JOINTFILL 302 Flexible Control Joint Filler

Basic Use: Jointfill 302 is a two-component epoxy joint filler designed to be used in control and construction joints in concrete industrial floors. Jointfill 302 is a low modulus, flexible joint filler used in saw cut floor joints to provide support and load-bearing capacity at the joint edges. Jointfill 302 is used in floor control joints where slight movement is possible due to thermal variations. It is available in two consistencies, self-leveling and gel, for horizontal and vertical applications.

Typical Applications: Control and construction joints in industrial concrete floors; repair compound to seal and fill random cracking in floors; joints in penitentiaries where a tamper-proof and gouge-resistant sealant is required.

Limitations: Do not use outside or as an expansion/ contraction sealant. New concrete slabs must be at least 3 months old before installing Jointfill 302, according to ACI 302.

Composition: Jointfill 302 is a two-component, moisture insensitive, 100% solids epoxy joint filler and sealant.

Applicable Standards: ACI 302, Guide for Concrete Floor and Slab Construction, Section 4.10, Joint Materials.

SKU: JOINTFILL 302 Category:
Features/Benefits
  • Protects joint edges from spalling due to impact from heavy loads and steel wheel traffic.
  • Low modulus formulation accommodates floor slab movement due to thermal variations.
  • Consists of 100% solids epoxy to allow total compliance with VOC regulations.
  • Rapid cure time drastically reduces operational downtime and allows for exposure to traffic in less than 24 hours.
  • Contains no volatile solvents permitting interior application with no fire risk or toxic odors.
  • Self-leveling consistency may be used to repair random cracking in concrete floor slabs due to long-term drying shrinkage.
  • Gel consistency permits use as a gouge-resistant and tamper-proof joint sealant.
  • Long pot life formulation is available for use when temperatures are above 80 F (27 C).
Color/Appearance Jointfill 302 is available in medium gray and light reflective.
Shrinkage Nil
Hardness (ASTM D 2240) Shore D 50
Elongation 15 percentage
Mixing Ratio 1 to 1 by volume
Cure Time Overnight
Packaging & Estimating/Coverage
Packaging
Jointfill 302 is supplied in kits, each containing the proper proportion of liquid components. Standard packaging information is shown below:

Kit Size Binder Activator Shipping Wt.
1-gal. kit 1/2 gal. 1/2 gal. 11 lbs.
(3.8 liter) (1.9 liter) (1.9 liter) (5.0 Kg)
2-gal kit 1 gal. 1 gal. 22 lbs.
(7.6 liter) (3.8 liter) (3.8 liter) (10.0 Kg)

Estimating/Coverage
One gal. (3.8 liter) of Jointfill 302 will fill the following typical joints:

Joint Depth
Joint Width 3/4 in 1 in. 1-1/2 in. 2 in.
(19 mm) (25 mm) (38 mm) (51 mm)
1/8 in. 205 ft. 154 ft. 103 ft. 77 ft.
(3.2 mm) (62 m) (47 m) (31 m) (23 m)
1/4 in. 103 ft. 77 ft. 51 ft. 39 ft.
(6.4 mm) (31 m) (23 m) (16 m) (12 m)

Directions for Use
a. Preparation: Joint surfaces must be physically sound, thoroughly clean, free of oil, wax, loose paint, rust, scale and other deleterious material. Grinding, wire brushing or sandblasting may be required to expose a sound and clean bonding surface.
b. Priming: Most concrete substrates do not require a primer.

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