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 We also offer a 1 oz version of this product (also epoxy compatible but the product page is out of date) it is ASIN: B01N20MS32.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

RESIN COMPATIBILITY - Works seamlessly with epoxy, polyester, and vinyl ester resins for professional-grade finishes
LIGHTWEIGHT STRENGTH - 1.5 oz chopped strand mat ensures easy handling without compromising durability
PRECISION CUT 3 YARDS - Generous 50" width for versatile composite projects
INDUSTRIAL GRADE QUALITY - Manufactured by Heywood, ensuring consistent performance and reliability every time
MULTI METHOD APPLICATION - Perfect for hand layup, vacuum bagging, or molding techniques—adapt to your workflow

This 1.5 oz fiberglass chopped strand mat measures 3 yards by 50 inches, designed for professional composite fabrication. Compatible with epoxy, polyester, and vinyl ester resins, it supports hand layup, vacuum bagging, and molding processes. Lightweight yet durable, it offers reliable reinforcement for high-performance applications.

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Manufacturer	Heywood
Part number	CSM450GW1270MM
Item Weight	1.6 Kilograms
Package Dimensions	34.8 x 22.81 x 6.71 cm; 1.6 kg
Is Discontinued By Manufacturer	No
Color	A67
Item Shape	Rectangular
Batteries Included	No
Batteries Required?	No

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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