J-B Weld

FiberWeld Pipe Repair Cast 2x48 Inch High Strength Adhesive Fiberglass Wrap White

$12.50

1258+ bought in the past month

About this item

  • J-B Weld FiberWeld 1” Pipe Repair Cast: A high-strength one-time use fiberglass wrap, impregnated with a specially formulated anti-corrosive resin providing a permanent & protective adhesion to a wide variety of pipes. When activated by water, the product forms a strong, permanent bond that hardens like steel in 15 minutes. All you have to do is wet, apply and let it dry and in 15 minutes it hardens like steel!
  • Cure and Set Time: Once the product is dipped in water for 5-7 seconds, you will have between 5-10 minutes to work with the product and then it will fully cure in 15 minutes!
  • Product Features and Strength: J-B Weld FiberWeld 1” Pipe Repair Cast can withstand household water pressure and has a bend strength of 1800 PSI. Once the product is fully cured, it can be sanded and painted! The kit includes a pair of gloves, an epoxy putty stick and a securing bandage!
  • Great For Repairs On: Copper, Cast Iron, PVC, ABS, Galvanized Steel, Rubber and more!
$12.50

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Product details
BrandJ-B Weld
ColorWhite
MaterialFiberglass, Resin
Number of Items1
Recommended Uses For Productpipe repair

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Customer reviews

4.41,623 ratings
  1. 571%
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  3. 314%
  4. 20%
  5. 10%

Customers say

Customers find the pipe repair tape works well, particularly for hot tub leaks and galvanized pipe repairs, and appreciate its durability, with one customer noting it forms a rock-solid cast.

★★★★★

It does work! But, you have to do it right

LamboomFebruary 2, 2026✓ Verified purchase

You must pay attention to the videos that demonstrate the application... However, they are all poorly done.. often leaving out important parts (It's all in the details) .. The 2-part epoxy must be thoroughly kneaded .. the next step is to add water to the rolled up tape in the sealed bag... it's sealed because it contains quite a bit of slimy yellowish goop (quite runny) which permeates the roll of tape. you agg the water for only a few seconds just to trigger the goo to harden. You have plenty if time to wrap the tape around the pipe/leak as shown.. but because of the slimy goo, the tape can slip... it takes some talent to hold the ta[pe in place as you wrap always smoothing out the wrinkles and bubbles... the tape can easily loosen, unless you are careful at tightening each wrap .. THE TAPE IS NOT STICKY yet... that's why you have to unwind the small black flexible tape (same used for bandages, but black) this tape is sticky, and stretches.. it will secure and compress the yellowish gooey tape that you first wrapped over the epoxy and pipe. Interestingly, that black tape is supposed to be removed after 5 minutes... WHY? nothing is said about that. perhaps, it's because it will help the goo solidify, now that's it's been exposed to water and air? I left it on because I wasn't convinced that the goo had hardened, and didn't want to disturb the the tape it was holding... DUH! There are many variables here... temperature will effect the cure time. Letting the black compression tape stay attached, is like keeping a wood clamp attached.... you just don't want to remove it 'till the goop is hard. Obviously, if you try and remove after the goop is hard.. you might harm the seal.. The product is fine, the instructions are very poor, a lot can go wrong when you don't get important details ... oh, the videos are helpful, but like most YouTube videos, limited Read more

★★★★★

This stuff works!

RenayJanuary 22, 2026✓ Verified purchase

At first it appeared that it didn't stop the leak. Twenty-four hours later...no water leaking from the pipe. It's a bit messy, so you may want to have an extra pair of gloves available, but it's worth the mess. Read more

★★★★★

Worked even better than I had hope of.

Paul WorleyMarch 5, 2026✓ Verified purchase

Solved a rather big hole in pvc that had been punched out by a water freeze this winter. Easy to use and sealed like it was a new pipe 💪 Read more

★★★★☆

Effective temporary pipe repair that’s easy to use

isabellaDecember 20, 2025✓ Verified purchase

I purchased this FiberWeld pipe repair cast to fix a small leak and stabilize a damaged section of pipe. I needed something quick and easy that didn’t require special tools. The instructions were clear, and the application process was straightforward. Once activated and wrapped, the material hardened as expected and formed a strong, secure seal. It adhered well and provided immediate reinforcement to the pipe, which helped stop the leak and prevent further damage. One thing to keep in mind is that this works best as a temporary or emergency repair. It’s very effective for stabilizing the issue, but it’s not a replacement for a full pipe repair or professional fix. Overall, this is a reliable solution to keep on hand for quick fixes or emergencies. It’s easy to use, works as intended, and provides peace of mind until a permanent repair can be made. Read more

★★★★★

J-B Weld FiberWeld 2

SuperDaveMarch 6, 2026✓ Verified purchase

When using this adhesive if your pipe is not in an open and free area this item can be very difficult and messy to use. The pipe I wanted to repair was too close to the wall and I could not rap the adhesive around the pipe and the mess it created was terrible. The cleanup took most of the time and nothing was accomplished. The product will work but in an open space free from walls and other obstacle. Read more

★★★★★

A simple solution to a problem.

M MADSONAugust 10, 2025✓ Verified purchase

I had a small hole in the connector pipe between the inside pipe and the pipe to the hose spigot outside. I discovered it after receiving a 200 water bill. I bought this along with a couple of other things to repair the hole, since I didn't know how they would work. I decided to start with this item and guess what? I didn't need the other things I ordered! This stuff totally fixed my problem, and it wasn't complicated at all. The only mistake I made was I thought the black bandage included was the strip that you submerge to activate. It's not, you want the one in the silver bag. It's not labeled, it just has the cautions on it. Basically, I kneaded the putty and placed it over the hole. Then I activated the fiber tape, be careful, it is messy! I wrapped it around the epoxy putty and then covered it with the black bandage and left it to cure. The only problem I ran into is that you are supposed to leave the bandage on for a few minutes and then remove it. I must have left it to long because it fused to the fiber tape and I couldn't remove it. It cures in about an hour, but I waited 24 before turning on the water. I watered my yard and garden the next day and it held just fine. I saved my cheap landlord a healthy chunk of change on a plumber in about 10 minutes. If you have a small repair like I had, this stuff works wonders. Application was easy but messy due to the fiber tape, but they include gloves. The price point wasn't painful either. Definitely cheaper than a plumber! Read more

★★★☆☆

Different results...

Marc RhodesMarch 12, 2025✓ Verified purchase

I used this for the first time, after using the powerwrap brand for 30 years, and must say it didnt perform like the original. It took much longer to adhere, harden, and dry. The original gets hot, sets up quickly, and sheds water, dries in 20 minutes. This time, it took 30 minutes to set. It wanted to keep unraveling. Then it took an hour to harden. And no heat to signal that it was working. Then it leaked ever so slightly, requiring a 2nd application. The powerwrap, all I ever had to do, instead of dunking it in water, was to wrap a layer, spray it with a spray bottle, then wrap it completely, and spray with water. It gets hot, and solidofies in 10 minutes to a very nice seal. Idk if i got a bad apple, but it just didnt work like the original. Read more

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