NGBNGB NGBC70 Concrete Crack Repair Mortar, 10 lb Gray

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Product guide

NGBNGB NGBC70 Concrete Crack Repair Mortar, 10 lb Gray

Gray: NGBNGB NGBC70 is a dry powdered concrete repair mortar presented for filling cracks, holes, chips, and damaged corners. Its stated mix ratio and cure window make this a hands-on patching product rather than a ready-to-use liquid filler.

At a glance

Powdered mortar with quartz sand, mixed with water before application.
Described for concrete cracks, holes, chips, damaged corners, and worn surfaces.
The listing gives a 100:13–15 powder-to-water ratio by weight and a 24–48 hour full cure time.

Price

$67.14Save 16%

Reference price: ~~$79.99~~

Price checked: Nov 14, 2026

View offer Ahead of Black FridayExplore the selection

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Pros and cons

Pros

The stated uses cover several common concrete patching tasks, including holes, chipped corners, and worn surfaces.
A specified water-to-powder ratio and smoothing window provide concrete guidance for mixing and application.
The listed kit contents include a scraper, brush, and protective gloves.

Cons

Requires measuring and mixing powder with water, unlike a ready-to-use filler.

Technical specifications

13 specifications

Identity
Brand	NGBNGB
Model	NGBC70
Color	Gray
Form	Powder
Style	Industrial

Dimensions and installation
Dimensions listed	3 x 3 x 11 inches
Weight listed	10 pounds
Mixing ratio by weight	Mix powder and water at a 100:13–15 ratio by weight—add 13–15 g of water for every 100 g of powder, or about 2.1–2.4 oz per 1 lb.
Working and cure times	Smooth within 20–30 minutes and allow 24–48 hours to fully cure

Materials and protection
Material listed	High strength Concrete, Quartz sand, Water-retaining agent
Water resistance listed	Water Resistant
Compatible material	Concrete

Use
Stated application	Fill suitable cracks and holes, rebuild chipped or broken wall corners, repair damaged or worn floors, and renew existing concrete surfaces on driveways, sidewalks, patios, steps, garage floors and walls

What to know before buying

The listed 24–48 hour cure period is separate from the 20–30 minute window for smoothing. The product page describes weather resistance and rain and freeze-thaw exposure, but does not provide a quantified service-life or traffic-readiness interval.

What’s in the box

Included

Scraper
Brush
Pair of gloves

Who is it for?

A good fit for

DIY repairs to concrete cracks, holes, chips, and damaged corners where mixing a mortar is acceptable.
Buyers repairing indoor or outdoor concrete surfaces such as driveways, sidewalks, patios, steps, garage floors, or walls.

Less suited to

Buyers seeking a ready-to-apply liquid or caulk-style filler.
Buyers needing a stated repair interval for small cracks, or a quantified time before foot or vehicle traffic.

NGBNGB NGBC70 Concrete Crack Repair Mortar, 10 lb Gray · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.1 / 5 · 71 ratings

5 stars66%66%
4 stars10%10%
3 stars8%8%
2 stars3%3%
1 star13%13%

Customer feedback is mixed on both durability and value. Reports include a positive repair outcome as well as a concern that it was not sufficient for small cracks, while some buyers considered it overpriced. For buyers choosing this powder mortar, crack suitability and the amount of mixing and patching work matter alongside its listed 10-pound quantity and stated applications.

Positive themes

A customer report described excellent cement repair results.

Negative themes

A customer report said it was not sufficient for small cracks.
Some customers considered it overpriced.

Mixed feedback

Customer opinions differ on durability and value for money.

Frequently asked questions

How is this mortar mixed?

The listing specifies 100:13–15 by weight, or 13–15 g of water per 100 g of powder. It also gives an approximate measure of 2.1–2.4 oz of water per pound of powder.

How long does application and curing take?

The listing says to smooth the mortar within 20–30 minutes and allow 24–48 hours for full curing. It does not specify a separate traffic-readiness time.

What repair jobs is it described for?

The stated applications include concrete cracks and holes, chipped or broken corners, and worn or damaged surfaces on driveways, sidewalks, patios, steps, garage floors, and walls.