GoBoard® Pro Sealant 10.3oz is a high-performance, moisture-curing waterproof sealant designed for professional contractors and tile installers. This flexible tile sealant provides strong adhesion to GoBoard® panels and a wide range of building materials, ensuring reliable joint waterproofing and fastener protection. With its low odor and environmentally friendly formula, GoBoard® Pro Sealant supports efficient indoor and outdoor tile installations while meeting ASTM and ANSI waterproofing standards.
Key Features of GoBoard® Pro Sealant
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Easy Dispensing: Compatible with standard caulk guns and works in various temperatures for versatile job site application.
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No Sag Formula: Applies cleanly on vertical and horizontal surfaces without dripping or sagging.
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Dual Functionality: Acts as a durable sealant and adhesive for GoBoard® and other substrates in interior and exterior tile projects.
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Fast Skin Over: Allows same-day tile installation to speed up project timelines.
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Flexible Movement: Accommodates up to 25% joint movement for long-lasting durability.
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Weather Resistant: Provides long-term resistance against weathering and UV exposure.
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Wide Bonding Range: Bonds effectively to metals, plastics, concrete, wood, foam, and ceramics.
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Paintable & Non-Yellowing: Maintains finish quality without discoloration over time.
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Environmentally Friendly: Low VOC, solvent-free, non-corrosive, and low odor for safer use.
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Industry Certified: Meets ASTM C920, Type S, Grade NS, Class 25 or better standards for professional applications.
GoBoard® Pro Sealant Specifications
Specification |
Details |
Color |
White |
Solids |
100% |
Density |
13.4 lbs/gal |
Extrusion Rate (ASTM C1183) |
110 g/min |
Tack Free Time (@77˚F/50% RH) |
15 min |
Allowable Joint Movement (ASTM C719) |
25% |
Hardness, Shore A (C661) |
55 |
Tensile Strength (D412) |
TB 1.98 MPa, EB 250% |
24 Hour Cure Depth (77°F/50% RH) |
3 mm |
UV-A Rating (G53) |
10,000 hrs |
Temperature Resistance |
250°F |
Cartridge Volume |
10.3 oz / 306.4 ml |
Usage/Application Tips for GoBoard® Pro Sealant
For waterproof GoBoard® tile installations, apply GoBoard® Pro Sealant generously to all joints and fastener penetrations. Fill 1/8” gaps fully and spread excess sealant at least 1 inch beyond edges to create a watertight substrate that complies with ANSI A118.10 standards.
Warranty & Reliability
Johns Manville guarantees GoBoard® Pro Sealant meets all stated specifications when used with GoBoard® installations, ensuring reliable waterproof protection and adhesion.
Choose GoBoard® Pro Sealant 10.3oz for a durable, flexible, and fast-curing waterproof sealant that enhances your tile installation projects. Order now to improve your workflow and installation quality.
