The numbering of the weights of canvas is confusing. Are higher numbers heavier weights, or vice versa?
“Number” weaves, the better quality canvases, are made of double ply yarns which use two threads each from opposite sides of the loom. This method yields canvas of superior strength and density, to retain a good stretch and accept priming well. In grading number-weave canvas, the higher the number, the lighter the canvas, so 14 ¾ ounce is called #10, while number 12 is 11 4/10 ounce fabric. Single ply (or “single-fill”) duck uses one yarn thread from either side of the loom. #50 Cotton Duck, at 10 ounces per square yard is specially selected to offer an economical option without sacrificing permanence. Back to Top.