I have a crack in my concrete pond. If I coat the pond with this product will it hurt fish? Do you recommend for ponds?

I used it in my pond and the fish are still going strong. Great product You may want to fix the crack as best as you can prior to coating with Rubberseal. Maybe try UGL water plug in the crack.

I am looking for a product to seal my 5K gallon concrete water tank, will this stick to old concrete? Will it leach out into the water/

Yes I will seal it. No water will get out. The tank will need to be cleaned (best way pressure wash it if possible) and dry. Minimum 40 mils and let it cure out for 72 hours

Will this be flexible enough to work with a folding kayak?

It has 1500% elongation. That means it will expand 15 times the thickness you put down before it breaks. It will recover 90 to 95%. I am not sure of your application exactly, but if you want to send some pictures we could guide you on the application.

What is the coverage area per gallon

It depends on the thickness. See spread rate chart on product info. Below 40 mils is damp proofing. Above 40 mils is waterproofing. All our testing is bases on 80 mils. Each coat is around 20 mils.

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Liquid Rubber Waterproofing and Protective Coating - Roll On (5 Gallons)

Liquid Rubber Waterproofing and Protective Coating - Roll On (5 Gallons)

Product ID: 10666127

Details

Brand
Rubberseal
Item Weight
10 pounds
Item dimensions L x W x H
8 x 8 x 10
Material
Polymer
Style
Industrial

🌿Low-VOC & eco-friendly

💧True waterproof membrane

🛠️Flexible & crack-bridging

NZ$986

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Description

💧 Roll on resilience — waterproof your world with seamless strength!

ECO CONSCIOUS FORMULA - Water-based, low-odor, and low-VOC for safer application and environmental peace of mind.
FLEX RECOVER TECHNOLOGY - Stretches to bridge shrinkage and movement cracks, ensuring long-lasting protection.
SEAMLESS WATERPROOF SHIELD - Creates a continuous, water-tight membrane ideal for ponds, foundations, and planters.
SUPERIOR COVERAGE EFFICIENCY - Covers approximately 32 sq ft per gallon at 40 mils thickness—build up to 60 mils for standing water.
VERSATILE DURABLE APPLICATION - Bonds to damp concrete and masonry, resists ozone, salt spray, and weathering for industrial-grade resilience.

Rubberseal Black is a premium water-based liquid rubber coating that cures into a flexible, seamless membrane designed for continuous water exposure. Ideal for waterproofing ponds, foundations, and masonry, it offers excellent crack-bridging flexibility, low-VOC eco-friendly formulation, and robust resistance to weathering and salt spray. Easy to apply by roller or brush, it delivers about 32 sq ft coverage per gallon and is made in the USA for industrial-grade durability.

Specifications

ASIN	B00L5GHSQC
Best Sellers Rank	#569,227 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #645 in Industrial Coatings
Brand	Rubberseal
Brand Name	Rubberseal
Color	Black
Compatible Material	Rubber
Customer Reviews	3.8 out of 5 stars 15 Reviews
Item Dimensions	8 x 8 x 10 inches
Item Form	Liquid
Item Weight	10 pounds
Item dimensions L x W x H	8 x 8 x 10 inches
Manufacturer	Inflow Solutions
Material	Polymer
Material Type	Polymer
Model	FR-07
Part Number	FR-07
Style	Industrial
Style Name	Industrial
Surface Recommendation	Gutter
UPC	852920005050
Unit Count	576 Fluid Ounces
Water Resistance Level	Waterproof

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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Excellent communication throughout the order process. Product is perfect.

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NZ$986

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to New Zealand.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Received my product in pristine condition. Great service overall.

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The product quality is outstanding. Exactly what I needed for my work.

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