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MarcoFlex Weather-Tite™ Gunnable Butyl

MarcoFlex Weather-Tite™ Gunnable Butyl is a versatile ever-flexible sealant suitable for metal roofing, architectural panels, window glazing, expansion joints, flashing, and other bonding applications.

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Made In USA

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.

Weight:                              12-13 lbs./gal.                       ASTM D71-72
Color:                                 Tan or Light Gray                  Internal Lab
Order:                                 Light Solvent                        Internal Lab
Solids Content:                 90% +/- 2%                          ASTM C771-74
Vaper Transfer:                 <1 gram/day                          ASTM D96
Flashpoint:                         >102f – non-red label           ASTM D93-79
Slump:                                Max 3/16” @ 210f                  ASTM D2202
Water Absorption:            None                                      GSTM 21
Weathering:                       None at 1000 hrs.                 UV Light / Sunlamp
Service Temps:                 -40°F/-40°C to 249°F/120°C
Storage Temps:                0°F/-18°C to 100°F/38°C      *store in clean, dry area
Shelf Life:                           18 months
Cartridge:                           Plastic                                    – 10.1 oz.
Warranty:                            Limited
Hazardous Ingredients:    None

How To Install

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 cut off 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.

Related Products

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This versatile, trimmable end lap sealing tape joins metal to metal, and seals around windows, doors, roof vents, stacks, access doors, and other penetration points.
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X-Seal™

X-Seal expands to fill any shaped gap in the construction of metal buildings, doors and windows, concrete, wood, and more. It is adaptable to most roof panels, including hips and valleys.
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Additional Resources

ADDITIONAL RESOURCES​​

VENTILATION CALCULATOR​​

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

Learn More

TECHNICAL TOOLS​​

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

Learn More

Roofing FAQ

Learn everything you need to know about ventilation.

Learn More
Marco Industries
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