Black Modified Rubber Sealant
Great Adhesion to Single-Ply with Excellent Elongation! Black Blends Nicely on EPDM!
Del-Val 231 Modified Rubber Sealant (Black) is a single-component, thermoplastic rubber mastic formulated for protecting seams, penetrations and other detail areas over metal, wood, EPDM, APP, TPO and Hypalon. Del-Val 231 Modified Rubber Sealant (Black) provides a durable, flexible, weather resistant membrane with excellent elongation, tensile strength and UV protection.
Great for Repairing EPDM, TPO, Skylight & Penetration Perimeters, Seams & Other Roof Equipment. Best Day’s End Dry-in / Night Seal!
Quick Application Guide
Dry to the Touch
Per 80 Linear Feet
Apply Del-Val 231 by brush at a rate of 80 linear feet per gallon, according to the substrate and condition. Dry time is 1-6 hours. Cure time is 48 hours.
Surface must be pressure washed clean, free of all loose particles, dirt debris and other contaminants that could inhibit adhesion. Wire brushing may be recommended. The surface must be completely dry to prevent blistering of the product. Must mechanically mix coating before using.
Apply to a clean dry surface using a brush, roller or squeegee. For best results weather should be clear with no threat of rain for 48 hours.
Single-Ply & Metal Surfaces: Apply at the rate of approximately 1 gallon per 80 linear feet.
Cleanup Del-Val 231 Black Modified Rubber Sealant
Clean tools with Del-Val Orange Cleaner & Degreaser or mineral spirits, taking necessary precautions when handling combustible liquids.
Make Your Repairs, Then Coat Your Roof:
Thermoplastic Roof Coating Black
Looking for a Different Color? Try One of These.
Gray Modified Rubber Sealant
White Modified Rubber Sealant
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