I would definitely wash ALL the fabric before using any of it including the outdoor fabric. I made doggie quilt for a neighbor. Some of the pieces for softness I stitched together like a crazy quilt top. Put it all together and Chico loves his little doggie quilt. Didn't charge her anything for it because I've used her machine a couple times and she had all the material to work with. Just went to her house and did it. I did get 2 plates of chicken enchiladas w/tomatillo sauce, refried beans and rice and some pineapple empanadas to take home. DH said I did good. I was informed Chico drags his quilt with him everywhere.