Bye-bye, Stiffness!
Pre-washing helps dodge the old shrinking canvas surprise. This is particularly relevant if you plan to use the canvas for a project where size stability is crucial. Factors contributing to shrinkage include the type of fabric used, the weave of the canvas, and the temperature and method of washing. By pre-washing the canvas, you can minimize the risk of unexpected shrinkage, ensuring that your project turns out exactly as planned. Additionally, pre-washing can also help remove any sizing or chemicals from the fabric, making it easier to work with and ensuring a better end result.
Removal of Chemical Residue
Canvas often comes with a bit of a “fresh from the factory” cocktail of chemicals. Pre-washing helps to bid adieu to any residue that may interfere with your paints or cause unexpected reactions.
Temperature’s Tightening Effect
When this fabric meets water, it’s not just a wash—it’s a full-on dance of the fibers. As mentioned, cotton fibers absorb water, expand, and then shrink, but it’s not a one-time show. Repeated exposure to water can cause ongoing shrinkage, reshaping your canvas over time.
This is why prewashing or water-treating your canvas fabric is a smart move, especially if you’re using it for items that will face the elements or frequent laundering.