---
product_id: 42016620
title: "GC55103 4500 Roof Bonding Sealant, 10 Ounce Cartridge, Black"
brand: "geocel"
price: "€ 16.21"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.ie/products/42016620-gc55103-4500-roof-bonding-sealant-10-ounce-cartridge-black
store_origin: IE
region: Ireland
---

# Quick drying, ponding water resistant Waterproof & cures underwater 200 PSI tensile strength, durable bond GC55103 4500 Roof Bonding Sealant, 10 Ounce Cartridge, Black

**Brand:** geocel
**Price:** € 16.21
**Availability:** ✅ In Stock

## Summary

> 🏆 Seal it once, seal it right — the pro’s choice for roof bonding!

## Quick Answers

- **What is this?** GC55103 4500 Roof Bonding Sealant, 10 Ounce Cartridge, Black by geocel
- **How much does it cost?** € 16.21 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/42016620-gc55103-4500-roof-bonding-sealant-10-ounce-cartridge-black)

## Best For

- geocel enthusiasts

## Why This Product

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

## Key Features

- • **Rapid Dry Technology:** Quickly withstands ponding water to keep your roof safe
- • **No Extra Adhesives Needed:** One-component formula simplifies your roofing projects
- • **Trusted Professional Grade:** Geocel’s proven quality since 1974 ensures lasting performance
- • **Ultimate Waterproof Bonding:** Seals and cures underwater for unbeatable protection
- • **Versatile Surface Compatibility:** Works flawlessly on asphalt, metal, concrete, EPDM, and more

## Overview

The GEOCEL GC55103 4500 Roof Bonding Sealant is a premium, black, one-component poly sealant designed for roofing applications. It offers waterproof bonding that cures underwater, rapid drying to resist ponding water, and a tensile strength of 200 PSI. Compatible with a wide range of roofing materials including asphalt shingles, metal, concrete, and EPDM, this 10-ounce cartridge delivers professional-grade durability without the need for additional adhesives.

## Description

GEOCEL GC55103 4500 Roof Bonding Sealant, 10 Ounce Cartridge, Black

## Features

- POLY SEALANT – Geocel 4500 Roof Bonding Sealant is a premium Scypolymer one-component, proprietary bonding sealant specifically designed for roofing applications and systems. It applies, adheres, and cures underwater.
- QUICK DRYING – The advanced technology of this bonding sealer results in a product that quickly withstands ponding water while bonding to many common roofing substrates.
- IDEAL FOR – This durable sealant is ideal for use on asphalt shingles, steel, concrete, EPDM, primed TPO, primed PVC, Hypalon (black only), metal, wood, and other common building substrates.
- EASY TO USE – No additional adhesives or sealants are needed when you use this flexible sealant. It has a non-flammable formulation and works with EPDM membranes, tapes, and patches. It can also be used as a night seal and for core/test cuts.
- GEOCEL – Founded in 1974, the Geocel brand provides innovative, specially designed sealants. Quality is a key ingredient in every Geocel product and service offered, which is why professionals have come to trust and depend on Geocel products.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Black |
| Brand | Geocel |
| Item Weight | 10.1 Ounces |
| Liquid Volume | 10.1 Fluid Ounces |
| Item Form | Liquid |
| Surface Recommendation | Roof |
| Tensile Strength | 200 Pounds Per Square Inch |
| Water Resistance Level | Waterproof |
| Number of Items | 1 |
| Manufacturer | Geocel |
| UPC | 079239551034 |
| Global Trade Identification Number | 00079239551034 |
| Unit Count | 1.0 Count |
| Material | Blend |
| Part Number | GC55103 |
| Item Weight | 10.1 ounces |
| Product Dimensions | 2 x 2 x 11.38 inches |
| Item model number | GC55103 |
| Is Discontinued By Manufacturer | No |
| Size | One Size |
| Style | Compact |
| Finish | Brushed |
| Pattern | Solid |
| Shape | Rectangular |
| Thickness | 3 Inches |
| Power Source | Ac |
| Item Package Quantity | 1 |
| Included Components | Geocel 4500 Roof Bonding Sealant, Black, 10.3 fl. oz. |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | Satisfaction Guaranteed |

## Product Details

- **Color:** Black
- **Brand:** Geocel
- **Item Weight:** 10.1 Ounces
- **Liquid Volume:** 10.1 Fluid Ounces
- **Item Form:** Liquid

## Images

![GC55103 4500 Roof Bonding Sealant, 10 Ounce Cartridge, Black - Image 1](https://m.media-amazon.com/images/I/510-+wwu2iL.jpg)

## Available Options

This product comes in different **Number of Items** options.

## Questions & Answers

**Q: Why does the front of the bottle say it bonds to epdm, but under limitations its says it is not for use with white or black epdm?**
A: Please read the label more carefully: no black sealant on white EPDM, no white sealant on black. In other words, use black sealant only on black material, white only on white.

**Q: Want to use under a white epdm roof to adhere to new plywood - any problem using this black adhesive?   thank you.**
A: Worked fine for me. Roof was peeling back from wind and this held as a repair; press down epdm after application while it cures. Then covered edge with self leveling white lap sealant.

**Q: what is the difference with this and the 2300?**
A: The 2300 i have used is more runny and sticks to everything to include bronze and stainless.

**Q: Can this product be applied to pond liner to glue onto another piece of liner? Would it be harmful to fish?**
A: That's exactly what I did,  nothing changed with the comets or Shubunkins.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works The First Time
*by A***. on May 25, 2024*

Needed to seal down some architectural shingles that got lifted in an 80 mph wind shear. I was luckier than most, my shingles didn't tear or break. In the past, I had mixed results with cheap asphalt repair products. They all instructed laying a house brick on the repair overnight. I had numerous repairs , so that wasn't an option. Besides, who wants to go back up on a 25 foot roof the next day to see if it worked or carry 30 bricks up there. A friend that works as a roofing contractor recommended this Geocel 4500. He said to wait for a sunny day and just hold the repair down with my hand for about a minute. He laughed about the house brick thing.This stuff is the real deal. I treated it like contact adhesive. Apply it to the surface, press it down, pull it apart slightly, then put your weight on it to seal it down. This stuff sticks! Did all the lifted shingles in about 45 minutes. I wore an old pair of mechanic's gloves and just threw them out when done. It's pretty unforgiving if you get it on you .Had another storm roll through a couple days later and every repair held firm. Only 45 mph wind this time, but they held.I didnt have any problem with hardening in the tube. I must've got a fresh batch. I set it in the sun on an asphalt driveway for a couple of hours before I started. It was nice and pliable on a 75 degree day.This worked as advertised.

### ⭐⭐⭐⭐⭐ Product works great
*by K***Y on June 19, 2025*

Had a leak on my epdm roof and this sealant stopped the leak. Will definitely buy again

### ⭐⭐⭐⭐⭐ Works in wet conditions
*by C***S on June 10, 2025*

Works in wet conditions. Pretty messy stuff but gets the job done.

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-01-28*