The Ubbink OFT 2 Flat Roof Construction Vent is a 110mm breather vent designed specifically for built-up felt roofing systems. Whether you’re working on a new build or a roof renovation, this vent provides a reliable way to ventilate construction voids and reduce the risk of trapped moisture.
Its low-profile design ensures a discreet finish, making it ideal for maintaining a clean, professional roofline appearance without compromising performance.
Efficient Ventilation, Built to Last
The OFT 2 features a large free ventilation area, allowing it to efficiently release trapped air and moisture from below the roof structure. This makes it particularly useful in flat roof constructions where breathability is essential to prevent condensation and long-term damage.
Made from high-quality polypropylene (PP), the vent is built to handle all weather conditions. It won’t warp, degrade, or crack, even under prolonged UV exposure or extreme temperatures, ensuring lasting performance and reliability.
Designed for Practicality and Style
In addition to its functional benefits, the OFT 2 also boasts an elegant, unobtrusive design. Its minimalist profile allows it to blend into the roofing surface while continuing to provide essential airflow. It’s a smart choice for roofers and contractors looking for a dependable construction vent that doesn’t compromise on aesthetics.
Key Features
110mm breather void vent for built-up felt roofs
Provides high free vent area for efficient airflow
Low-profile, discreet design for visual consistency
Made from durable, weather-resistant polypropylene
Suitable for both new builds and refurbishment projects
Performs reliably in all weather conditions
Sleek finish for a modern, clean appearance
Frequently Asked Questions
1. What is the main purpose of the OFT 2 vent?
The OFT 2 is used to ventilate **construction voids** in built-up felt roof systems, helping to release moisture and prevent condensation build-up beneath the roofing layers.
2. Is this vent suitable for other roofing materials?
The OFT 2 is specifically designed for **built-up felt roofing**, and may not be suitable for other types like EPDM or GRP without additional compatibility checks.
3. Will the vent hold up in extreme weather conditions?
Yes. Made from **high-quality polypropylene**, the OFT 2 is built to withstand **harsh weather**, including rain, snow, UV exposure, and temperature fluctuations.
Check out our full range of roofing supplies.
Browse more flat roof ventilation available online.
