RUBBERIZED ASPHALT MASTIC DESIGNED FOR TERMINATIONS, PATCHES, AND DETAIL SEALING IN WATERPROOFING APPLICATIONS
GCP BITUTHENE® Mastic is a high-performance, rubberized asphalt-based sealant engineered to provide strong adhesion and reliable sealing in waterproofing systems. It is specifically designed to seal membrane terminations, patch edges, and overlap details to ensure a continuous moisture barrier.
With excellent adhesion to structural concrete, masonry, and wood substrates, BITUTHENE® Mastic is a dependable solution for both vertical and horizontal applications.
APPLICATIONS
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Sealing membrane terminations
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Edges of patches and membrane overlaps
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Detail areas and penetrations
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Temporary cutoffs in waterproofing systems
On vertical installations, mastic should be applied to both the top and bottom terminations. At the bottom edge of vertical applications, trowel upward and use liberally at membrane terminations.
FEATURES & BENEFITS
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Excellent adhesion bonds to concrete, masonry, and wood
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Designed for detail work seals edges, laps, and terminations
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Compatible with BITUTHENE® membranes integrates into full waterproofing systems
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Easy application apply with caulking gun or trowel
VOC content: 225 g/L
(Refer to technical documentation for regulatory requirements.)
APPLICATION GUIDELINES
Apply with a caulking gun or trowel.
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Standard bead: level to approximately 1/8" (3 mm) thickness and 1/2"–1" width
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Temporary cutoff: trowel to 0.060" (1.5 mm) thickness
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Membrane may be installed over thin cutoff the following day
Clean tools with mineral spirits after use. Follow all SDS and safety recommendations. Vapors from solvent-based products are harmful and flammable. Review product label and SDS prior to application.
COVERAGE
Actual usage will vary depending on job conditions and detailing requirements.
PACKAGING
RESOURCES
