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Fiberglass Mat, also known as Chopped Strand Mat or CSM for short, is a non-woven material typically used for laminate build-up and repair work. It consists of glass fibers laid randomly across each other and held together by a styrene binder.
Polyester is the preferred resin for wetting out this form of glass fiber material as it readily dissolves the styrene bonding agent.
Offered in various weights per square foot. The lightest version, veil mat, is used commonly as a finishing layer to mask any print-thru in a laminate schedule. This particular veil mat uses longer, thinner fibers than heavier mat weights also offered here. Think angel hair pasta to spaghetti fibers. Coarser, heavier mat is commonly used for bulk, random axis strength buildup and is also an excellent initial layer when bonding repair work.
Reviews for Fiberglass Mat
April 8, 2022
Verified Purchase
I was very pleased with the fast delivery of the mat roll and well it was packaged.
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July 17, 2021
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Not much to say about Fiberglass Mat, it's just what it is however what I can say is...how impressed I am with Total Boats perfect packaging and fast shipping. This is the beginning of a beautiful relationship.
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July 3, 2021
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It was my first job I didn't know what to order perhaps I should have talked to the help desk prior to ordering. I had to layer twice
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June 2, 2021
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Great product. Fast shipping. Best price.
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May 5, 2021
Verified Purchase
This was my first time working with CSM, so hard to compare to other CSM products. It did what I wanted it to do in repairing and reinforcing a hull crack in a small sailboat. I'm not sure how strong the binders in this product are supposed to be, but I found that when I created a tear to shape the piece I needed, the frayed edges unraveled pretty easily, creating a lot of loose fiberglass strands in my workspace. Not the end of the world - just a bit messy. Overall, happy with the performance of this product.
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February 18, 2021
Verified Purchase
Used in multi lamination in replacing transom
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December 15, 2020
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good quality and decent price.
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October 4, 2020
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Exactly what I ordered and on time. Great place to work with. Good advice, great products, what could be better?
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May 15, 2020
Verified Purchase
This is my first time doing any type of fiberglass work on my boat. The CSM fibers end up coagulating together and make a mess. This might be a norm with fiberglass work but that's the only annoyance I found with it.
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May 12, 2020
Verified Purchase
I use fiberglass mat as a middle layer between woven layers to add bulk
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