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The DAP INC 7079818211 Dynaflex Ultra is a 10.1 oz advanced elastomeric sealant formulated for exterior and interior use on windows, doors, siding, and trim. It delivers a permanently flexible, weatherproof seal with strong adhesion to common building materials. The sealant meets ASTM C920 Class 35 and complies with AAMA 802.3 Type 1, AAMA 803.3 Type 1, and AAMA 808.3 Type 1 standards. It resists UV fading, chalking, crumbling, cracking, and dirt buildup, and carries a lifetime mold, mildew, and algae resistance guarantee. Contractors and installers will find it VOC compliant, low in odor, and suitable for both residential and commercial building envelope work.
Dynaflex Ultra is suited for sealing gaps and joints around windows, doors, siding panels, and trim in residential and light commercial construction. The product is paintable in one hour and rain ready shortly after application, which supports faster job completion and reduced callback risk. It tools smoothly directly from a standard caulk gun and cleans up with water. Its exterior and interior rating makes it a single-product solution for building envelope sealing tasks handled by carpenters, general contractors, and weatherization crews.
Designed for use on common building materials including wood, vinyl, aluminum, fiber cement, masonry, and composite trim in window, door, siding, and trim sealing applications for both exterior and interior use.
Application is performed with a standard caulk gun; surface should be clean, dry, and free of loose material before sealant is applied. Power down any adjacent electrical components and follow site safety protocols before beginning weatherization work on exterior envelope assemblies. Water cleanup should be completed before the sealant skins over. Refer to local building codes and manufacturer instructions for joint sizing and surface preparation requirements.
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