Boss Pro | 142930 | 28 oz Tan 822 Expansion Joint Sealant

The Boss Pro 142930 822 Expansion Joint Sealant is a one-component, self-leveling sealant formulated for expansion joints in pool decks, patios, driveways, sidewalks, and other concrete surfaces. Packaged in a 28 oz cartridge, this tan sealant flows easily into horizontal joints and cures at room temperature to form a durable, flexible rubber seal that resists cracking and weathering.

Designed for professional construction and repair applications, Boss 822 bonds to concrete, masonry, wood, glass, vinyl, and many plastics while providing long-lasting flexibility for joints subject to movement and temperature changes.

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Key Features

• 28 oz cartridge of self-leveling expansion joint sealant

• Tan finish for decorative concrete applications

• One-component, ready-to-use formula

• Forms a durable, flexible rubber seal after curing

• Excellent adhesion to concrete, masonry, wood, vinyl, glass, and many plastics

• Ideal for pool decks, patios, sidewalks, driveways, and expansion joints

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Product Overview

Boss Pro 822 Expansion Joint Sealant is engineered to provide a permanent, flexible seal for horizontal expansion joints and cracks. Its self-leveling consistency allows it to flow into properly prepared joints, creating a smooth finish without tooling while accommodating joint movement caused by thermal expansion and contraction. It offers ±25% joint movement capability (50% total movement) and remains flexible across a wide temperature range.

Ideal for residential and commercial concrete applications, this sealant resists moisture, weathering, ozone, vibration, and temperature extremes, making it well suited for outdoor installations exposed to changing environmental conditions. For best results, install in clean, dry joints and follow the manufacturer's recommendations for joint preparation, backer rod selection, and curing.