---
product_id: 660278115
title: "UNIONSKY300g Invisible Waterproof Agent, Waterproof Insulating Sealant & Leak Repair Adhesive – Transparent, Insulating, Anti-Leak Coating"
brand: "unionsky"
price: "€ 21.78"
currency: EUR
in_stock: true
url: https://www.desertcart.pt/products/660278115-unionsky300g-invisible-waterproof-agent-waterproof-insulating-sealant-and-leak-repair
store_origin: PT
region: Portugal
---

# 300g capacity Heat-resistant Quick-drying UNIONSKY300g Invisible Waterproof Agent, Waterproof Insulating Sealant & Leak Repair Adhesive – Transparent, Insulating, Anti-Leak Coating

**Brand:** unionsky
**Price:** € 21.78
**Availability:** ✅ In Stock

## Summary

> 💪 Seal it, don’t leak it! Your ultimate waterproofing solution.

## Quick Answers

- **What is this?** UNIONSKY300g Invisible Waterproof Agent, Waterproof Insulating Sealant & Leak Repair Adhesive – Transparent, Insulating, Anti-Leak Coating by unionsky
- **How much does it cost?** € 21.78 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/660278115-unionsky300g-invisible-waterproof-agent-waterproof-insulating-sealant-and-leak-repair)

## Best For

- unionsky enthusiasts

## Why This Product

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

## Key Features

- • **Seal the Deal:** Advanced waterproofing formula penetrates and protects.
- • **Time is Money:** Quick-drying for fast application and long-lasting results.
- • **Weather Warrior:** Withstands extreme temperatures without sagging or cracking.
- • **Economical Choice:** Long-term leak prevention saves you time and money.
- • **Versatile Protector:** Ideal for a variety of surfaces and applications.

## Overview

The UNIONSKY 300g Invisible Waterproof Agent is a cutting-edge sealant designed to provide a transparent, durable, and heat-resistant waterproof coating. Its advanced formula effectively seals joints, cracks, and leaks, ensuring comprehensive protection for various surfaces, including roofs, walls, and more. Quick-drying and versatile, this sealant is perfect for both professional and DIY applications, making it an economical choice for long-term leak prevention.

## Description

UNIONSKY300g Invisible Waterproof Agent, Waterproof Insulating Sealant & Leak Repair Adhesive – Transparent, Insulating, Anti-Leak Coating

## Features

- Transparent Waterproof Sealant: Advanced leak prevention formula is water- and rubber-based, designed to penetrate joints, cracks, and leaks, effectively sealing any damaged surfaces. It forms a waterproof and protective coating around the treated area for comprehensive protection.
- Durable Waterproofing Solution: Featuring quick-drying ingredients, this waterproof sealant ensures easy application and long-lasting results. A durable waterproof layer forms within 24-48 hours and strengthens over time for maximum protection.
- Heat-Resistant Performance: Designed to withstand extreme conditions, this anti-leakage agent won’t sag or drip in the summer heat, nor will it crack or flake in the cold winter.
- Economical Leak Prevention: Save time, money, and energy with this reliable sealant. It offers long-term protection for cracks, window sills, toilets, walls, and external pipelines, sealing leaks efficiently.
- Versatile Usage: Perfect for use on flat or sloped roofs, exterior walls, foundations, sheds, basements, metal, wood, concrete, gutters, skylights, chimneys, PVC joints, windows, RVs, swimming pools, bathrooms, and more.

## Product Details

- **Material:** Rubber
- **Brand:** UNIONSKY
- **Style:** 300g
- **Compatible material:** Rubber
- **Water resistance level:** Waterproof

## Images

![UNIONSKY300g Invisible Waterproof Agent, Waterproof Insulating Sealant & Leak Repair Adhesive – Transparent, Insulating, Anti-Leak Coating - Image 1](https://m.media-amazon.com/images/I/61vCy--ZqGL.jpg)
![UNIONSKY300g Invisible Waterproof Agent, Waterproof Insulating Sealant & Leak Repair Adhesive – Transparent, Insulating, Anti-Leak Coating - Image 2](https://m.media-amazon.com/images/I/71bI5fRl+UL.jpg)
![UNIONSKY300g Invisible Waterproof Agent, Waterproof Insulating Sealant & Leak Repair Adhesive – Transparent, Insulating, Anti-Leak Coating - Image 3](https://m.media-amazon.com/images/I/815p8I+uNIL.jpg)
![UNIONSKY300g Invisible Waterproof Agent, Waterproof Insulating Sealant & Leak Repair Adhesive – Transparent, Insulating, Anti-Leak Coating - Image 4](https://m.media-amazon.com/images/I/71n6cMZesZL.jpg)
![UNIONSKY300g Invisible Waterproof Agent, Waterproof Insulating Sealant & Leak Repair Adhesive – Transparent, Insulating, Anti-Leak Coating - Image 5](https://m.media-amazon.com/images/I/81BkZvcgBIL.jpg)

## Available Options

This product comes in different **Style** options.

## Frequently Bought Together

- UNIONSKY 300g Invisible Waterproof Agent, Waterproof Insulating Sealant & Leak Repair Adhesive – Transparent, Insulating, Anti-Leak Coating
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**Shop now:** [https://www.desertcart.pt/products/660278115-unionsky300g-invisible-waterproof-agent-waterproof-insulating-sealant-and-leak-repair](https://www.desertcart.pt/products/660278115-unionsky300g-invisible-waterproof-agent-waterproof-insulating-sealant-and-leak-repair)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-01-23*