Hupeyna HPFSJ5000CA Transparent Waterproof Sealant, 5 L

Sealant: Hupeyna HPFSJ5000CA is a 5 L transparent liquid acrylic coating described for waterproofing and leak repair indoors and outdoors. The listing says it can be brushed, rolled, wiped or poured, with about 70 sq. ft (6 sq m) coverage when applied in 3-4 thick layers.

At a glance

Manufacturer claims about 70 sq. ft (6 sq m) coverage per 5 kg when applied in 3-4 thick layers.
The water-based coating is described for sealing cracks, gaps and leaks on a range of indoor and outdoor surfaces.
The listing recommends application at 10˚C/50˚F or higher, including overnight temperatures.

Price

$76.99Save 15%

Reference price: ~~$90.99~~

Price checked: Nov 13, 2026

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Pros and cons

Pros

Transparent finish is intended to preserve the appearance of the coated surface.
The product can be applied by brush, roller, wiping or pouring, according to the listing.
The stated compatible materials include acrylic, stone and wood.

Technical specifications

12 specifications

Identity and quantity
Brand	Hupeyna
Model	HPFSJ5000CA
Style / capacity	5L / 1.32GAL
Item form	Liquid
Colour	Transparent
Number of packs	1

Dimensions and installation
Weight listed	5000 g
Parcel dimensions and weight	24.8 x 24.4 x 17.2 cm; 5 kg
Application surface recommendation	Indoor and Outdoor

Materials and protection
Water resistance listed	Waterproof
Material listed	Liquid acrylic coating
Compatible materials	Acrylic, Stone, Wood

What to know before buying

The listing advises using the coating only at 10˚C/50˚F or higher, including overnight, and says wet or falling-temperature conditions can extend curing. It describes film formation within 24 hours for thin areas and full curing in 48-72 hours for thicker areas. Avoid applying before rain and allow full curing before painting or applying other products.
The listing says not to mix or dilute the coating and advises against contact with solvents, solvent-based cleaners, adhesives and paints. It also says dirty or very smooth surfaces may impair adhesion and that water exposure before full cure can leave areas looking white or milky.

What’s in the box

Included

5 L transparent waterproof sealant, quantity 1

Who is it for?

A good fit for

DIY users sealing small cracks, gaps or leaks on listed roof, wall, window, concrete, wood, stone, tile or pipe-joint surfaces.
Buyers seeking a transparent coating for indoor or outdoor repairs who can apply several layers and allow the stated cure time.

Less suited to

Projects that need coverage beyond the stated approximately 70 sq. ft (6 sq m) per 5 kg without calculating additional product needs.
Applications that must proceed in wet or cold conditions below the stated 10˚C/50˚F minimum.

Hupeyna HPFSJ5000CA Transparent Waterproof Sealant, 5 L · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 19 ratings

5 stars88%88%
4 stars0%0%
3 stars0%0%
2 stars0%0%
1 star12%12%

Aggregate ratings lean strongly towards five stars, but a smaller share are one-star, so the overall score does not establish consistent results. With no written customer feedback supplied, there is no evidence to identify specific praised features or explain the negative ratings. For a project, the manufacturer's coverage, surface-preparation and curing guidance are more useful planning details than the rating alone.

Frequently asked questions

How much area does one container cover?

The listing estimates about 70 sq. ft (6 sq m) per 5 kg when applied in 3-4 thick layers. Actual coverage may depend on the surface and application.

What temperature and weather does the listing recommend?

It recommends applying at 10˚C/50˚F or higher, including overnight temperatures, and says wet weather or falling temperatures can lengthen curing. It advises choosing relatively dry, sunny conditions.

Can I dilute or mix this coating with other products?

No. The listing says it is ready to use, should not be diluted or mixed with other coatings, and should avoid contact with solvents, solvent-based cleaners, adhesives and paints.

When can a coated area be painted?

The listing says to wait until the sealant is fully cured before painting or applying other products. It describes 24 hours for a film to form in thin areas and 48-72 hours for thicker areas to cure fully.