How is the weight of 1.5 oz calculated?? "cloth is sold according to its weight per square yard" this is 11.5 oz/sy?!

Yes woven cloth and roving are specified differently. Chopped strand mat is specified in either grams per square meter or ounces per square foot. In the case of this product it would be 450 grams per square meter or 1.5 oz per square foot. We also offer a 1 oz version of this product (also epoxy compatible but the product page is out of date) it is ASIN: B01N20MS32. I hope this answers your question.

can you lay carpet on this? If so what kind of carpet glue should I use on boat carpet? Can this be applied to treated plyboard?ly

This cloth can be applied to wood or metal using fiberglass resin. Carpet can be applied as with any other smooth surface. I don't know of a specific adhesive for marine carpet.

Does this product use a styrene binder? Can I use it with epoxy?

It has a silane binder that is compatible with polyester, epoxy and vinylester resins. It is powder bound so it comes apart a little easier than emulsion bound and wets out easily.

Could you use this to reinforce craft concrete or concrete slabs?

I think you would want loose fibers for that. Most likely in the 1/2" to 1" length.

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1.5 Oz. Fiberglass Chopped Strand Mat - 3 Yards X 50" Wide for Hand Layup, Vacuum Bagging or Molding Composites with Epoxy, Polyester or Vinyl Ester Resins

1.5 Oz. Fiberglass Chopped Strand Mat - 3 Yards X 50" Wide for Hand Layup, Vacuum Bagging or Molding Composites with Epoxy, Polyester or Vinyl Ester Resins

Product ID: 549329167

Details

Material
Fiberglass
Brand
Griffco
Shape
Sheet
Item Thickness
0.05 Inches
Item Form
Roll

📏1.5 oz/sq ft lightweight strength

📐Uniform multidirectional stiffness

🧩3 yards continuous roll for seamless coverage

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VT46855

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Elevate your composite game with flawless strength and fit!

BULK ROLL CONVENIENCE - 50" wide x 3 yards continuous for uninterrupted workflow
SUPERIOR MOLD CONFORMITY - Contours complex mold details better than woven roving
INDUSTRIAL GRADE DURABILITY - Trusted by marine, transportation & construction pros
PRECISION THICKNESS BUILD UP - Add consistent 0.045" layers for perfect mold shaping
VERSATILE RESIN COMPATIBILITY - Works flawlessly with epoxy, polyester & vinyl ester resins

This 1.5 oz fiberglass chopped strand mat from Griffco Products offers a 50" wide by 3-yard continuous roll designed for hand layup, vacuum bagging, and molding with epoxy, polyester, or vinyl ester resins. It delivers uniform strength and stiffness in all directions, conforms better to mold details than woven roving, and builds thickness at a precise 0.045" per layer, making it ideal for industrial applications in marine, transportation, and construction sectors.

Specifications

ASIN	B07GN1BLC4
Brand	Griffco Products
Brand Name	Griffco Products
Country of Origin	USA
Customer Reviews	4.7 out of 5 stars 458 Reviews
Global Trade Identification Number	00867327000331
Grade Rating	Industrial
Item Form	Roll
Item Shape	Sheet
Item Thickness	0.05 Inches
Item Weight	3.52 Pounds
Manufacturer	Griffco Products
Material	Fiberglass
Material Type	Fiberglass
Model Number	CSM450GW1270MM
Number of Items	1
Part Number	CSM450GW1270MM
Shape	Sheet

Reviews

D**R

Great

14.09.2025

H**I

Love it. So affordable! I have bought this 5 times!

18.10.2025

N**E

Great fiberglass

27.07.2023

J**D

Worth every penny

19.04.2022

J**C

(POWDER COATED) Chopped strand matting that u can't get anywhere but here, !Epoxy users rejoice!

22.07.2023

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