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 We also offer a 1 oz version of this product (also epoxy compatible but the product page is out of date) it is ASIN: B01N20MS32.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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🛠️ Elevate your composite game with precision and power!

PRECISION COVERAGE - Generous 3-yard length and 50-inch width for large-scale projects without interruption.
OPTIMAL THICKNESS BUILD - Adds consistent 0.045" thickness per layer, perfect for controlled composite layering.
SUPERIOR MOLD CONFORMITY - Conforms better than woven roving, capturing every mold detail flawlessly.
INDUSTRIAL GRADE STRENGTH - Delivers uniform strength and stiffness in all directions, ensuring durable, long-lasting composites.
VERSATILE RESIN COMPATIBILITY - Seamlessly bonds with epoxy, polyester, or vinyl ester resins for professional-grade finishes.

Griffco's 1.5 oz Fiberglass Chopped Strand Mat offers 3 yards by 50 inches of industrial-grade reinforcement, designed for hand layup, vacuum bagging, and molding with epoxy, polyester, or vinyl ester resins. It builds consistent thickness (~0.045" per layer), provides uniform strength in all directions, and conforms better to mold details than woven roving, making it an essential material for professional composite fabrication.

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Item form	Gel,Powder
Item weight	1.6 kg
Number of Items	1
Grade rating	Industrial
Global Trade Identification Number	00867327000331
Manufacturer	Griffco Products
Part number	CSM450GW1270MM
Item Weight	1.6 Kilograms
Package Dimensions	34.8 x 22.81 x 6.71 cm; 1.6 kg
Item model number	CSM450GW1270MM
Color	White
Finish	Powder
Item Package Quantity	1
Measurement System	Inch
Batteries Included?	No
Batteries Required?	No

Griffco Products 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

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