First, purchase your epoxy and fibreglass from the same seller, ideally one whose primary reason for being in business is building strip boats and supply boat builders. A seller who sells only epoxy or only fibreglass, and doesn't use them in his traditional business, can't be relied upon to answer your queries. A provider who additionally builds boats professionally is infinitely better equipped to be a reliable supplier of not only product, but info.
The first rule for getting fibreglass chopped strand mat is to insist that it's equipped on a rolled cardboard tube and shipped in a cardboard box. Paying many greenbacks further for such packaging can pay off within the long-term. fibreglass cloth material may be a simple weave, and therefore the strands are quite slippery against each other. it's simply distorted once handled improperly or overly. The strands are commonly at right angles to each other, and should be unbroken that manner. Folding the material for packing and cargo will simply distort it, resulting in pulls, gathers, lumps, and distortions once it's epoxied.