---
product_id: 9830665
title: "Waterfall Foam Sealant"
brand: "totalpond"
price: "392 kr"
currency: DKK
in_stock: true
reviews_count: 13
category: "Total Pond"
url: https://www.desertcart.dk/products/9830665-waterfall-foam-sealant
store_origin: DK
region: Denmark
---

# Waterproof & moisture-cured 5 min tack-free dry time Expands 2-3x for gap filling Waterfall Foam Sealant

**Brand:** totalpond
**Price:** 392 kr
**Availability:** ✅ In Stock

## Summary

> 🌊 Seal the flow, own the glow — your waterfall’s secret weapon!

## Quick Answers

- **What is this?** Waterfall Foam Sealant by totalpond
- **How much does it cost?** 392 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/9830665-waterfall-foam-sealant)

## Best For

- totalpond enthusiasts

## Why This Product

- Trusted totalpond brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Expands to Fill Gaps:** Fills cracks up to an inch wide by expanding 2-3 times its original size for a seamless finish.
- • **Precision Application:** Includes a nozzle tip applicator for controlled, mess-free foam placement every time.
- • **Rapid Tack-Free Drying:** Get to work fast with a 5-minute surface dry time that keeps your project moving.
- • **Superior Waterproof Seal:** Ensure lasting durability with a moisture-cured formula that stands up to pond and waterfall environments.
- • **Universal Surface Adhesion:** Bonds securely to most surfaces—rocks, wood, and more—excluding only a few specialty materials.

## Overview

TotalPond Waterfall Foam Sealant is a black, single-component polyurethane foam designed for waterfall construction and pond projects. It expands 2-3 times to fill gaps, adheres to most surfaces, dries tack-free in 5 minutes, and fully cures within 24 hours. Waterproof and moisture-cured, it ensures durable, professional-grade sealing for water features.

## Description

TotalPond's Waterfall Foam Sealant is a one-component, polyurethane foam, moisture-cured mixture used to fill, seal, and bond rocks for waterfall construction. It expands 2 to 3 times the extruded bead and adheres to many surfaces.

Review: Works great, but wear gloves! - Fantastic item, not my first time using it. I've used it for wall filling in my pond. This time I used it for my aquarium for a backdrop. It's sticky coming out so absolutely wear gloves, it initially expands a small amount, but let it sit over night and it will get to about double the size of initial expansion. Great for filling cracks nearly an inch wide in my pond wall. Dries to be a sort of light grey.
Review: Works for fake rock background. - This Black colored expanding foam is just what I was looking for. I used 5 cans to create a background for my paludarium. Sprayed over chicken wire structures. See pictures. Actual color is gray but the product does exactly what it should. I warmed the cans up before shaking really good. Spray upside down.

## Features

- Waterfall Foam Sealant is a single-component polyurethane black foam that fills gaps and ensures efficient water flow over rocks.
- The foam adheres to most surfaces except: teflon, silicone, polyethylene, and other similar materials.
- Waterfall Foam Sealant takes approximately 5 minutes for the outer shell to dry tack-free; Compound fully cures in 12 to 24 hours.
- The 12 oz. can includes a nozzle tip applicator.
- Before using this product, make sure all surfaces the sealant will be applied to are completely dry; allow the product at least 48 hour to dry before getting it wet.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004DL0XJU |
| Best Sellers Rank | #4,537 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #3 in Water Garden & Pond Décor |
| Brand | TotalPond |
| Color | Black |
| Date First Available | November 22, 2010 |
| Global Trade Identification Number | 00871980305467 |
| Is Discontinued By Manufacturer | No |
| Item Form | Foam |
| Item Weight | 14.4 ounces |
| Item dimensions L x W x H | 2.75 x 2.75 x 8.13 inches |
| Item model number | 871980305467 |
| Manufacturer | Geo Global Partners |
| Material | Polyurethane Foam |
| Number of Items | 1 |
| Product Dimensions | 2.75 x 2.75 x 8.13 inches |
| Style | Foam Sealer |
| UPC | 871980305467 |
| Unit Count | 1 Count |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** TotalPond
- **Item Weight:** 14.4 ounces
- **Item dimensions L x W x H:** 2.75 x 2.75 x 8.13 inches
- **Material:** Polyurethane Foam
- **Style:** Foam Sealer

## Images

![Waterfall Foam Sealant - Image 1](https://m.media-amazon.com/images/I/61mVzLYSwrL.jpg)

## Questions & Answers

**Q: Can a small waterfall be made by applying only this to a precrafted frame, made of something like styrofoam?**
A: I don’t think so..I tried this on my fountain & it still leaked..

**Q: Is this product safe for ponds with fish?**
A: I used this product to seal a leak around my waterfall.  I shut off the pump until the product was completely dry.  It sealed the leak and my fish are perfectly fine.

**Q: Is this black?**
A: Yes it is black.

**Q: Will this bond to plastic?**
A: Yes it will bond to plastics and rubbers

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great, but wear gloves!
*by B***Z on August 13, 2025*

Fantastic item, not my first time using it. I've used it for wall filling in my pond. This time I used it for my aquarium for a backdrop. It's sticky coming out so absolutely wear gloves, it initially expands a small amount, but let it sit over night and it will get to about double the size of initial expansion. Great for filling cracks nearly an inch wide in my pond wall. Dries to be a sort of light grey.

### ⭐⭐⭐⭐⭐ Works for fake rock background.
*by A***O on October 31, 2025*

This Black colored expanding foam is just what I was looking for. I used 5 cans to create a background for my paludarium. Sprayed over chicken wire structures. See pictures. Actual color is gray but the product does exactly what it should. I warmed the cans up before shaking really good. Spray upside down.

### ⭐⭐⭐⭐⭐ Use very little at a time!!! Expands a bunch!!!
*by A***S on July 20, 2025*

I haven't tried it with water yet, so not exactly sure if it holds well until I finish the entire pond. I did make the mistake of spraying way too much so it expands very well, I'm going to have to fix that. I got some on my hand and it's very hard to get off so be sure to wear gloves! I could have covered more area of I didn't waste most the can spraying too much! It's messy, so take your time, the size of the cans were larger then expected about your normal spray paint can size but a little more in depth, it's very easy to use just be careful with your straw getting too much on the end because it's sticky and spreads like tar if you make that mistake like I did. I will be ordering more. Let's just hope this works and helps my leak as well as keep unwanted over flow of outside water out when it rains around the pond..I have a big mess to clean once it's settled and half of it I wasted as it's still expanding ten minutes later 😭😭 learning experience

## Frequently Bought Together

- TotalPond Waterfall Foam Sealant
- Aquascape Black Silicone Sealant – Safe for Fish, Waterproof, Flexible, and Durable Adhesive for Ponds, Water Features, and Aquariums, 10.1 ounces, 29186

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-20*