The Design Advantage of Modular Airtight Trench Covers

Modular airtight trench covers combine two essential features: removability and airtightness. More than just a cover, they function as a system—significantly improving flexibility during construction and maintenance operations on-site.

Lightweight and Adaptable FRP: Easy to Install, Ideal for Changing Site Conditions

FRP (Fiberglass Reinforced Plastic) is known for its lightweight properties, making it the ideal material for modular trench cover systems. Our FRP grating designs weigh only about one-fourth of a traditional iron cover. As a result, no heavy machinery is needed—one person can carry, install, or remove the cover with ease.

This flexibility proves particularly useful in locations that require frequent access or adjustments, such as sewer inspection ports, stormwater interceptors, or underground cable maintenance points. For example, a construction team in a southern Taiwan science park reported that using modular FRP trench covers helped reduce on-site adjustment time by nearly 40% during phase transitions of the project.

Despite its light weight, FRP offers robust structural strength, high drainage capacity, and excellent airtight sealing—proving that lightweight doesn’t mean low performance.

Durable Airtightness with Resin Concrete: Odor Control and User Comfort

While flexibility is essential, airtightness is the other key to a successful trench cover system. You might wonder, why does a drainage system need to be airtight? In fact, it's crucial for urban odor control and overall public hygiene. Gaps between covers and bases can allow foul odors to escape and may even breed mosquitoes and other pests.

This is where resin concrete excels. Our trench systems use resin concrete with extremely low water permeability and strong chemical resistance. Combined with precision sealing structures, they effectively block odors and volatile organic compounds.

Take for instance a major underground parking facility in Taoyuan. After we introduced our modular airtight resin concrete system, odor complaints disappeared and maintenance frequency dropped by around 30%—a testament to the dual benefits of airtightness and durability.

Structural Efficiency in Base Integration

Adaptable Resin Concrete Bases: Stable, Fast to Install, and Future-Proof

A high-quality trench cover is only as good as its foundation. A loose or unstable base can compromise the entire system. That’s why we emphasize integrated modular resin concrete bases, which can be adjusted for height and size based on the construction site’s needs and fit tightly with the cover.

This offers two major benefits:

• Reduced on-site labor: With pre-fabricated modular components, there's no need for in-situ concrete pouring or cutting.
• Easier upgrades: If future drainage needs change, you can simply replace the cover or adjust the base height without major overhauls.

In a smart factory project in Hsinchu, our modular drainage system allowed layout changes to be implemented by simply swapping out select covers and adjusting the base modules. The project timeline was cut in half compared to traditional methods, and we avoided road closures and operational downtime.

Conclusion: Modular Airtight Trench Covers Bring Efficiency and Quality Together

From the lightweight removability of FRP, to the airtight durability of resin concrete, and the flexibility of modular base systems, modern trench covers are no longer just passive infrastructure. They are an active solution—designed to make construction faster, maintenance easier, and urban environments cleaner.

At All Leader, we don’t just provide products—we provide complete system solutions. From design consultation to technical support, we help you consider long-term performance, upgrades, and maintenance right from the start.

If you're planning to upgrade or optimize your drainage systems, consider incorporating modular airtight trench covers into your project thinking. You’ll soon realize that real engineering efficiency starts with every well-designed cover.

Learn more about our drainage solutions: https://www.all-leader.com/