Product Description

TRP’ #509 All Weather Modified Mastic is a heavy duty commercial grade rubber modified mastic specifically designed to be applied by the professional roofer under all weather conditions, wet or dry. #509 will bond under water for temporary or permanent repairs. #509 All Weather Modified Mastic is specifically designed for use with modified bitumen membranes, base sheets and ply sheets. The modified properties provides excellent adhesion, elongation and recovery characteristics. #509 All Weather Modified Mastic adheres to all surfaces wet or dry. Can be used on all flashings, around skylights, gutters, crevices, seams, flashings and repairs on SBS modified membranes. #509 All Weather Modified Mastic is excellent for repairs on conventional Built Up Roofing membranes where substrate movement is expected to occur. #509 All Weather Modified Mastic eliminates burn hazards associated with hot kettles and propane torches, and is ideal where their use is prohibited. This product is formulated for repairs and seams on SBS Asphalt Modified Roll Roofing Sheets. Easy spreading and application in all weather conditions . Specially formulated for anti-sag properties and will not crack under high heat conditions,. Carefully mixed homogeneous blend of high-grade fibers, select asphalt, minerals, plasticizers, and aromatic hydrocarbons. Fortified with Power Gel Technology so it will remain highly resilient and durable through all seasons. Recommended Substrate application on BUR, SHINGLE , TILE , MOD BIT , CONCRETE & METAL. NOTE: DO NOT use on APP, TPO, EPDM, or PVC. Meets ASTM D 4586 and ASTM D 3409. Miami-Dade NOA Compliant.

Application Methods

Application rates will vary by surface, porosity, and job conditions.

Available Standard Colors

Color swatches are representative. Actual coating sample provided for approval. Custom colors available upon request with a 600 gallon minimum.

Data sheets