the building interior stays dry.

Roof access hatches are ideal for routine roof access rather than emergencies. They provide a secure, reliable way for maintenance workers to move between the roof and building safely.

 

So, can a smoke vent be used for roof access?

Smoke Vents vs. Roof Access Hatches – Main Differences Explained:

  • Purpose: Smoke vents are for emergency smoke and heat release, while roof access hatches are for routine access to the roof.
  • Activation: Smoke vents often open automatically in response to a fire; roof access hatches are manually operated.
  • Design Focus: Smoke vents are part of fire safety systems, while roof access hatches focus on convenience and safe roof entry.
  • Limitations: Smoke vents are not designed for roof access. Using them in this way will void the warranty and may cause costly damage and repairs. 

Understanding these differences is crucial for choosing the right product for your building. If your goal is to ensure fire safety and compliance with fire codes, smoke vents are the appropriate choice. However, if you need to provide easy access to the roof for maintenance purposes, a roof access hatch is what you need.

 

Still Have Questions?

R&S is here to help. Whether it’s about automatic smoke vents or roof access hatches, our team is ready to guide you with the right solutions for your building.

 

Feel free to contact us with any questions or for assistance in selecting the best products for your project.

 

Featured: ExoVent™ Smoke Vents And Roof Access Hatches