NGBNGB NGBC70 Concrete Crack Filler, 3 lb Gray Powder Mortar Kit

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Product guide

NGBNGB NGBC70 Concrete Crack Filler, 3 lb Gray Powder Mortar Kit

Filler: NGBNGB NGBC70 is a gray, dry powder mortar kit listed for concrete crack and hole repairs indoors or outdoors. It is mixed with water before application, so buyers should allow time for surface preparation, working the mortar, and curing.

At a glance

Dry cement and quartz-sand mortar is mixed with water for patching cracks, holes, chips and damaged corners.
The listing describes use on driveways, sidewalks, patios, steps, garage floors and walls, indoors or outdoors.
Mixing directions specify 13–15 g of water per 100 g of powder by weight.
The stated application guidance is to smooth the mortar within 20–30 minutes and allow 24–48 hours to fully cure.

Price

$22.94Save 18%

Reference price: ~~$27.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

Powder form lets users mix the repair mortar with water as needed, following the listed weight ratio.
Scraper, brush and a pair of gloves are named in the included-components list.
The stated repair scope includes both localized holes or chips and worn concrete surfaces.

Cons

Requires measuring and mixing powder with water, rather than applying a ready-to-use filler.

Technical specifications

13 specifications

Identity and quantity
Brand	NGBNGB
Model	NGBC70
Weight listed	3 pounds
Color	Gray
Form	Powder
Material type	High strength Concrete, Quartz sand, Water-retaining agent

Use and protection
Surface recommendations	Walls, Tile, Pipe, Counter Top, Window, Door, Sink, Tub, Gutter
Water resistance listed	Water Resistant
Manufacturer-described repair areas	driveways, sidewalks, patios, steps, garage floors and walls

Mixing and cure
Mixing ratio by weight	100:13–15
Smoothing window	20–30 minutes
Initial hardening time	2 hours
Full cure time	48 hours

What to know before buying

The listing gives a full cure time of 48 hours in its details but describes full curing as 24–48 hours in the application directions. It also describes weather resistance and freeze-thaw exposure without providing specific application or temperature limits, so confirm suitability for the repair conditions.

What’s in the box

Included

1x Scraper
1x Brush
1x Pair of Gloves

Who is it for?

A good fit for

DIY repairs to concrete cracks, holes, chips or damaged corners where a mix-before-use mortar is suitable.
Patching concrete around driveways, sidewalks, patios, steps, garage floors and walls, as described by the listing.

Less suited to

Buyers needing an immediately usable, pre-mixed filler or a repair material with a clearly stated narrow-crack application limit.

NGBNGB NGBC70 Concrete Crack Filler, 3 lb Gray Powder Mortar Kit · 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 about durability and value. Some feedback describes successful cement repairs, while another customer found the filler insufficient for small cracks. This matters because the listing describes a mortar for suitable cracks and holes but does not specify a minimum crack size. Some customers also consider it overpriced, while others disagree. The overall rating distribution leans positive but includes a notable lower-star share, so it does not resolve these use-case and value differences.

Mixed feedback

Customer feedback is mixed on durability, including a report of good repair results and a report that it was insufficient for small cracks.
Customer feedback is mixed on value, with some customers considering the product overpriced.

Frequently asked questions

How do you mix the NGBC70 powder?

The listing specifies a 100:13–15 ratio by weight, meaning 13–15 g of water for every 100 g of powder. Mix thoroughly to a workable mortar consistency.

How long does the repair take to cure?

The details list 2 hours for initial hardening and 48 hours for full cure. Application directions say to smooth within 20–30 minutes and allow 24–48 hours to fully cure, so the stated full-cure timing is inconsistent.

What repairs is this mortar described for?

The listing describes filling suitable cracks and holes, rebuilding chipped or broken corners, and repairing worn concrete on driveways, sidewalks, patios, steps, garage floors and walls.

What comes with the kit?

The included-components list names one scraper, one brush and one pair of gloves. The feature text also says the kit includes repair powder.