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420 Mod Bit Adhesive - Brush Grade

420 Mod Bit Adhesive - Brush Grade

Tough and flexible, Mule-Hide #420 Mod Bit Adhesive – Brush Grade is a premium-quality, brush-grade, cold-applied bonding agent for use in installing SBS modified bitumen base sheets and SBS modified bitumen cap sheets. Fortified with high SBS content and reinforcing fibers, it delivers unsurpassed resiliency and durability. It is specially formulated for use with Mule-Hide self-adhering modified bitumen membranes.

  • Can be used to install SBS modified bitumen base sheets and SBS modified bitumen cap sheets to a variety of substrates, including structural concrete roof decks, existing smooth-surfaced asphalt built-up roofs, approved roof insulations, and glass fiber base sheets.
  • Can be used as an adhesive for APP sand back modified bitumen membranes.
  • Bonds gravel or mineral granules to built-up roofing systems and modified bitumen cap sheets.
  • Can be used in conventional build-up roofing systems.

System

ModBit
M&R
  • Flexible with cohesive properties
  • Provides superior lap strength
  • Eliminates the need for kettles and torches
  • Excellent 24-hour strength. Fully cured after 30 days
  • Does not damage conventional asphalt-based roofing membranes
  • Meets Miami-Dade-County Standards

Documents

PDS 420 Mod Bit Adhesive - Brush Grade
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SDS 420 Mod Bit Adhesive Brush Grade
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Florida Product Approval - Cements, Adhesives, Coatings
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Miami-Dade NOA - Asphalt Products NOA
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Asphalt Cements & Coatings Cross Reference Chart
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Maintenance & Repair Brochure
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Mod Bit Pocket Guide
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Mod Bit Pocket Guide (Spanish)
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OTC Regulation Update for Adhesives and Sealants
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Sell Sheet - 420 Mod Bit Adhesive - Brush Grade
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Single-Ply Roofing Accessories Guide
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Tech Bulletin - Cold Weather Installation
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Details

EXPANSION JOINT - SELF ADHERED

CUT CAP SHEET END LAPS - 45 DEGREE CUT

WALL FLASHING TERMINATION FOR MODBIT - OPTION 3
WALL FLASHING TERMINATION FOR MODBIT - OPTION 4
WALL FLASHING TERMINATION FOR MODBIT - OPTION 5

EPDM TIE-IN HOT STRIPPING

Options

Item ID Description Packaging Qty per Ctn Weight per Ctn Cover Rate
16MH4205 MH 420 MOD BIT ADHESIVE-BRUSH 5 GA Metal Pail 1 45 1-1.5 gallons per 100 sq. ft.

FAQs

The coverage rate for Mule-Hide #420 Mod Bit Adhesive – Brush Grade is approximately 1 to 1.5 gallons per 100 sq. ft. when applied to a smooth surface. (All values are approximate and may vary with ambient temperature and job conditions.)

Mule-Hide #420 Mod Bit Adhesive – Brush Grade can be applied using a high-pressure sprayer, a notched squeegee, or a brush.

NO. DO NOT use Mule-Hide #420 Mod Bit Adhesive – Brush Grade with PVC, TPO, EPDM or other single-ply roofing membranes.

Yes. DO NOT use Mule-Hide #420 Mod Bit Adhesive – Brush Grade in the following applications: • Over or under expanded polystyrene insulation. • With organic saturated felts

With proper storage, the shelf life of Mule-Hide #420 Mod Bit Adhesive – Brush Grade is 18 months from the date of manufacture.

Mule-Hide #420 Mod Bit Adhesive – Brush Grade should be stored at a temperature of at least 45°F but not above 120°F. It should be stored at room temperature for at least 24 hours prior to use.

Mule-Hide #420 Mod Bit Adhesive – Brush Grade should only be applied when the ambient temperature is at least 45°F and rising. Cold weather can result in uneven application and improper curing, and it will cause the product to stiffen, making application more difficult. Application is not recommended if the substrate temperature is above 140°F.