Rubber Liquid Waterproof Sealant, Waterproof Patch Seal Sealer, Cloud Gray Indoor & Outdoor Elasticity Rubber Paint, Multi Surface Foundation Leak Crack Repair-Roof Gutter Basement Water Proof Coating
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Availability:
Only 10 left in stock, order soon!
Arrives
Thursday, May 28
Features
- Liquid rubber coating elasticity and extensibility: Self leveling concrete crack repair sealant formula smoothly covers small gaps and cracks to ensure a watertight seal. From humid surrounding to extreme temperatures, fully cured waterproof coating forms a dense, elastic rubber coating that seals out water, gases, moisture and humidity indoors and outdoors. Rubber liquid waterproof sealant prevents substrate deformation and leakage, providing lasting waterproof protection.
- Liquid rubber coating sealant long-lasting weather resistance and easy to apply: Professional rubber sealant waterproof membrane maintain stability in high and low temperature surrounding. Liquid waterproof sealant (concrete crack filler) exhibits excellent adhesion on multiple surfaces and resists cracking. Liquid rubber sealant can be applied by plastic brush, scraper, or poured to form an elastic rubber waterproof membrane.
- Rubber liquid waterproof sealant coverage: Vertical concrete foundation surfaces: 0.6 mm thick, covers 2 m2 (21.4 ft2). Flat roofs/low-slope roofs and standing water surfaces: 1 mm thick, covers 1 m2 (10.7 ft2). Roof sealant waterproof leak repair sealant also creates a protective waterproofing layer in the immediate area. Rubber liquid waterproof sealant can also serve as a crack-filling material. Elasticity rubber paint is suitable for indoor and outdoor applications.
- Waterproof patch seal sealer versatile, reliable performance for leak repair. Rubber liquid waterproof sealant provides waterproofing, flexibility and durability for roof repair, basement, RV, camper, trailer, masonry, flat roof, metal roof, pitched roof, planter boxes, foundation, sheds, metal, wood, concrete, windows, exterior wall cracks, cement crack, chimneys, gutters, skylights, exterior wall pipes, sealing pipe leaks, corners, low-pressure small swimming pool, fountains, tiles, balconies.
- Rubber liquid waterproof sealant tips: Waterproof concrete crack filler sealant adhere easily to surfaces, repairing holes, cracks, gaps, tears, and leaks while sealing cracked surfaces. Liquid foundation sealant won't re-crack due to thermal expansion. Waterproof sealer thin/thick coating surface drying time: Roof sealant full cure at 24-48hours. Curing times for interior/exterior coatings depend on temperature, humidity, and airflow.
Material: Rubber
Brand: Hupeyna
Style: Rubber Liquid Waterproof Sealant
Item Weight: 1500 Grams
Item dimensions L x W x H: 6.69 x 6.69 x 6.3 inches
Brand Name: Hupeyna
Number of Items: 1
Part Number: HPGRAY1
Model: HPGRAY1
Manufacturer: Hangzhou Huyan Technology Co., Ltd
Included Components: 1.5KG Waterproof Coating, Polyester Fabric, Scraper, Instruction Manual
Material Type: Rubber
Water Resistance Level: Waterproof
Item Form: Liquid
Compatible Material: Ceramic, Concrete, Engineered Wood, Fiberglass, Glass, Metal, Plastic, Porcelain, Rubber, Tiles, Vinyl, Wood
Item Weight: 1500 Grams
Item Dimensions: 6.69 x 6.69 x 6.3 inches
Style Name: Rubber Liquid Waterproof Sealant
Color: Cloud Gray
Surface Recommendation: Indoor & Outdoor
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, May 28
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
I used this product to waterproof my waterfall basin. It was easy to apply; I used a kitchen vegetable brush to paint it on. It turned out looking very good shade of gray and I'm very pleased that I didn't get the product all over myself because the product comes in plastic bag and was very easy to apply 2 thin coats without runs. It helped that the morning temperature was 80 and I put a plywood cover over the basin to keep the direct sunlight off the paint.
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Reviewed in the United States on March 25, 2026 by C Meszaros
I was on the lookout for a small yet safe enough Sealant to cover my entire bathtub. This rubber liquid Sealant after the given curing time : it dries within 24-48 hours... if you've done it correctly it feels pretty solid and the mixture has a smooth, uniform finish with easy application . The cracks and openings are easily filled/sealed without any sticking. The compact size of this sealant bucket makes it easy to tuck into a medium-to-large-sized tub/shower or covering an entire RV. After testing the safety of this sealant, I noticed that I was able to slightly scratch it with only my fingernail, which raises concerns for me about how secure it will be as a long-term sealing solution. The liquid rubber itself is thick but feels easy enough for water degradation/wear over a short period, average use. It does NOT come with hardware to make application, so you'll have to buy it separately. However, the color is amazingly beautiful and very worth its pricing.
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Reviewed in the United States on April 8, 2026 by Jose Dantas
Work great
Reviewed in the United States on April 21, 2026 by Amazon Customer
I ordered this Rubber Liquid Waterproof Sealant to use on the metal roof above our deck. We were actually given this roof when our new neighbors renovated the property next door & tore down the original house. We didn’t know much about it, but it worked perfectly for what we needed- until it started raining. 😭 After installation, we quickly realized there were leaks throughout it. About a week later, I noticed this sealant available & decided to give it a try. I’m so glad I did! The application process was very easy. I applied it myself, & as far as my non-professional “expertise” goes, it truly did seem self-leveling. It spread smoothly & covered small gaps without me having to fight with it. It gave me confidence that it was sealing the problem areas properly. I also appreciate the elasticity factor. With metal roofing, expansion & temperature changes are always a concern, so having something flexible instead of rigid makes a big difference. So far, it’s performed really well. For 55 oz, I think the price compares very favorably to other similar products. Most of the alternatives I looked at had significantly less product for about the same price when you break it down by unit cost. I would love to come back in a couple of months to update on long-term durability, but at this point I’m very happy with the results & hopeful this will be a lasting fix!
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Reviewed in the United States on February 28, 2026 by Angel LaDawn
I used this along the area where the stucco meets the concrete foundation on my house. That spot kept getting washed out over time by the garden hose, and water was clearly seeping into small gaps. I was looking for something flexible rather than a rigid filler, and this turned out to be a good solution. The sealant goes on easily and levels itself out nicely. I applied it with a brush, and it flowed into the small cracks and seams without much effort. Once it cured, it formed a rubbery, flexible layer instead of drying hard, which is exactly what I wanted in an area that expands, contracts, and gets regular water exposure. After curing, it feels durable and well-bonded to both stucco and concrete. So far, it’s held up well against water, and I haven’t seen any signs of it pulling away or cracking. The flexibility seems likely to help prevent the same problem from recurring, especially with temperature changes. Drying time was reasonable. It skinned over fairly quickly, but I gave it a full day before exposing it to water just to be safe. Coverage was about what I expected, and a little went a long way for this type of repair. Overall, this worked well for a problem area that needed something waterproof but not rigid. If you’re dealing with cracks or seams where movement and moisture are both issues, this seems like a solid option that’s easy to apply and does what it claims. Overall, a good value for the price for me.
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Reviewed in the United States on January 12, 2026 by SDF1