Valley Cap

Valley Cap

The Valley Cap is made of EPDM rubber, has UV inhibitors, and comes with a 20-year weather resistant warranty. The Valley Cap is easy to install, safer to use, comes in two different sizes, and eliminates the need to force the ridge line under the primary panel. Best of all, it makes for a more esthetically pleasing leak-proof roof.

Benefits

  • Leak-Free Protection – Its seamless design helps prevent roof leaks and water intrusion, protecting the home from moisture damage.
  • Dual-Purpose Venting – Designed to vent both bathroom fans and dryers through the roof, reducing the need for multiple roof penetrations.
  • Improved Airflow – Helps efficiently remove moisture, heat, lint, and odors from the home.
  • Built-In Flapper – The flapper helps prevent backdrafts, outside air intrusion, pests, and debris from entering the vent system.
  • Installation Flexibility – Available with or without an attached collar to fit different installation needs and duct connections.
  • Cleaner Roof Appearance – The low-profile, seamless construction provides a more finished and professional look on the roof.
  • Durability – Made to withstand outdoor weather conditions while maintaining reliable performance over time.
  • Reduced Moisture Problems – Properly exhausting bathroom humidity can help reduce mold, mildew, and condensation buildup inside the home.

Advanced Ozone Resistance tested to – EPDM 70 hours @500 pphm

High Temperature Resistance test: 
Intermittent – +135° C (+275°F)
Continuous – +100°C (+212°F)

Low Temperature Resistance: -55°C (-67°F)

Compression Set Maximum – 25%

Related Products

Related Products

Standard RoofBoot™ Square Flexible Sleeve

Our Standard RoofBoots feature a flexible square base designed to form a seal on almost any panel configuration and roof pitch, regardless of the pipe location or type of roofing surfaces (including metal, plastic, tile and more).

Specialty Boots

Extreme angles, retrofits, multi-flash, solar, multi-port and more, we have the specialty boots to provide the perfect fit and seal your unique roofing designs. All with great warranties and proven performance.

Box Gutter Expansion Joint

Our “stretch and seal” roof flashing system is ideal for square ducts, chimneys, skylights and more. It joint flashes hi-rib and standing-seam profiles and easily flashes between dissimilar materials with a superior fit and seal.
Additional Resources

ADDITIONAL RESOURCES​​

VENTILATION CALCULATOR​​

Calculate the exact amount of ventilation needed for a well-balanced system.

TECHNICAL TOOLS​​

Dive deep into product sheets, diagrams, and full spec breakdowns. 

Roofing FAQ

Learn everything you need to know about ventilation.

Marco Industries