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Marco’s Weather-Tite™ Metal Roof Sealant

Formulated to outperform silicones, tri-polymers, and polyurethanes, Marco’s Weather-Tite Metal Roof Sealant provides a waterproof seal against water, wind, dust, dirt or other filtrations. Available in more than 30 standard colors, it is tack-free in 1 hour and is completely paintable (excluding translucent). This eco-friendly MS polymer sealant adheres to almost any common building substrate or material and features chemical curing of <1% VOC.

Marco’s Weather-Tite™ Metal Roof Sealant

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In tests against competitive products, Marco’s Weather-Tite Metal Roof Sealant proved to have minimal shrinkage, high tensile strength, faster skin cure times, less dirt pickup and low to no odor compared to solvent-based products. Tests also revealed no cracking, splitting, yellowing or adhesion failures. That’s because the paintable, UV-resistant MS-Polymer formula will expand and contract with the change of weather and temperature, extruding in extreme weather conditions (down to 0º F). This no-crack performance makes it the ideal choice for exterior applications and damp surfaces. It provides exceptional adhesion to Kynar and Hylar 5000, Galvalume, coated and uncoated metal surfaces, plastics, glass, PVC, masonry, stucco, wall panels, vinyl, wood, brass and other common building substrates.

Water Clean-Up: Yes
Non-Toxic: Yes
Non-Flammable: Yes
VOC-Compliant: <1% VOC
Cold Weather Extrusion: 0°F
Waterproof: Yes
Tensile Strength: 225 psi
Conforms to ASTM C920: Yes
Tack-Free: In 1 Hour @ 77° F/50% RH
Gap Filling: 1”
Service Temperature: -75° to 300°F for short periods of time
UV Rating: Conforms to ASTM G26
Elongation: 275%
Cartridge: Plastic – 10.1 oz.
Warranty: Limited
Hazardous Ingredients: None

How To Install

Marco’s Weather-Tite Metal Roof Sealant comes in a variety of colors and goes on easily. If touch-ups are necessary, it may be painted (excluding translucent) with a water-based paint after one hour of application.

Step 1

Make sure the surface is completely free of oil, grease, foreign material, contaminants, water repellents, form oils and laitance.

Step 2

Remove tube, locate separate applicator tip and cutoff dispenser end. Tool sealant in one continuous stroke.

Step 3

Dry-wipe excess sealant from surfaces while still uncured. Excess sealant smears may be removed with a VOC friendly solvent or cleaner.

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Learn about our other sealant products featuring Marco-proven performance.


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