Quikrete Vinyl Concrete Patch 40 lb

Worth it for contractors handling thin repair work that standard concrete can’t touch. The polymer-modified formula achieves 5,000 PSI strength at 28 days while feathering down to 1/16 inch — solving the industry’s thin-repair challenge. At 34 sq. ft. coverage per 40 lb bag at 1/8 inch thickness, you can calculate job costs accurately.

Skip it if you’re pouring a slab or doing structural work. This patch shines for cosmetic and thin-layer repairs where standard masonry mixes would crack or fail to bond.

The Feather-Edge Advantage

Traditional concrete requires a 2-inch minimum thickness. Try going thinner and you’ll get cracking, poor adhesion, and callbacks. Vinyl Concrete Patch changes that equation — it bonds reliably down to 1/16 inch feather-edge. That’s the difference between grinding out a spalled area to create depth versus simply cleaning and patching.

The thin application works because of careful technique. Mix only what you can apply within 20-30 minutes. Apply with a trowel, pressing firmly into the repair area to eliminate voids. For thin repairs, trowel to that feather edge of 1/16 inch. Deep vertical repairs need a different approach — apply in 1/4 inch layers, allowing 2 hours drying time between layers.

Montana’s freeze-thaw cycles murder poorly bonded patches. Surface prep determines success: remove all unsound, loose, or crumbling concrete using a wire brush or trowel. Roughen smooth surfaces to ensure a mechanical bond. Clean the area with a concrete cleaner (e.g., QUIKRETE #8601) and rinse thoroughly. Ensure the surface is structurally sound and free of paint or existing coatings.

Polymer Performance Without the Mixing Hassle

Standard cement patches often require a separate liquid acrylic bonding agent; this product is polymer-modified and only requires water for superior adhesion. That’s one less product to stock, one less step in the process, and no chance of improper bonding agent application.

Specification	Value
7-day strength	3,000 PSI (20.6 MPa)
28-day strength	5,000 PSI (34.4 MPa)
Test method	ASTM C109
Minimum thickness	Feather-edge (1/16 inch)
Maximum per layer	1/4 inch

The self-curing properties eliminate the need for wet curing. In Montana’s low humidity, that matters. No plastic sheeting, no misting, no callbacks because someone forgot to keep it damp.

Reviews across major retailers average 4.6 stars from 1,701 total reviews. Contractors praise the excellent adhesion, ease of mixing (just add water), and the ability to achieve a very fine feather-edge finish. Highly effective for non-structural cosmetic repairs.

Coverage Math for Job Estimating

Coverage runs approximately 34 sq. ft. per 40 lb bag at 1/8 inch thickness. Mix ratio stays consistent: approximately 80 fl. oz. (2.36 L) of water per 40 lb bag (10 fl. oz. per 5 lb of product).

Mixing requires a clean container and potable water. Add approximately 80 fl. oz. of water per 40 lb bag (scale accordingly for smaller amounts). Mix to a smooth, creamy paste consistency.

The coverage economics work out well for typical driveway spalling or sidewalk edge repairs. A single bag handles most residential cosmetic repairs. For larger commercial jobs, the consistent mix ratio makes material calculations straightforward.

ASTM compliance includes C387 (Standard Specification for Packaged, Dry, Combined Materials for Concrete) and C109 (Standard Test Method for Compressive Strength of Hydraulic Cement Mortars). California Proposition 65 Warning applies (contains chemicals known to cause cancer/birth defects).

Limited warranty provided by The Quikrete Companies, LLC. Details available at quikrete.com/product-warranty or by written request.

FAQ

Can this be used for structural repairs? No. This product is ideal for cosmetic and thin-layer repairs where standard masonry mixes would crack or fail to bond. Do not use for structural load-bearing slab replacement.

How thin can this patch really go? The minimum thickness is feather-edge at 1/16 inch. Typical thin repairs run 1/8 inch. This thin application capability sets it apart from standard concrete requiring 2-inch minimums.

Does this require a bonding agent? No. Standard cement patches often require a separate liquid acrylic bonding agent; this product is polymer-modified and only requires water for superior adhesion.

What surfaces can be repaired? Applications include cracked or chipped concrete floors, sidewalks, driveways, curbs, concrete steps and stairways, spalled or pitted concrete horizontal surfaces, garage slabs and patio slabs, and horizontal and vertical masonry repairs where thin patching is needed. The product works on concrete, masonry, and stone substrates for interior, exterior, horizontal, and vertical (layered) surfaces.

What’s the actual coverage per bag? Approximately 34 sq. ft. per 40 lb bag at 1/8 inch thickness. Thinner applications cover more area, thicker applications less.