- Seals & Protects EPDM Edges: Designed for seams, T-joints, flashings, and terminations to prevent leaks
- Strong Adhesion to Multiple Surfaces: Bonds to EPDM, metal, wood, and concrete for versatile use
- Built for Long-Term Durability: Resists UV, heat, and moisture for reliable performance on commercial roofs
- Easy-to-Apply, No Sag Formula: High-solids sealant stays in place on vertical and horizontal surfaces
Price: $6.52
Item #HBF-CT-6343
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Description
The CT-6343 Millennium EPDM Edge Sealant is a one-component, high-solids, low-VOC compound designed to seal and protect exposed EPDM membrane edges, seams, and flashings. It offers excellent adhesion to EPDM, metal, wood, and concrete substrates. The black formulation resists UV light, heat, and moisture for long-term performance in commercial roofing applications.
Key features:
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Low VOC formulation (<250 g/L)
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High solids content (~80%)
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Excellent adhesion to EPDM, metal, wood, and concrete
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Resistant to UV light, heat, and moisture
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Suitable for both vertical and horizontal applications
Specifications
SKU: CT-6343
Base polymer: EPDM rubber
Color: Black
Density: 11.6 lbs/gal
Tack-free time: ≤ 1 hour
Cure time: Approximately 72 hours
VOC content: < 250 g/L
Solids content: 80 %
Flash point: 10 °C (50 °F)
Service temperature range: -40 °F to 200 °F (-40 °C to 93 °C)
Application temperature range: 20 °F to 120 °F (-6 °C to 49 °C)
Coverage: 20–22 lineal ft per ¼″ bead (300 mL cartridge)
Shelf life: 24 months @ 40 °F to 110 °F (4 °C to 38 °C)
How To
- Ensure all EPDM seams, flashings, and terminations are properly installed according to the roof system manufacturer’s guidelines.
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Clean surfaces to remove dust, oils, and contaminants. Allow to dry thoroughly.
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Cut nozzle to desired bead size and install a feathering tip if available.
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Apply a ¼″ (6.4 mm) bead of sealant along the exposed membrane edge or flashing.
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Tool the bead if necessary so it feathers smoothly onto the deck surface. Allow the sealant to cure completely before exposure to heavy weather.
FAQs
Q: Can CT-6343 be used as a splicing adhesive for EPDM membranes?
A: No, it is formulated only for sealing exposed edges and flashing details.
Q: Is the CT-6343 suitable for VOC-regulated markets?
A: Yes, its low-VOC formula meets requirements for regulated areas.
Q: What substrates does it adhere to?
A: It bonds effectively to EPDM, metal, wood, and concrete when surfaces are clean and dry.
Q: What are the ideal temperature ranges for use?
A: Apply between 20 °F and 120 °F (-6 °C to 49 °C); service range is -40 °F to 200 °F (-40 °C to 93 °C).
Q: Is tooling required after application?
A: Tooling is only needed if a feathering tip is not used.
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