Black Waterproof Sealant Coating
Black Waterproof Sealant Coating
Key Features
- HIGH-ELONGATION FLEXIBLE MEMBRANE: Cures into a seamless rubberized coating with exceptional elasticity that moves with substrate expansion and contraction. Bridges hairline cracks as they develop without compromising the waterproof barrier for flat roofs, metal roofs, and concrete foundations where thermal movement is inevitable
- ALL-WEATHER PROTECTION: Withstands extreme temperatures from -40F to 176F without cracking or peeling. UV-stable formulation resists sun degradation and maintains structural integrity under prolonged outdoor exposure. Excellent adhesion on wood, metal, concrete, asphalt, EPDM, and TPO surfaces
- SIMPLE DIY APPLICATION: Ready-to-use water-based formula with low VOC. Apply by brush, roller, or sprayer directly onto clean, dry surfaces without complex mixing or heating. Self-leveling consistency fills minor surface imperfections and creates uniform coverage. Soap-and-water cleanup
- MAXIMUM COVERAGE & DURABILITY: 1 Gallon covers approximately 15 sq.ft. on flat/low-slope roofs (3-4 coats) or up to 45 sq.ft. on vertical concrete foundations. 1 Quart covers approximately 4 sq.ft. on flat surfaces or 12 sq.ft. vertical. Each applied layer builds thickness for long-lasting protection against standing water
- VERSATILE MULTI-SURFACE SEALER: Stops existing leaks and prevents future water intrusion on flat roofs, low-slope roofs, metal roofs, sheds, basements, concrete walls, gutters, downspouts, planter boxes, birdbaths, fountains, RVs, campers, boat decks, and outdoor storage containers. Seals seams, flashing, vent pipes, and nail heads
- PROFESSIONAL-GRADE RUBBERIZED TECHNOLOGY: Features over 950% elongation capacity that allows the cured coating to accommodate minor substrate movement and temperature-related expansion without tearing or delaminating, providing continuous waterproof protection for years
- EASY PREPARATION AND QUICK DRYING: Apply in multiple thin coats with each coat drying tack-free in approximately 2-4 hours depending on temperature and humidity. Full cure achieves maximum water resistance in 24-48 hours for reliable leak repair and prevention
Specifications
| Brand | CtopoGo |
| Manufacturer | CtopoGo |
| Material | Rubber |
| Product Type | SEALANT |
| Item Highlights | Flexible Rubberized Membrane, Roof, Foundation, Concrete, Gutters, RV, DIY Leak Repair, Water-Based, Multi-Surface Sealer |
| Item Type Keyword | hardware-sealers |
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- 5 stars: 5 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 star: 0 (0%)
[Size: 1Quart]
This worked great to fit my leaking gutter. I had a small crack that developed after a branch fell on my vinyl gutters. That was about 6 inches long. I applied this from the inside of the gutter. So far no weeks and it has rained several times since. It appears to be holding up well.
[Size: 1Quart, Size: 1Quart]
I tried this product for a small leak we had along a chimney/flashing area with the intention to reseal the brick to the flashing. The application was extremely easy, it’s thin enough to brush on without issue and fill holes but thick enough that it doesn’t run like paint. We’ve had one light rain since application and I see no leaks, so it appears to have worked just fine. All in all, it’s easy to work with, does what it says and reasonably priced. Would recommend!
[Size: 1Quart]
My old cutting board was looking pretty parched and gray, so I finally decided to give it some attention before it actually split in half. I usually avoid these projects because the fumes from most finishes are a bit of a headache, but I was pleasantly indifferent to the scent of this stuff. Clark's Wood Finish went on without any fuss or chemical smell. I applied it right at the kitchen table without opening all the windows. It soaked in fast and didn't leave that sticky mess you get with some oils. I was slightly impressed that it cured as fast as it did since it doesn't have those harsh drying chemicals. It's safe for food surfaces, which was the main reason I bought it. The wood looks refreshed and handles water splashes just fine now. The bottle tip is a little narrow so you have to squeeze it a bit hard, but that's a minor annoyance. It is a relief to find something that works this well without needing a bunch of safety gear just to wipe down a counter. It is a solid value since a small amount covers a lot of ground. I would certainly buy this again for my wooden spoon handles or the outdoor chairs.
[Size: 1Quart]
I ordered the CtopoGo rubberized black sealant coating to repair leaks in the gutter over my front door entry. The product consistency was just right, not too stiff but not too watery. After clean the existing broken and cracked patching in my gutter, the CtopoGo sealant initial brushed on smoothly, and glazed over in about 5 minutes, allowing a second coat to be applied to fill a few holes left by bubbles in the first coat. I will be completing the corners on the rest of my gutters during this week, and with the 1 quart container I am sure I will have enough left over for other projects. The only difficulty I had with this product was initially getting the lid off after tearing off the sealing stip around the edge of the lid. I had to use a flat blade screw driver to pry up and lever off moving around the lip under the lid.
[Size: 1Quart, Size: 1Quart]
I like to keep my shed prepped with all sorts of materials. I like that this is a multi surface and flexible sealent. I'm going to use this on my outdoor shed to seal the seams and screws to make sure it's sealed. This sort of product is a good preventative and will help with small existing leaks however the real leak problem would need to be addressed and fixed at some point. I can see this being great for seams on RVs that move around and need flexibility. I no longer have an RV but when I did that was certainly an issue.