






🧱 Reinforce your build with the fiber that stops cracks and water in their tracks!
UPTTHOW 19mm Fiberglass Reinforcement is a 1 lb fiber additive designed to enhance cement mortar and concrete by preventing cracks, improving waterproofing, and boosting impact resistance. Ideal for walls, garden floors, and wet environments, it integrates easily with standard mixes for professional-grade durability.



















| ASIN | B099PBY82Y |
| Best Sellers Rank | #51,382 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #8 in Concrete |
| Date First Available | July 16, 2021 |
| Item Form | Fiber |
| Item Weight | 1 pounds |
| Item model number | Fiberglass 19mm-2lb |
| Manufacturer | UPTTHOW |
| Number of Items | 1 |
| Package Dimensions | 11.77 x 6.61 x 2.95 inches |
S**V
Perfect addition to Bondo or fiberglass resin.
Perfect for adding to Bondo for extra strength. As a taxidermist, I add it to Bondo to make thinner ears in the animals that I taxidermy. It does a great job.
S**L
Works well
Works great binding curbing cement.
T**M
It works!
If you want an easy way to make concrete stronger this is what you need!
N**R
Fine quality but be ready to take time to pull apart the strands
The strands are a pain to pull apart enough so you get a decent mix without clumping. Quality seems decent
S**G
Good price
I have not used it yet I am waiting for the weather to warm up, I plan to use it to parge some walls were we poured some concrete last fall.
M**R
Works well.
Easy to blend in to the cement. Just sprinkle it into the dry mix and blend dry first, rather than throwing in a handful or dumping in the whole bag after you add the water. You'll also need to add more water than usual. Concrete seems very hard with the product added.
J**Y
worked well
worked well; not to fluffy, be sure to add a little at a time, or it clumps up will buy again if required
N**R
Don't buy if you are hand-chopping
Could not get fibers un-clumped when hand-chopping into mix. Might be fine in an industrial machine. 3 stars on the off-chance that it works better in a mixer.
B**S
Strands too long, does not mix well with cement
M**G
Absolutely what it says. I ordered what I got. I made a mistake thinking it was 5lb but it was actually 4lb. I am so sorry. The cut is good and the weight is correct. I will be ordering more in the future.
M**E
Tres bon produit
M**K
Quick delivery. Expect it will work perfectly.
Y**N
a bit short, it's fine
Trustpilot
2 weeks ago
2 weeks ago