Yes, finished fabric is usually heavier per square metre than greige (raw) fabric. During dyeing and finishing the knit contracts in length and width, the stitches move closer together and the weight per square metre goes up, often by a few percent up to ten percent or more depending on the yarn and the process.
That is why an offer must state clearly that the GSM is the finished value. The GSM on the knitting machine is not the one you will cut. For consumption calculations always use the GSM and width of the delivered fabric, not the figures from the knitting sheet.
gsmgreigefinished
