Lucas 8500 100 Percent Silicone Mastic Sealant 3.5 Gallon

It has minimal odor, contains no solvents and less than 10 grams per liter VOC. Use to seal penetrations and terminations prior to application of Lucas #8000 100% Silicone Roof Coating. Excellent adhesion to concrete, masonry, vinyl, fiber cement, polyurethane foam, EPDM, aged acrylic coatings, granular cap sheet, wood, metals, Kynar and most other common building materials. May be applied to wet surfaces. Lucas #8015 TPO Primer is required for application TPO roofs. Lucas #8500 is a non-reactive oxime, neutral cure silicone and will bond extremely well to a wide variety of surfaces. It does not emit acidic byproducts during cure like acetoxy silicone sealants.

• Viscosity ASTM D 2196 400,000 cps
• Slump ASTM C 2202 No Sag
• Solids by Weight ASTM D 1644 98%
• Solids by Volume ASTM D 2697 97%
• Weight Per Gallon ASTM D 1475 11.4 lbs.
• Hardness – Shore A ASTM C 661 26
• Tensile Strength ASTM D 2370 200 psi
• Elongation ASTM D 2370 500%
• Movement ASTM C 719 +/-25%
• Skin Time ASTM C 679 30 Minutes
• Tack Free ASTM C 679 1 Hour
• Flash Point ASTM D56 None
• VOC EPA 24 Less than 50g/l
• Container Size: 3.5 gal pails.
• Apply with a trowel or 4 inch chip brush at a minimum of ¼ inch thick and taper the edges of the application.

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