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Geocel

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

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Availability: In Stock.
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Arrives Saturday, Jun 13
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Number of Items: 1


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.

Description

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. The advanced technology of this bond sealant results in a product that quickly withstands ponding water while bonding to many common roofing substrates. This durable sealer is ideal for use on asphalt shingles, steel, concrete, EPDM, primed TPO, primed PVC, Hypalon (black only), metal, wood, and other common building substrates. No additional adhesives or sealants are needed when you use this flexible sealer. 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. 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.

Color: Black


Brand: Geocel


Item Weight: 16 ounces


Liquid Volume: 10.1 Fluid Ounces


Item Form: Liquid


Brand Name: Geocel


Number of Items: 1


Manufacturer: Geocel


UPC: 079239551034


Global Trade Identification Number: 34


Unit Count: 1.0 Count


Model: GC55103


Part Number: GC55103


Item Type Name: GC55103


Included Components: Geocel 4500 Roof Bonding Sealant, Black, 10.3 fl. oz.


Warranty Description: Satisfaction Guaranteed


Surface Recommendation: Roof


Tensile Strength: 200 Pounds Per Square Inch


Water Resistance Level: Waterproof


Color: Black


Item Form: Liquid


Item Weight: 16 ounces


Liquid Volume: 10.1 Fluid Ounces


Material Type: Blend


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jun 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Can't go wrong
Number of Items: 1
Review Image by Ryan J maturi
Review Image by Ryan J maturi
⭐️⭐️⭐️⭐️⭐️ 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! ... show more
Reviewed in the United States on November 20, 2025 by Ryan J maturi
    • Great product for multiple applications
Number of Items: 1
This stuff is amazing. I used it to seal roof nails and the seal the flashing. Dries quickly (can actually be used when it’s raining) and sealed everything up. Then I went camping and my RV had a leak. I remembered I had this in my truck. I put it on the spot I suspected was leaking in the pouring rain. The leak stopped immediately. I’m sold! Best stuff ever. ... show more
Reviewed in the United States on April 20, 2026 by Dylan
    • Works The First Time
Number of Items: 1
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. ... show more
Reviewed in the United States on May 25, 2024 by Art G.
    • Good product
Number of Items: 1
Worked well on blown off roof shingles.
Reviewed in the United States on April 1, 2026 by Rick N. Daniels
    • Very good roofing sealant
Number of Items: 1
It does a great job on flashing and roofing issues. The downside is it is messy and doesn't have a long shelf life, and very short once opened and partially used.
Reviewed in the United States on October 16, 2024 by Amazon Customer
    • This stuff is amazing
Number of Items: 1
This stuff is crazy good. Wear gloves.
Reviewed in the United States on April 15, 2026 by Joe T.
    • Great for sealing small imperfections on a roof
Number of Items: 1
This was used to seal the space around a vent collar on my roof. There was a small leak that would form in windy storms. A small application around the base of the vent collar sealed the leak with no issues. Great inexpensive way to fix small areas on the roof!
Reviewed in the United States on November 21, 2025 by Sunny
    • GEOCEL GC55103 4500 Roof Bonding Sealan
Number of Items: 1
Everything has been working perfectly so far.
Reviewed in the United States on March 6, 2026 by sw

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