

🛡️ Seal it once, forget leaks forever!
EternaBond EB-RB040-50R Roof Seal is a professional-grade, black sealing tape designed for all roof types and beyond. With over 700% elongation, UV stability, and the ability to bond underwater or in freezing temperatures, it delivers a permanent, flexible, and water-tight seal trusted by experts and homeowners alike.
| ASIN | B002RRKW4I |
| Best Sellers Rank | #161,318 in Automotive ( See Top 100 in Automotive ) #115 in RV Sealants |
| Brand | EternaBond |
| Customer Reviews | 4.6 4.6 out of 5 stars (290) |
| Date First Available | October 5, 2009 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.64 ounces |
| Item model number | EB-RB040-50R |
| Manufacturer | EternaBond |
| Manufacturer Part Number | EB-RB040-50R |
| Model | EB-RB040-50R |
| OEM Part Number | RSB-4-50 |
K**M
Saved the day!
This really saved the day in my fish pond. I have a big oak tree in my back yard and a limb fell into the pond and punctured a hole that you could put your fist through. The pond holds 1450 gallons of water and is 36" deep and only about 8"-12" of water remained. There are Koi in it two feet in length and have been it the pond since 1996. I ordered this through Amazon off this dealer, and added extra cost to ship ASAP. They did just that and arrived when it was supposed to. (THANKS)I followed all the directions to the T and knock on wood it's holding like there was never a hole in it. This is a great product and it will seal against itself as the hole was in a (V) shape and I applied the patch one way and then in the opposite way. P.S. I didn't loose any fish during this four day ordeal as it happened late on Friday tape ordered Saturday, tape arrived Monday, cure time on tape was 24 hours, and started filling it back up on Tuesday.
K**T
Amazing
I purchased this tape for my A-frame bubble windows that were leaking. I have to be honest I didn’t even scrape off the old sealant. I put this on and used a small hand roller. I’ve used my camper for the last two seasons and have not had one leak. I did use adapt caulking around the inside of the windows as well. This tape was very easy to use. I am a single woman and had no problems fixing my window leaks using this tape.
I**0
Super sticky, seals great
Great stuff, kinda hard to use since it's so sticky, hard cut clean.
S**C
We're pretty stupid, but I think this product saved our bacon - err roof.
Why do we have a large flat roof area? I think maybe the builder ran out of money or something and decided a flat roof was the way to go. Unfortunately, we live in the NE and with the heavy snowfall this year, we had over 3.5' of snow over the 1000' flat roof. We were concerned about the weight, so we went out the window and shoveled it off. Small problem, it had built up over 3 months and had a good chunk of ice in the snow. Here's where we are dumb: We used a shovel to break the ice, then scooped it off using a shovel. We punctured the membrane, and it even tore a bit in some parts. I purchased this product because my parents have had a roofer come in to repair their roof every year for the past 3 years and it's about $1k each time. I read lots of pretty good reviews online about this product, and for some reason I've found that RV people are the handiest most informed reviewers. Strange right? I guess they need a lot of maintenance or maybe it's just older people with more experience. That's just speculation. Anyway, I purchased this with a rubber roller, went to the hardware store to by denatured alcohol and got on the roof again. I wiped the area down with warm water then brushed on some denatured alcohol to clean the area further. I wiped that off pretty quickly, then I very lightly sanded the area with a medium high grit sandpaper, just to scratch it up a bit. Then I wiped again with the rag that cleaned the alcohol off and applied the tape. I would recommend the steel roller, as I feel like I wasn't getting the kind of pressure I needed from the rubber roller. I rolled my heart out until I saw a bit of the glue sort of spread out beyond the edge of the tape a bit. Because it was so cold, I used just a few seconds of my heat gun over the area, and rolled a little bit more. So far so good, we've had a couple rain storms and nothing is coming in (not that we had the problem yet, we were trying to be proactive like with the shovel thing). I inspect them pretty frequently and they seem to be holding. I think the true test would be another snow storm, but I'm not going to hope for that. Also, I'm interested to see how it holds up in the heat of summer, the roof is black (as is the tape) and it gets really hot. I still have a ton left, so I may do some of the seams just in case.
K**G
Great product
Buy this stuff for waterproofing! After revealing my rv roof 4 years ago with white eternabond I have become a huge fan. No failures of the adhesive at all baking in the colorado sun. I am so convinced of its durability I sealed the outside seams on my deck membrane with it. Around posts and seams. It adhered well to EPDM and the metal flashing. It even stuck to wet pressure treat (although I don't expect long term adhesion). Great product, worth every penny for ease of use and durabity.
R**.
I must have for RV owners.
Hands down the best roof repair and preventative maintenance you could have in your toolbox.
R**B
Low cost fix
This product works great for patching small holes, or lifting seams, on EPDM membrane roofs. The roof of my facility has had some of the seams start to lift. If I catch them before they go too far this is a great inexpensive way to seal them back up. If the overlap seam does separate more than and 1", Eternabond make a double sided version of this tape to adhere the seam back down before using this product. There is a video on YouTube that explains in greater detail how to best use this product. [...]
C**S
Does things nothing else can.
If you could afford to cover the whole roof with this stuff, you'd never need another roof. Practice cutting a few small pieces, removing the backer film, and handling it, because it is thick and sticky just like you'd think, and you don't want to waste any. This solved a nasty skylight-edge problem for me, and then I found several other perfect applications on rubber roofing materials: rubber shingle edge, sealing laps on flat dormers, and bridging from sheet onto drip edge. Performs as advertised, expensive and worth it.
D**E
Great product but pricy
S**.
I ordered white Eterna Bond several years ago and it was very thick. We used it to seal any seams on the roof of our previous trailer and it was great. I still have some but the trailer we have now has black gutters so I ordered the 4 inch black tape. I'm disappointed with the thickness of this tape compared with the white tape but it remains to be seen if it's as good as the thicker tape. We will find out in the spring I guess. Update--We used some on our trailer roof that had developed some cracks and it seems to have sealed the roof so no water can enter. Happy customer.
D**D
Fonctionne à merveille pour toit de vr indispensable pour éliminer les risques d infiltrations d’eau
G**L
Great product. Purchased previously. As described.
G**S
product is applied and time will tell
Trustpilot
1 month ago
2 months ago