--- product_id: 255960398 title: "GC55103 4500 Roof Bonding Sealant, 10.1 Ounce Cartridge, Black" brand: "geocel" price: "VT8737" currency: VUV in_stock: true reviews_count: 5 category: "Geocel" url: https://www.desertcart.vu/products/255960398-gc55103-4500-roof-bonding-sealant-10-1-ounce-cartridge-black store_origin: VU region: Vanuatu --- # 100% waterproof seal UV & temperature resistant 200 PSI tensile strength GC55103 4500 Roof Bonding Sealant, 10.1 Ounce Cartridge, Black **Brand:** geocel **Price:** VT8737 **Availability:** ✅ In Stock ## Summary > 🖤 Seal it like a pro—because your roof deserves the gold standard! ## Quick Answers - **What is this?** GC55103 4500 Roof Bonding Sealant, 10.1 Ounce Cartridge, Black by geocel - **How much does it cost?** VT8737 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/255960398-gc55103-4500-roof-bonding-sealant-10-1-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 - • **Multi-Surface Mastery:** Works on shingles, steel, wood, EPDM, TPO, PVC, Hypalon, and masonry - • **Effortless Application:** Self-leveling, thick formula flows precisely with standard caulking guns - • **Flexible & Durable Seal:** Remains crack-free and flexible through temperature swings and UV exposure - • **Fierce Roof Bonding Power:** Bonds instantly to metal, asphalt, concrete & more for a permanent fix - • **Professional-Grade Reliability:** Trusted by pros and DIYers alike for tough leak repairs ## Overview The GEOCEL GC55103 4500 Roof Bonding Sealant is a 10.1 oz black cartridge delivering a professional-grade, waterproof, and flexible adhesive designed for tough roof repairs. With 200 PSI tensile strength and compatibility across multiple substrates including asphalt shingles, metal, and concrete, it forms a durable, UV-resistant seal that withstands temperature fluctuations. Ideal for eliminating persistent leaks, this sealant offers easy application and long-lasting protection trusted by both professionals and serious DIYers. ## Description GEOCEL GC55103 4500 Roof Bonding Sealant, 10.1 Ounce Cartridge, Black Review: Exellent product for our purpose Review: ⭐️⭐️⭐️⭐️⭐️ The Gold Standard for Roof Repairs—Worth Every Penny! ​I bought the GEOCEL GC55103 4500 Roof Bonding to finally tackle a persistent, slow leak around a chimney flashing that I had failed to fix with three different big-box store sealants. This product is in a league of its own, and the five-star rating is absolutely earned. ​Application: The sealant is thick, but it flows exactly where you need it to go. I applied it easily using a standard caulking gun. The self-leveling property is fantastic; it beautifully filled small voids and gaps around the flashing without me having to tool it much. It adheres immediately to everything—metal, asphalt shingle, and masonry. ​Performance & Cure: I applied this on a cool afternoon, and it skinned over quickly. The truly amazing part is its performance. The leak I've been fighting for months? Completely gone after the first rain. It remains flexible and has handled the recent temperature fluctuations and strong UV exposure with zero sign of cracking, shrinking, or lifting. It truly creates a permanent, watertight membrane. ​Final Verdict: If you are dealing with a tough leak on your roof (especially around vents, skylights, or flashings), stop wasting money on cheap sealants. The GEOCEL 4500 is professional-grade and provides the peace of mind that the job is done right. It bonds fiercely and forms a flexible, durable repair that looks like it will last longer than the roof itself. Highly, highly recommended for serious DIYers and professionals alike! ## Features - Lap adhesive and scrim edge sealant - Remains flexible - Non flammable formulation - For use on asphalt shingles, steel, concrete, EPDM, primed TPO, primed PVC, black Hypalon, metal, wood, and other common building substrates - Can also be used as a night seal and for core/test cuts ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B002ELU1HU | | Brand Name | Geocel | | Color | Black | | Customer Reviews | 4.6 4.6 out of 5 stars (555) | | Global Trade Identification Number | 00079239551034 | | Included Components | Caulk & Sealants, Painting Supplies, tape-caulk | | Item Form | Strip | | Item Type Name | Geocel 55103 "4500 Epdm" Adhesive Sealant 10.1 Oz Cartridge, Black - 2462025 | | Item Weight | 454 g | | Liquid Volume | 10.1 Fluid Ounces | | Manufacturer | No | | Material Type | Adhesive Sealant | | Surface Recommendation | Roof | | Tensile Strength | 200 Pounds Per Square Inch | | UPC | 079239551034 | | Unit Count | 298.69 Milliliters | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** Geocel - **Colour:** Black - **Item form:** Strip - **Item weight:** 454 g - **Liquid volume:** 10.1 Fluid Ounces ## Images ![GC55103 4500 Roof Bonding Sealant, 10.1 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 ### ⭐⭐⭐⭐⭐ Review *by C***N on 13 October 2021* Exellent product for our purpose ### ⭐⭐⭐⭐⭐ Review *by R***I on 20 November 2025* ⭐️⭐️⭐️⭐️⭐️ The Gold Standard for Roof Repairs—Worth Every Penny! ​I bought the GEOCEL GC55103 4500 Roof Bonding to finally tackle a persistent, slow leak around a chimney flashing that I had failed to fix with three different big-box store sealants. This product is in a league of its own, and the five-star rating is absolutely earned. ​Application: The sealant is thick, but it flows exactly where you need it to go. I applied it easily using a standard caulking gun. The self-leveling property is fantastic; it beautifully filled small voids and gaps around the flashing without me having to tool it much. It adheres immediately to everything—metal, asphalt shingle, and masonry. ​Performance & Cure: I applied this on a cool afternoon, and it skinned over quickly. The truly amazing part is its performance. The leak I've been fighting for months? Completely gone after the first rain. It remains flexible and has handled the recent temperature fluctuations and strong UV exposure with zero sign of cracking, shrinking, or lifting. It truly creates a permanent, watertight membrane. ​Final Verdict: If you are dealing with a tough leak on your roof (especially around vents, skylights, or flashings), stop wasting money on cheap sealants. The GEOCEL 4500 is professional-grade and provides the peace of mind that the job is done right. It bonds fiercely and forms a flexible, durable repair that looks like it will last longer than the roof itself. Highly, highly recommended for serious DIYers and professionals alike! ### ⭐⭐⭐⭐⭐ Review *by A***. on 25 May 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. ## Frequently Bought Together - GEOCEL GC55103 4500 Roof Bonding Sealant, 10 Ounce Cartridge, Black - Oatey Oatey-14137 14137 Rain Collar 3"-4" No-Calk Roof Flashing, 1 Count (Pack of 1), Black - Oatey 14136 Rain Collar 1.5"-3" No-Calk Roof Flashing, Black --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/255960398-gc55103-4500-roof-bonding-sealant-10-1-ounce-cartridge-black](https://www.desertcart.vu/products/255960398-gc55103-4500-roof-bonding-sealant-10-1-ounce-cartridge-black) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-06-08*