Dayton J40 Acrylic Bonding Agent 5 Gal

A ready to use, non-reemulsifiable acrylic admixture and bonding agent designed to improve the adhesion and durability of concrete, masonry, stucco, terrazzo and portland cement-sand mixes to horizontal and vertical concrete and other surfaces.

VOC Compliant
Excellent Bonding Strength
Improves Freeze Thaw Resistance

$170.33

SKU

14807

Dayton J40 Acrylic Bonding Agent – 5 Gallon Pail

Dayton J40 Acrylic Bonding Agent is a ready-to-use, non-reemulsifiable acrylic admixture and bonding agent that enhances adhesion and durability in concrete, masonry, stucco, and cement-based mixes. Whether applied to vertical or horizontal surfaces, J40 improves performance by increasing moisture resistance, bond strength, and freeze/thaw durability. It’s ideal for use as both a bonding primer and an admixture in applications that require long-lasting performance indoors or out.

Key Features:

Improves adhesion and durability in cementitious materials
Non-reemulsifiable formula for long-term bond performance
Enhances freeze/thaw resistance in patches, mortars, and coatings
V.O.C. compliant – 14 g/L
Interior and exterior use
Can be used as a bonding agent or admixture
Meets ASTM C1059 Type 2 and ASTM C1042 standards

Technical Specifications:

Property	Value
Bond Strength (14 Days)	1,865 psi (12.9 MPa)
Bond Strength (28 Days)	2,436 psi (16.8 MPa)
VOC Content	14 g/L
ASTM Compliance	ASTM C1059 Type 2, ASTM C1042 Type 2
Surface Coverage	200–300 sq. ft./gal
Shelf Life	18 months in unopened container

Frequently Asked Questions:

Can J40 be used as a standalone waterproofing product?
No. J40 is not designed as a waterproofing agent. It enhances adhesion and performance but should not be used where hydrostatic pressure is present.

Does J40 need to dry before applying mortar or concrete?
No. The cementitious product should be applied while J40 is still wet for best adhesion performance.

How is it used as an admixture?
Dilute J40 with 1 to 3 parts water, then blend with cementitious materials as directed by the manufacturer. Follow mix design guidelines for the specific mortar or topping.

Is this product suitable for both vertical and horizontal applications?
Yes, J40 is effective on both horizontal slabs and vertical surfaces.

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