New! Profile Venting Material

Marco’s newest innovation: a profile-cut stick or roll product designed to snugly fit most roof panel configurations.

  • Won’t absorb moisture, which can freeze and block all ventilation
  • 2 beads of M63 Marco proprietary adhesive for superior hold
  • Easy, one-person installation
  • 40-year limited warranty
  • ASTM testing: D1929, D737
  • Available in box or roll quantities

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Flex Pro


Marco’s FlexPro™ Profile Venting Material vents, protects and lasts like no other. While polyurethane products constantly expand (as they soak up water) and contract (as they dry out) causing them to disintegrate and fail, FlexPro offers 40 years of Weather-Tite performance. Its specially formulated polyester— manufactured from recycled material—prevents moisture absorption and holds together to keep out pests. It’s also extremely durable, flame-resistant, clog-resistant, and tear-resistant.

FlexPro is a balanced combination of features from our superior LP2 and economical Flex-O-Vent products. Available as a roll or profile-cut stick, FlexPro provides plenty of cooling air flow, which is vital to meet building codes, reduce utility costs, and minimize long-term building damage caused by improper ventilation.


Net Free Area: 26 sq. in. for FlexPro Panel Fit – 1-1/8” free-standing product*
Available In: 3′ stick, 20′ and 50′ rolls
Adhesive: 2 beads of M63 All Weather Adhesive
Air Permeability: >800 cubic feet per min.
Tear Strength: 3.5 ppi
Tensile Strength: 16 psi – elongation 175%
Compressive Strength: 1.8 psi at 75%
Abrasion: No damage

*Effective Net Free Area varies based on product height, panel profile, and installation methods.

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Installation Question?

Easy, One Person Installation

With FlexPro, which comes 75 feet to a box in twenty-five 3-foot sections, one size fits most panels. To install FlexPro, simply peel and stick the product to the metal roof, careful to match the custom-cut contours to roof ridges. Next put the ridge cap in place and fasten down-slope from the FlexPro product.

Step 1:

FlexPro comes in various panel configurations, roll and stick package options. Apply the FlexPro Ridge Vent to metal roof by removing the backing paper.

Step 2:

Align the FlexPro Ridge Vent 1/2”-1” up-slope from the edge of the ridge cap. Place onto metal roof with adhesive side down. Note that the adhesive is strong and once put in place it will be hard to move. Be sure the FlexPro Ridge Vent is in place the first time.

Step 3:

When attaching consecutive FlexPro Vents, butt fit the pieces together. Marco’s Weather-Tite Metal Roof Sealant can be used to seal the butt joint. Place ridge cap over FlexPro. Secure in place with Marco QuickGrip/QuickDrill fasteners; fasten through the metal roof ridge locations, avoiding penetrating the FlexPro material, using a min. 3300 rpm screw gun.