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🛠️ Fix it once, fix it right — waterproof strength that lasts!
Bondo Fiberglass Cloth (8 sq ft) is a premium woven fiberglass fabric designed to reinforce repairs on metal, wood, and fiberglass surfaces. Waterproof and paintable, it pairs with Bondo Fiberglass Resin to deliver strong, durable fixes for automotive, marine, and household applications. Its thin, flexible weave ensures a smooth finish, curing fully in 2 hours for fast, reliable restoration.

















| ASIN | B002JRGOT8 |
| Best Sellers Rank | #246,568 in Automotive ( See Top 100 in Automotive ) #200 in Body Repair & Restoration Adhesives |
| Brand | bondo |
| Brand Name | bondo |
| Color | Multicoloured |
| Compatible Material | Concrete, Fiberglass, Metal, Wood |
| Customer Reviews | 4.7 out of 5 stars 2,195 Reviews |
| Global Trade Identification Number | 00076308201289 |
| Included Components | 3M 20128 Bondo Fiberglass Cloth - 8 Sq. Ft. |
| Item Resistance | waterproof |
| Manufacturer | 3M |
| Material | Fiberglass |
| Material Type | Fiberglass |
| Model | 20128 |
| Number of Items | 1 |
| Other Special Features of the Product | Strong |
| Part Number | 20128 |
| Recommended Uses For Product | Body |
| Size Name | 8 Square Feet (Case of 6) |
| Special Feature | Strong |
| Surface Recommendation | Metal|Cloth|Wood |
| Tensile Strength | 1 Pounds |
| UPC | 076308201289 |
| Unit Count | 8.0 Feet |
| Warranty Description | ... |
| Water Resistance Level | Waterproof |
W**S
should have done this years ago
I've been struggling with a cracked pool step for a few years. I've used two step epoxy sticks and flextape, and other quick fixes. I finally got fed up when the step developed a new crack. this stuff is awesome. I applied white pigment for epoxy before I added the hardener to the epoxy and stirred well. I added the hardener as stated in the directions. I also used this 3m bondo fiberglass cloth just to give extra trength because the step seems hollow underneath and dips in the middle. worked out great. the directions state it has a 12 minute work time after the hardener is added. poured well and covers easily with a cheap paint brush. it hardened in just an hour. cure time is 2 hours. the key is to stir for several minutes after the hardener is added. don't be lazy in this step. it has to thoroughly be mixed, paying close attention to get the bottom of the container you use to mix it in. if you don't, the stuff on the bottom, after you pour, will be on top after pouring and will be tacky and not cure properly if you don't mix it thoroughly. i am very pleased. it's easy to use. i cut this to size, poured a thin layer of epoxy, then laid the cloth. i poured another thin layer of epoxy over it and brushed the epoxy into the cloth, saturating it and removing air pockets. then i poured the rest of the epoxy to cover the whole project. the step is strong and waterproof now. all cracks have been fixed and reinforced by this cloth and epoxy.
A**L
Worked great with epoxy resin on epoxy tubing
Just what I needed to laminate onto some fiberglass tube that was lightly smaller diameter than I needed. Used it with West System epoxy resin/hardener and rolled it up on a piece of plastic bag taped down to my workbench.
A**R
Good Product
Used this to repair a badly cracked fiberglass panel in my garage door. I can't believe how strong the repair is.
V**N
Strong & Reliable, But Can Be Messy
Strong & Reliable, But Can Be Messy I’ve used Bondo Fiberglass Cloth for various repairs, and overall, it’s a solid product that gets the job done. It provides great reinforcement when paired with Bondo Fiberglass Resin, making it ideal for automotive, boat, and household repairs. Pros: ✅ Durable & Strong – Adds excellent reinforcement to repairs. ✅ Versatile – Works on metal, fiberglass, wood, and more. ✅ Waterproof & Paintable – Holds up well in outdoor conditions. Cons: ❌ Frays Easily – Cutting it can be messy, with loose strands everywhere. ❌ Requires Careful Application – Can be tricky to work with, especially for beginners. Overall, it’s a great fiberglass cloth for structural repairs, but be prepared for some mess when handling it. If you need strong reinforcement, this is a solid choice
N**E
Great purchase, as described! Fast shipping!
Great purchase, as described! Fast shipping!
J**N
Fiberglass wear gloves
Great for the price, product is pretty straightforward.
A**R
Easy to cut and work with.
Pretty easy to cut and work with. It goes quick, recommend getting one more package than you think you need.
A**R
I like it .
Great !
P**O
As described
As described
R**L
It's fiberglass mat
This fiberglass mat works as expected. It's my first time doing any fiberglass work, but I'm learning and improving the more I do it. I am using a double layer of this matting to rebuild the rear fenders on my van and it's doing the job....slowly due to me being a newbie at this stuff. It appears that it's best to use smaller pieces to cover the area and build up several layers over time. I still have to figure out how to bend it around sharp corners but that is probably an issue with any fiberglass mat.
A**A
Lo recomiendo
Muy buena calidad y se puede manipular perfecto para su aplicación.
R**Y
Llegó a tiempo
Llegó a tiempo. Se ve resistente, espero sea útil.
A**R
Très bonne qualité
Vraiment bon et ce travail supert bien
Trustpilot
2 months ago
1 week ago