3246 Joint Sealer Cartridges ( 45A Durometer )

Name: 3246 Joint Sealer Cartridges ( 45A Durometer )
SKU: 2226
Availability: InStock

$78.30

The 3246 Caulking for Joints is a high-quality sealing solution designed for everyday consumers tackling large-width joints in exterior applications. This caulk is perfect for sealing gaps and cracks in outdoor surfaces such as driveways, patios, and foundations. Its 1A:1B mix ratio makes it easy to apply with simple hand mixing, ensuring a secure and lasting bond. The product offers superior durability and flexibility, providing effective protection against the elements while allowing for movement in large joints. Sold in convenient 2/10/110 units with a minimum order of 12 cartridges, it’s an ideal choice for both residential and light commercial outdoor projects.

Kits

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SKU: N/A Category: 3000 Series

Description

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Caulking for Large-Width Joints: Durable, Flexible Sealant for Exterior Application

Uses

Expansion joints – exterior concrete
Bridges
Parking structures
Airfields, meets FAA P605
Decks
Loading docks
Moving expansion joints
Cold storage thresholds
Garage floor stem wall and floor joints

Advantages

High-density, true polyurea.
Excellent elongation in cold conditions.
Meets FAA P605 and ESS 200 military specifications.
Drive-over ready in 30–45 minutes.
Resistant to moisture, chemicals, abrasion, and impact.
No VOCs, no odor.

Applications

3246 PenJoint is suitable for:

Expansion joints in parking structures, bridges, and airfields.
Loading docks, decks, and garage floor joints.
Cold storage thresholds and other moving expansion joints.

Preparation

Ensure concrete has cured for at least 28 days.
Abrade joint walls to a depth of approximately 1.25 inches using a diamond saw.
Remove contaminants like oils, wax, and curing agents.
Clean and vacuum joint walls thoroughly.
For optimal bonding, perform an acetone wash after vacuuming.

Priming & Moisture Vapor Reduction

Use ASTC PenPrime 7001 for best results, especially for large moving joints.
Pre-treat high moisture vapor areas with ASTC CMW to reduce pressure.

Application

Use ASTC-recommended 1:1 displacement pumps or LS pumps.
Warm the product to 72°F before application.
Fill joints from the bottom up to slightly below grade.

Additional Features

Depth: Recommended depth is half the width of the joint over a backer rod.
Movement Tolerance: Supports up to ±25% movement.
Cold Conditions: Pre-condition product and equipment for use below freezing.