UINIHIDI Concrete Crack Filler, 4 x 500g

UINIHIDI Concrete Crack Filler is a four-pack of grey sealant for concrete crack repairs. The listing describes it as self-levelling and flexible, with claimed waterproofing and a 24-hour initial hardening time followed by a 48-hour full cure. Those timings are useful for planning, but do not indicate when a repaired surface can be used under particular conditions.

At a glance

Self-levelling formula is claimed to flow into cracks for a flush finish.
The listing describes the filler as flexible and suitable for concrete, cement, brick and stone.
Claimed uses include driveways, patios, walkways, pool decks, garages and floors, indoors or outdoors.
The listing says no mixing is required.

Price

£23.97Save 40%

Reference price: ~~£39.99~~

Price checked: 14 Nov 2026

View offer Ahead of Black FridayExplore the selection

Pros and cons

Pros

Four 500g units provide a stated total of 2000g for multiple repairs or a larger project.
A stated 24-hour initial hardening time and 48-hour full cure time help with project scheduling.
The claimed self-levelling application may suit horizontal cracks where a flush finish is wanted.

Technical specifications

7 specifications

Identity and quantity
Brand	UINIHIDI
Number of items	4
Colour	grey

Application and protection
Recommended surface	Concrete
Water resistance listed	Waterproof
Initial hardening time	24 Hours
Full cure time	48 Hours

What to know before buying

Listing details to confirm

The listing claims use on concrete, cement, brick, stone, asphalt and mortar, while its specific surface recommendation names concrete. Confirm suitability for the actual repair surface and follow the product instructions for application and reopening the area.

What’s in the box

Included

Concrete crack filler, 4-pack (500g x 4)

Who is it for?

A good fit for

DIY users repairing small cracks in concrete patios, driveways, walkways or garage floors.
Buyers who prefer a ready-to-use, self-levelling filler supplied in four units.

Less suited to

Repairs where suitability for a surface other than concrete must be established before purchase.
Projects that require a guaranteed reopening time or independently verified weather and temperature performance.

UINIHIDI Concrete Crack Filler, 4 x 500g · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 61 ratings

5 stars80%80%
4 stars8%8%
3 stars6%6%
2 stars6%6%
1 star0%0%

Customer feedback describes the filler as effective on small patio and driveway cracks, easy to apply, quick to set, and of good perceived quality and durability. This is relevant for small DIY repairs, though customer impressions do not establish performance on every surface or confirm a specific reopening time. Aggregate ratings are mostly in the five-star category, but include some lower ratings, so experiences are not uniform.

Positive themes

Customers describe it as effective for small patio and driveway cracks.
Feedback mentions ease of application, quick setting, quality and durability.

Frequently asked questions

How many units are included?

The listing states four units and identifies the pack as 500g x 4, with a listed unit count of 2000.0 gram.

How long does it take to cure?

The listed initial hardening time is 24 Hours and the full cure time is 48 Hours. The listing does not specify when a treated area can be used in particular conditions.

Which surfaces is it intended for?

Concrete is the stated surface recommendation. The listing also claims compatibility with cement, brick, stone, asphalt and mortar, so confirm the product instructions for your repair surface.

Is it suitable for outdoor repairs?

The listing claims indoor and outdoor use and describes the filler as waterproof and all-weather. These are product claims rather than independently verified performance.