DRIPSTOP is a factory-applied anti-condensation membrane used on metal roofing panels to help control moisture buildup and improve building performance. It is designed to address one of the most common challenges in metal roof systems, condensation caused by temperature and humidity changes.
What is DRIPSTOP?
DRIPSTOP is a specially engineered felt-like membrane made from durable polyester and rubber materials. It is factory-applied to the underside of metal roof panels during the manufacturing process, ensuring consistent coverage before the panels ever arrive on site.
Because it is installed at the factory level, DRIPSTOP integrates directly into the roofing system and installs along with the panels.
How DRIPSTOP Works
DRIPSTOP works by controlling condensation through absorption and evaporation.
The membrane contains thousands of microscopic pockets designed to capture moisture. When condensation forms on the underside of a metal roof panel, instead of forming droplets that fall into the building, the moisture is absorbed and held within the material.
As conditions change and temperatures rise above the dew point, the moisture naturally evaporates back into the air as normal humidity.
This creates a continuous, passive cycle:
- Condensation forms on the metal surface
- Moisture is absorbed into the DRIPSTOP membrane
- Conditions shift and moisture evaporates
- The process repeats as needed
No electricity, drainage systems, or maintenance are required.
Key Benefits of DRIPSTOP
Condensation control
Helps prevent dripping water inside the building and protects interior spaces.
Factory-applied consistency
Ensures even, reliable coverage across all panels.
UL 723 fire rating
Meets requirements for flame spread and smoke generation.
Mold and mildew resistance
Made with anti-microbial polyester and rubber materials to resist growth.
High moisture capacity
Can hold up to 10 times its weight in water (over 1 quart per 10 sq. ft.).
Noise reduction
Can help reduce rain and exterior noise by up to 20%.
Durability
Resistant to tearing, deterioration, and long-term environmental exposure.
Agricultural and commercial use
Commonly used in barns, livestock buildings, shops, and storage facilities.
Low maintenance
Requires no upkeep once installed.
Easy cleaning
Can be rinsed with a hose or pressure washer if needed.
Long-term performance
Proven effectiveness across a wide range of climates for over 15 years.
Warranty friendly
Does not void substrate warranties when properly installed.
Where DRIPSTOP is Commonly Used
DRIPSTOP is especially beneficial in buildings where condensation is more likely to occur, including:
- Agricultural barns and livestock facilities
- Equipment and machinery storage buildings
- Workshops and fabrication shops
- Garages and hobby buildings
- Commercial and industrial metal structures
- Unconditioned storage buildings
In these environments, moisture control plays a major role in protecting both the structure and its contents.
Why DRIPSTOP is a Valuable Addition to Metal Roofing Systems
Condensation is often overlooked until it becomes a problem. Once it starts, it can lead to ongoing issues that affect both building performance and usability.
DRIPSTOP provides a simple, passive solution that manages moisture at the source. By capturing condensation and allowing it to safely evaporate, it helps maintain a cleaner, drier, and more controlled interior environment without adding complexity to the roofing system.
For metal roofing applications where long-term durability and interior protection matter, DRIPSTOP is a proven and effective option.
Why Choose Ramco?
At Ramco Supply, we take pride in manufacturing metal roofing, metal siding, custom trim, and flashings in Northern Indiana.
Delivery in 48 Hours or Less – Get the materials you need, fast.
Independently Tested Thicker Steel – Every panel is crafted from thicker steel that’s UL Listed for long-lasting performance.
State of the Art Equipment– Ultra-clean, state-of-the-art manufacturing facility produces consistently higher quality products in less time.
Talk to a Real Person – You’ll always speak with a live representative, never an automated system.
If you’re considering a metal roof, let the experts at Ramco guide you through the process.