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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
Verified Purchase
For the first layer of fiberglass or to smooth out a later layer of fiberglass and keep out air bubbles in the layup, this cloth is great. No matter the texture or shape, this will conform to the shape of the surface and hold everything in place as it cures. Easy to work with, easy to wet with polyester resin, and easy to build up thickness when needed.
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I was very pleased with the fast delivery of the mat roll and well it was packaged.
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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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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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Great product. Fast shipping. Best price.
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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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Verified Purchase
Used in multi lamination in replacing transom
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good quality and decent price.
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Verified Purchase
Exactly what I ordered and on time. Great place to work with. Good advice, great products, what could be better?
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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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